Browsing Faculty Research by Title
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Liu, W.; Ko, Che Ming; Zhang, B. W. (American Physical Society, 2007)[more][less]
Abstract: Quark and gluon jets traversing through a quark-gluon plasma not only lose their energies but also can undergo flavor conversions. The conversion rates via the elastic q((q) over bar )g -> gq((q) over bar )and the inelastic q (q) over bar gg scatterings are evaluated in the lowest order in QCD. Including both jet energy loss and conversions in the expanding quark-gluon plasma produced in relativistic heavy ion collisions, we have found a net of quark jets to gluon jets. This reduces the difference between the nuclear modification factors for quark and gluon jets in central heavy ion collisions and thus enhances the p/pi(+) and (p) over bar/pi(-) ratios at high transverse momentum. However, a much larger net quark-to-gluon jet conversion rate than the one given by the lowest order QCD is needed to account for the observed similar ratios in central Au+Au and p+p collisions at the same energy. Implications of our results are discussed.
Description: Journals published by the American Physical Society can be found at http://publish.aps.org/
URI: http://dx.doi.org/10.1103/PhysRevC.75.051901 Files in this item: 1
PhysRevC.75.051901.pdf (276.0Kb) -
Adler, S. S.; Afanasiev, S.; Aidala, C.; Ajitanand, N. N.; Akiba, Y.; Al-Jamel, A.; Alexander, J.; Aoki, K.; Aphecetche, L.; Armendariz, R.; Aronson, S. H.; Averbeck, R.; Awes, T. C.; Babintsev, V.; Baldisseri, A.; Barish, K. N.; Barnes, P. D.; Bassalleck, B.; Bathe, S.; Batsouli, S.; Baublis, V.; Bauer, F.; Bazilevsky, A.; Belikov, S.; Bjorndal, M. T.; Boissevain, J. G.; Borel, H.; Brooks, M. L.; Brown, D. S.; Bruner, N.; Bucher, D.; Buesching, H.; Bumazhnov, V.; Bunce, G.; Burward-Hoy, J. M.; Butsyk, S.; Camard, X.; Chand, P.; Chang, W. C.; Chernichenko, S.; Chi, C. Y.; Chiba, J.; Chiu, M.; Choi, I. J.; Choudhury, R. K.; Chujo, T.; Cianciolo, V.; Cobigo, Y.; Cole, B. A.; Comets, M. P.; Constantin, P.; Csanad, M.; Csorgo, T.; Cussonneau, J. P.; d'Enterria, D.; Das, K.; David, G.; Deak, F.; Delagrange, H.; Denisov, A.; Deshpande, A.; Desmond, E. J.; Devismes, A.; Dietzsch, O.; Drachenberg, J. L.; Drapier, O.; Drees, A.; Durum, A.; Dutta, D.; Dzhordzhadze, V.; Efremenko, Y. V.; En'yo, H.; Espagnon, B.; Esumi, S.; Fields, D. E.; Finck, C.; Fleuret, F.; Fokin, S. L.; Fox, B. D.; Fraenkel, Z.; Frantz, J. E.; Franz, A.; Frawley, A. D.; Fukao, Y.; Fung, S. -Y; Gadrat, S.; Germain, M.; Glenn, A.; Gonin, M.; Gosset, J.; Goto, Y.; De Cassagnac, R. Granier; Grau, N.; Greene, S. V.; Perdekamp, M. Grosse; Gustafsson, H. -A; Hachiya, T.; Haggerty, J. S.; Hamagaki, H.; Hansen, A. G.; Hartouni, E. P.; Harvey, M.; Hasuko, K.; Hayano, R.; He, X.; Heffner, M.; Hemmick, T. K.; Heuser, J. M.; Hidas, P.; Hiejima, H.; Hill, J. C.; Hobbs, R.; Holzmann, W.; Homma, K.; Hong, B.; Hoover, A.; Horaguchi, T.; Ichihara, T.; Ikonnikov, V. V.; Imai, K.; Inaba, M.; Inuzuka, M.; Isenhower, D.; Isenhower, L.; Ishihara, M.; Issah, M.; Isupov, A.; Jacak, B. V.; Jia, J.; Jinnouchi, O.; Johnson, B. M.; Johnson, S. C.; Joo, K. S.; Jouan, D.; Kajihara, F.; Kametani, S.; Kamihara, N.; Kaneta, M.; Kang, J. H.; Katou, K.; Kawabata, T.; Kazantsev, A. V.; Kelly, S.; Khachaturov, B.; Khanzadeev, A.; Kikuchi, J.; Kim, D. J.; Kim, E.; Kim, G. -B; Kim, H. J.; Kinney, E.; Kiss, A.; Kistenev, E.; Kiyomichi, A.; Klein-Boesing, C.; Kobayashi, H.; Kochenda, L.; Kochetkov, V.; Kohara, R.; Komkov, B.; Konno, M.; Kotchetkov, D.; Kozlov, A.; Kroon, P. J.; Kuberg, C. H.; Kunde, G. J.; Kurita, K.; Kweon, M. J.; Kwon, Y.; Kyle, G. S.; Lacey, R.; Lajoie, J. G.; Le Bornec, Y.; Lebedev, A.; Leckey, S.; Lee, D. M.; Leitch, M. J.; Leite, M. A. L.; Li, X. H.; Lim, H.; Litvinenko, A.; Liu, M. X.; Maguire, C. F.; Makdisi, Y. I.; Malakhov, A.; Manko, V. I.; Mao, Y.; Martinez, G.; Masui, H.; Matathias, F.; Matsumoto, T.; McCain, M. C.; McGaughey, P. L.; Miake, Y.; Miller, T. E.; Milov, A.; Mioduszewski, Saskia; Mishra, G. C.; Mitchell, J. T.; Mohanty, A. K.; Morrison, D. P.; Moss, J. M.; Mukhopadhyay, D.; Muniruzzaman, M.; Nagamiya, S.; Nagle, J. L.; Nakamura, T.; Newby, J.; Nyanin, A. S.; Nystrand, J.; O'Brien, E.; Ogilvie, C. A.; Ohnishi, H.; Ojha, I. D.; Okada, H.; Okada, K.; Oskarsson, A.; Otterlund, I.; Oyama, K.; Ozawa, K.; Pal, D.; Palounek, A. P. T.; Pantuev, V.; Papavassiliou, V.; Park, J.; Park, W. J.; Pate, S. F.; Pei, H.; Penev, V.; Peng, J. -C; Pereira, H.; Peresedov, V.; Pierson, A.; Pinkenburg, C.; Pisani, R. P.; Purschke, M. L.; Purwar, A. K.; Qualls, J. M.; Rak, J.; Ravinovich, I.; Read, K. F.; Reuter, M.; Reygers, K.; Riabov, V.; Riabov, Y.; Roche, G.; Romana, A.; Rosati, M.; Rosendahl, S. S. E.; Rosnet, P.; Rykov, V. L.; Ryu, S. S.; Saito, N.; Sakaguchi, T.; Sakai, S.; Samsonov, V.; Sanfratello, L.; Santo, R.; Sato, H. D.; Sato, S.; Sawada, S.; Schutz, Y.; Semenov, V.; Seto, R.; Shea, T. K.; Shein, I.; Shibata, T. -A; Shigaki, K.; Shimomura, M.; Sickles, A.; Silva, C. L.; Silvermyr, D.; Sim, K. S.; Soldatov, A.; Soltz, R. A.; Sondheim, W. E.; Sorensen, S. P.; Sourikova, I. V.; Staley, F.; Stankus, P. W.; Stenlund, E.; Stepanov, M.; Ster, A.; Stoll, S. P.; Sugitate, T.; Sullivan, J. P.; Takagi, S.; Takagui, E. M.; Taketani, A.; Tanaka, K. H.; Tanaka, Y.; Tanida, K.; Tannenbaum, M. J.; Taranenko, A.; Tarjan, P.; Thomas, T. L.; Togawa, M.; Tojo, J.; Torii, H.; Towell, R. S.; Tram, V-N; Tserruya, I.; Tsuchimoto, Y.; Tydesjo, H.; Tyurin, N.; Uam, T. J.; Van Hecke, H. W.; Velkovska, J.; Velkovsky, M.; Veszpremi, V.; Vinogradov, A. A.; Volkov, M. A.; Vznuzdaev, E.; Wang, X. R.; Watanabe, Y.; White, S. N.; Willis, N.; Wohn, F. K.; Woody, C. L.; Xie, W.; Yanovich, A.; Yokkaichi, S.; Young, G. R.; Yushmanov, I. E.; Zajc, W. A.; Zhang, C.; Zhou, S.; Zimanyi, J.; Zolin, L.; Zong, X.; PHENIX Collaboration. (American Physical Society, 2006)[more][less]
Description: Journals published by the American Physical Society can be found at http://publish.aps.org/
URI: http://dx.doi.org/10.1103/PhysRevC.73.054903 Files in this item: 0
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Adler, SS; Afanasiev, S.; Aidala, C.; Ajitanand, NN; Akiba, Y.; Al-Jamel, A.; Alexander, J.; Amirikas, R.; Aoki, K.; Aphecetche, L.; Armendariz, R.; Aronson, SH; Averbeck, R.; Awes, TC; Azmoun, R.; Babintsev, V.; Baldisseri, A.; Barish, KN; Barnes, PD; Bassalleck, B.; Bathe, S.; Batsouli, S.; Baublis, V.; Bauer, F.; Bazilevsky, A.; Belikov, S.; Berdnikov, Y.; Bhagavatula, S.; Bjorndal, MT; Boissevain, JG; Borel, H.; Borenstein, S.; Brooks, ML; Brown, DS; Bruner, N.; Bucher, D.; Buesching, H.; Bumazhnov, V.; Bunce, G.; Burward-Hoy, JM; Butsyk, S.; Camard, X.; Chai, JS; Chand, P.; Chang, WC; Chernichenko, S.; Chi, CY; Chiba, J.; Chiu, M.; Choi, IJ; Choi, J.; Choudhury, R. K.; Chujo, T.; Cianciolo, V.; Cobigo, Y.; Cole, BA; Comets, MP; Constantin, P.; Csanad, M.; Csorgo, T.; Cussonneau, JP; d'Enterria, D.; Das, K.; David, G.; Deak, F.; Delagrange, H.; Denisov, A.; Deshpande, A.; Desmond, EJ; Devismes, A.; Dietzsch, O.; Drachenberg, JL; Drapier, O.; Drees, A.; Drees, KA; du Rietz, R.; Durum, A.; Dutta, D.; Dzhordzhadze, V.; Efremenko, YV; Chenawi, KE; Enokizono, A.; En'yo, H.; Espagnon, B.; Esumi, S.; Ewell, L.; Fields, DE; Finck, C.; Fleuret, F.; Fokin, SL; Fox, BD; Fraenkel, Z.; Frantz, JE; Franz, A.; Frawley, AD; Fukao, Y.; Fung, SY; Gadrat, S.; Garpman, S.; Germain, M.; Ghosh, TK; Glenn, A.; Gogiberidze, G.; Gonin, M.; Gosset, J.; Goto, Y.; de Cassagnac, RG; Grau, N.; Greene, SV; Perdekamp, MG; Guryn, W.; Gustafsson, HA; Hachiya, T.; Haggerty, JS; Hamagaki, H.; Hansen, AG; Hartouni, EP; Harvey, M.; Hasuko, K.; Hayano, R.; Hayashi, N.; He, X.; Heffner, M.; Hemmick, TK; Heuser, JM; Hibino, M.; Hidas, P.; Hiejima, H.; Hill, JC; Hobbs, R.; Holzmann, W.; Homma, K.; Hong, B.; Hoover, A.; Horaguchi, T.; Ichihara, T.; Ikonnikov, VV; Imai, K.; Inaba, M.; Inuzuka, M.; Isenhower, D.; Isenhower, L.; Ishihara, M.; Issah, M.; Isupov, A.; Jacak, BV; Jang, WY; Jeong, Y.; Jia, J.; Jinnouchi, O.; Johnson, BM; Johnson, SC; Joo, KS; Jouan, D.; Kajihara, F.; Kametani, S.; Kamihara, N.; Kaneta, M.; Kang, JH; Kapoor, SS; Katou, K.; Kawabata, T.; Kazantsev, A.; Kelly, S.; Khachaturov, B.; Khanzadeev, A.; Kikuchi, J.; Kim, DH; Kim, DJ; Kim, DW; Kim, E.; Kim, GB; Kim, HJ; Kinney, E.; Kinnison, WW; Kiss, A.; Kistenev, E.; Kiyomichi, A.; Kiyoyama, K.; Klein-Boesing, C.; Kobayashi, H.; Kochenda, L.; Kochetkov, V.; Koehler, D.; Kohama, T.; Kohara, R.; Komkov, B.; Konno, M.; Kopytine, M.; Kotchetkov, D.; Kozlov, A.; Kroon, PJ; Kuberg, CH; Kunde, GJ; Kurita, K.; Kuroki, Y.; Kweon, MJ; Kwon, Y.; Kyle, GS; Lacey, R.; Ladygin, V.; Lajoie, JG; Bornec, YL; Lebedev, A.; Leckey, S.; Lee, DM; Lee, S.; Leitch, MJ; Leite, MAL; Li, XH; Lim, H.; Litvinenko, A.; Liu, MX; Liu, Y.; Maguire, CF; Makdisi, YI; Malakhov, A.; Manko, VI; Mao, Y.; Martinez, G.; Marx, MD; Masui, H.; Matathias, F.; Matsumoto, T.; McCain, MC; McGaughey, PL; Melnikov, E.; Messer, F.; Miake, Y.; Milan, J.; Miller, TE; Milov, A.; Mioduszewski, Saskia; Mischke, RE; Mishra, GC; Mitchell, JT; Mohanty, AK; Morrison, DP; Moss, JM; Muhlbacher, F.; Mukhopadhyay, D.; Muniruzzaman, M.; Murata, J.; Nagamiya, S.; Nagle, JL; Nakamura, T.; Nandi, BK; Nara, M.; Newby, J.; Nilsson, P.; Nyanin, AS; Nystrand, J.; O'Brien, E.; Ogilvie, CA; Ohnishi, H.; Ojha, ID; Okada, H.; Okada, K.; Ono, M.; Onuchin, V.; Oskarsson, A.; Otterlund, I.; Oyama, K.; Ozawa, K.; Pal, D.; Palounek, APT; Pantuev, V.; Pantuev, VS; Papavassiliou, V.; Park, J.; Park, WJ; Parmar, A.; Pate, SF; Pei, H.; Peitzmann, T.; Penev, V.; Peng, JC; Pereira, H.; Peresedov, V.; Pierson, A.; Pinkenburg, C.; Pisani, RP; Plasil, F.; Purschke, ML; Purwar, AK; Qualls, J.; Rak, J.; Ravinovich, I.; Read, KF; Reuter, M.; Reygers, K.; Riabov, V.; Riabov, Y.; Roche, G.; Romana, A.; Rosati, M.; Rosendahl, S.; Rosnet, P.; Rykov, VL; Ryu, SS; Sadler, ME; Saito, N.; Sakaguchi, T.; Sakai, M.; Sakai, S.; Samsonov, V.; Sanfratello, L.; Santo, R.; Sato, HD; Sato, S.; Sawada, S.; Schutz, Y.; Semenov, V.; Seto, R.; Shaw, MR; Shea, TK; Shein, I.; Shibata, TA; Shigaki, K.; Shiina, T.; Shimomura, M.; Sickles, A.; Silva, CL; Silvermyr, D.; Sim, KS; Simon-Gillo, J.; Singh, CP; Singh, V.; Sivertz, M.; Soldatov, A.; Soltz, RA; Sondheim, WE; Sorensen, S.; Sorensen, SP; Sourikova, IV; Staley, F.; Stankus, PW; Stenlund, E.; Stepanov, M.; Ster, A.; Stoll, SP; Sugitate, T.; Sullivan, J. P.; Takagi, S.; Takagui, EM; Taketani, A.; Tamai, M.; Tanaka, KH; Tanaka, Y.; Tanida, K.; Tannenbaum, MJ; Taranenko, A.; Tarjan, P.; Tepe, JD; Thomas, TL; Togawa, M.; Tojo, J.; Torii, H.; Towell, RS; Tram, VN; Tserruya, I.; Tsuchimoto, Y.; Tsuruoka, H.; Tuli, SK; Tydesjo, H.; Tyurin, N.; Uam, TJ; Hecke, HW; Velkovska, J.; Velkovsky, M.; Veszpremi, V.; Villatte, L.; Vinogradov, AA; Volkov, MA; Vznuzdaev, E.; Wang, XR; Watanabe, Y.; White, SN; Willis, N.; Wohn, FK; Woody, CL; Xie, W.; Yang, Y.; Yanovich, A.; Yokkaichi, S.; Young, GR; Yushmanov, IE; Zajc, WA; Zhang, C.; Zhou, S.; Zhou, SJ; Zimanyi, J.; Zolin, L.; Zong, X.; PHENIX Collaboration. (American Physical Society, 2005)[more][less]
Description: Journals published by the American Physical Society can be found at http://publish.aps.org/
URI: http://dx.doi.org/10.1103/PhysRevC.71.051902 Files in this item: 0
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Oh, Yongseok; Liu, Wei; Ko, Che Ming. (American Physical Society, 2007)[more][less]
Abstract: We reinvestigate the J/Psi dissociation processes induced by the reactions with nucleons, J/Psi + N -> D-(*) + Lambda(c), in the meson- exchange model. Main constraints used in this work are vector- meson dominance and charm vector-current conservation. We show that the cross section for J/Psi + N -> D + Lambda(c) can be larger than that for J/Psi + N -> Lambda(c) when these constraints are imposed. The dependence of the cross sections on the coupling constants is analyzed in detail, and the comparison with the recent quark-interchange model predictions is also made.
Description: Journals published by the American Physical Society can be found at http://publish.aps.org/
URI: http://dx.doi.org/10.1103/PhysRevC.75.064903 Files in this item: 1
PhysRevC.75.064903.pdf (208.1Kb) -
Song, Taesoo; Ko, Che Ming; Lee, Su Houng; Xu, Jun. (American Physical Society, 2011)[more][less]
Abstract: Using the two-component model for charmonium production, which includes contributions from both initial hard nucleon-nucleon scattering and from regeneration in the quark-gluon plasma, we study the nuclear modification factor R(AA) and elliptic flow upsilon(2) of J/psi in relativistic heavy-ion collisions. For the expansion dynamics of produced hot, dense matter, we introduce a schematic fireball model with its transverse acceleration determined from the pressure gradient inside the fireball and azimuthally anisotropic expansion parametrized to reproduce measured upsilon(2) of light hadrons. We assume that light hadrons freeze out at the temperature of 120 MeV while charmonia freeze out at 160 MeV, similar to the kinetic and chemical freeze-out temperatures in the statistical model, respectively. For the properties of charmonia in the quark-gluon plasma, we use the screening mass between their charm and anticharm quarks and their dissociation cross sections given by the perturbative quantum chromodynamical (pQCD) calculations in the leading order and up to the next-to-leading order, respectively. For the relaxation time of charm and anticharm quarks in the quark-gluon plasma, we also use the one calculated in the leading-order pQCD. Modeling the effect of higher-order corrections in pQCD by introducing multiplicative factors to the dissociation cross sections of charmonia and the elastic scattering cross sections of charm and anticharm quarks, we find that this effect is small for the R(AA) of J/psi as they suppress the number of initially produced J/psi but enhance the number of regenerated ones. The higher-order corrections increase, however, the upsilon(2) of J/psi Our results suggest that the upsilon(2) of J/psi can play an important role in discriminating between J/psi production from initial hard collisions and from regeneration in the quark-gluon plasma.
Description: Journals published by the American Physical Society can be found at http://publish.aps.org/
URI: http://dx.doi.org/10.1103/PhysRevC.83.014914 Files in this item: 1
PhysRevC.83.014914.pdf (894.0Kb) -
Abelev, B. I.; Aggarwal, M. M.; Ahammed, Z.; Anderson, B. D.; Arkhipkin, D.; Averichev, G. S.; Balewski, J.; Barannikova, O.; Barnby, L. S.; Baudot, J.; Baumgart, S.; Beavis, D. R.; Bellwied, R.; Benedosso, F.; Betancourt, M. J.; Betts, R. R.; Bhasin, A.; Bhati, A. K.; Bichsel, H.; Bielcik, J.; Bielcikova, J.; Biritz, B.; Bland, L. C.; Bombara, M.; Bonner, B. E.; Botje, M.; Bouchet, J.; Braidot, E.; Brandin, A. V.; Bruna, E.; Bueltmann, S.; Burton, T. P.; Bystersky, M.; Cai, X. Z.; Caines, H.; Sanchez, M. Calderon de la Barca; Catu, O.; Cebra, D.; Cendejas, R.; Cervantes, M. C.; Chajecki, Z.; Chaloupka, P.; Chattopadhyay, S.; Chen, H. F.; Chen, J. H.; Chen, J. Y.; Cheng, J.; Cherney, M.; Chikanian, A.; Choi, K. E.; Christie, W.; Clarke, R. F.; Codrington, M. J. M.; Corliss, R.; Cormier, T. M.; Cosentino, M. R.; Cramer, J. G.; Crawford, H. J.; Das, D.; Dash, S.; Daugherity, M.; De Silva, L. C.; Dedovich, T. G.; DePhillips, M.; Derevschikov, A. A.; de Souza, R. Derradi; Didenko, L.; Djawotho, P.; Dogra, S. M.; Dong, X.; Drachenberg, J. L.; Draper, J. E.; Dunlop, J. C.; Mazumdar, M. R. Dutta; Edwards, W. R.; Efimov, L. G.; Elhalhuli, E.; Elnimr, M.; Emelianov, V.; Engelage, J.; Eppley, G.; Erazmus, B.; Estienne, M.; Eun, L.; Fachini, P.; Fatemi, R.; Fedorisin, J.; Feng, A.; Filip, P.; Finch, E.; Fine, V.; Fisyak, Y.; Gagliardi, Carl A.; Gaillard, L.; Gangadharan, D. R.; Ganti, M. S.; Garcia-Solis, E. J.; Geromitsos, A.; Geurts, F.; Ghazikhanian, V.; Ghosh, P.; Gorbunov, Y. N.; Gordon, A.; Grebenyuk, O.; Grosnick, D.; Grube, B.; Guertin, S. M.; Guimaraes, K. S. F. F.; Gupta, A.; Gupta, N.; Guryn, W.; Haag, B.; Hallman, T. J.; Hamed, A.; Harris, J. W.; He, W.; Heinz, M.; Heppelmann, S.; Hippolyte, B.; Hirsch, A.; Hjort, E.; Hoffman, A. M.; Hoffmann, G. W.; Hofman, D. J.; Hollis, R. S.; Huang, H. Z.; Humanic, T. J.; Huo, L.; Igo, G.; Iordanova, A.; Jacobs, P.; Jacobs, W. W.; Jakl, P.; Jena, C.; Jin, F.; Jones, C. L.; Jones, P. G.; Joseph, J.; Judd, E. G.; Kabana, S.; Kajimoto, K.; Kang, K.; Kapitan, J.; Keane, D.; Kechechyan, A.; Kettler, D.; Khodyrev, V. Yu; Kikola, D. P.; Kiryluk, J.; Kisiel, A.; Klein, S. R.; Knospe, A. G.; Kocoloski, A.; Koetke, D. D.; Kopytine, M.; Korsch, W.; Kotchenda, L.; Kouchpil, V.; Kravtsov, P.; Kravtsov, V. I.; Krueger, K.; Krus, M.; Kuhn, C.; Kumar, L.; Kurnadi, P.; Lamont, M. A. C.; Landgraf, J. M.; LaPointe, S.; Lauret, J.; Lebedev, A.; Lednicky, R.; Lee, C. -H; Lee, J. H.; Leight, W.; LeVine, M. J.; Li, C.; Li, N.; Li, Y.; Lin, G.; Lindenbaum, S. J.; Lisa, M. A.; Liu, F.; Liu, J.; Liu, L.; Ljubicic, T.; Llope, W. J.; Longacre, R. S.; Love, W. A.; Lu, Y.; Ludlam, T.; Ma, G. L.; Ma, Y. G.; Mahapatra, D. P.; Majka, R.; Mall, O. I.; Mangotra, L. K.; Manweiler, R.; Margetis, S.; Markert, C.; Matis, H. S.; Matulenko, Yu A.; McDonald, D.; McShane, T. S.; Meschanin, A.; Milner, R.; Minaev, N. G.; Mioduszewski, Saskia; Mischke, A.; Mohanty, B.; Morozov, D. A.; Munhoz, M. G.; Nandi, B. K.; Nattrass, C.; Nayak, T. K.; Nelson, J. M.; Netrakanti, P. K.; Ng, M. J.; Nogach, L. V.; Nurushev, S. B.; Odyniec, G.; Ogawa, A.; Okada, H.; Okorokov, V.; Olson, D.; Pachr, M.; Page, B. S.; Pal, S. K.; Pandit, Y.; Panebratsev, Y.; Pawlak, T.; Peitzmann, T.; Perevoztchikov, V.; Perkins, C.; Peryt, W.; Phatak, S. C.; Pile, P.; Planinic, M.; Pluta, J.; Plyku, D.; Poljak, N.; Poskanzer, A. M.; Potukuchi, B. V. K. S.; Prindle, D.; Pruneau, C.; Pruthi, N. K.; Pujahari, P. R.; Putschke, J.; Raniwala, R.; Raniwala, S.; Ray, R. L.; Redwine, R.; Reed, R.; Ridiger, A.; Ritter, H. G.; Roberts, J. B.; Rogachevskiy, O. V.; Romero, J. L.; Rose, A.; Roy, C.; Ruan, L.; Russcher, M. J.; Sahoo, R.; Sakrejda, I.; Sakuma, T.; Salur, S.; Sandweiss, J.; Sarsour, M.; Schambach, J.; Scharenberg, R. P.; Schmitz, N.; Seger, J.; Selyuzhenkov, I.; Seyboth, P.; Shabetai, A.; Shahaliev, E.; Shao, M.; Sharma, M.; Shi, S. S.; Shi, X. -H; Sichtermann, E. P.; Simon, F.; Singaraju, R. N.; Skoby, M. J.; Smirnov, N.; Snellings, R.; Sorensen, P.; Sowinski, J.; Spinka, H. M.; Srivastava, B.; Stadnik, A.; Stanislaus, T. D. S.; Staszak, D.; Strikhanov, M.; Stringfellow, B.; Suaide, A. A. P.; Suarez, M. C.; Subba, N. L.; Sumbera, M.; Sun, X. M.; Sun, Y.; Sun, Z.; Surrow, B.; Symons, T. J. M.; de Toledo, A. Szanto; Takahashi, J.; Tang, A. H.; Tang, Z.; Tarini, L. H.; Tarnowsky, T.; Thein, D.; Thomas, J. H.; Tian, J.; Timmins, A. R.; Timoshenko, S.; Tlusty, D.; Tokarev, M.; Trainor, T. A.; Tram, V. N.; Trattner, A. L.; Trentalange, S.; Tribble, Robert E.; Tsai, O. D.; Ulery, J.; Ullrich, T.; Underwood, D. G.; Van Buren, G.; Van Leeuwen, M.; Molen, A. M. Vander; Vanfossen, J. A., Jr.; Varma, R.; Vasconcelos, G. M. S.; Vasilevski, I. M.; Vasiliev, A. N.; Videbaek, F.; Vigdor, S. E.; Viyogi, Y. P.; Vokal, S.; Voloshin, S. A.; Wada, M.; Walker, M.; Wang, F.; Wang, G.; Wang, J. S.; Wang, Q.; Wang, X.; Wang, X. L.; Wang, Y.; Webb, G.; Webb, J. C.; Westfall, G. D.; Whitten, C., Jr.; Wieman, H.; Wissink, S. W.; Witt, R.; Wu, Y.; Xie, W.; Xu, N.; Xu, Q. H.; Xu, Y.; Xu, Z.; Yang, Y.; Yepes, P.; Yip, K.; Yoo, I. -K; Yue, Q.; Zawisza, M.; Zbroszczyk, H.; Zhan, W.; Zhang, S.; Zhang, W. M.; Zhang, X. P.; Zhang, Y.; Zhang, Z. P.; Zhao, Y.; Zhong, C.; Zhou, J.; Zoulkarneev, R.; Zoulkarneeva, Y.; Zuo, J. X.; STAR Collaboration. (American Physical Society, 2009)[more][less]
Abstract: The STAR Collaboration at the Relativistic Heavy Ion Collider presents measurements of J/psi e(+) e(-) at midrapidity and high transverse momentum (pT > 5 GeV/c) in p + p and central Cu + Cu collisions at root s(NN) = 200 GeV. The inclusive J/psi production cross section for Cu + Cu collisions is found to be consistent at high p(T) with the binary collision-scaled cross section for p + p collisions. At a confidence level of 97%, this is in contrast to a suppression of J/psi production observed at lower p(T). Azimuthal correlations of J/psi with charged hadrons in p + p collisions provide an estimate of the contribution of B-hadron decays to J/psi production of 13% +/- 5%.
Description: Journals published by the American Physical Society can be found at http://publish.aps.org/
URI: http://dx.doi.org/10.1103/PhysRevC.80.041902 Files in this item: 1
PhysRevC.80.041902.pdf (379.9Kb) -
Adler, SS; Afanasiev, S.; Aidala, C.; Ajitanand, NN; Akiba, Y.; Alexander, J.; Amirikas, R.; Aphecetche, L.; Aronson, SH; Averbeck, R.; Awes, TC; Azmoun, R.; Babintsev, V.; Baldisseri, A.; Barish, KN; Barnes, PD; Bassalleck, B.; Bathe, S.; Batsouli, S.; Baublis, V.; Bazilevsky, A.; Belikov, S.; Berdnikov, Y.; Bhagavatula, S.; Boissevain, JG; Borel, H.; Borenstein, S.; Brooks, ML; Brown, DS; Bruner, N.; Bucher, D.; Buesching, H.; Bumazhnov, V.; Bunce, G.; Burward-Hoy, JM; Butsyk, S.; Camard, X.; Chai, JS; Chand, P.; Chang, WC; Chernichenko, S.; Chi, CY; Chiba, J.; Chiu, M.; Choi, IJ; Choi, J.; Choudhury, R. K.; Chujo, T.; Cianciolo, V.; Cobigo, Y.; Cole, BA; Constantin, P.; d'Enterria, DG; David, G.; Delagrange, H.; Denisov, A.; Deshpande, A.; Desmond, EJ; Dietzsch, O.; Drapier, O.; Drees, A.; du Rietz, R.; Durum, A.; Dutta, D.; Efremenko, YV; El Chenawi, K.; Enokizono, A.; En'yo, H.; Esumi, S.; Ewell, L.; Fields, DE; Fleuret, F.; Fokin, SL; Fox, BD; Fraenkel, Z.; Frantz, JE; Franz, A.; Frawley, AD; Fung, SY; Garpman, S.; Ghosh, TK; Glenn, A.; Gogiberidze, G.; Gonin, M.; Gosset, J.; Goto, Y.; de Cassagnac, RG; Grau, N.; Greene, SV; Perdekamp, MG; Guryn, W.; Gustafsson, HA; Hachiya, T.; Haggerty, JS; Hamagaki, H.; Hansen, AG; Hartouni, EP; Harvey, M.; Hayano, R.; He, X.; Heffner, M.; Hemmick, TK; Heuser, JM; Hibino, M.; Hill, JC; Holzmann, W.; Homma, K.; Hong, B.; Hoover, A.; Ichihara, T.; Ikonnikov, VV; Imai, K.; Isenhower, LD; Ishihara, M.; Issah, M.; Isupov, A.; Jacak, BV; Jang, WY; Jeong, Y.; Jia, J.; Jinnouchi, O.; Johnson, BM; Johnson, SC; Joo, KS; Jouan, D.; Kametani, S.; Kamihara, N.; Kang, JH; Kapoor, SS; Katou, K.; Kelly, S.; Khachaturov, B.; Khanzadeev, A.; Kikuchi, J.; Kim, DH; Kim, DJ; Kim, DW; Kim, E.; Kim, GB; Kim, HJ; Kistenev, E.; Kiyomichi, A.; Kiyoyama, K.; Klein-Boesing, C.; Kobayashi, H.; Kochenda, L.; Kochetkov, V.; Koehler, D.; Kohama, T.; Kopytine, M.; Kotchetkov, D.; Kozlov, A.; Kroon, PJ; Kuberg, CH; Kurita, K.; Kuroki, Y.; Kweon, MJ; Kwon, Y.; Kyle, GS; Lacey, R.; Ladygin, V.; Lajoie, JG; Lebedev, A.; Leckey, S.; Lee, DM; Lee, S.; Leitch, MJ; Li, XH; Lim, H.; Litvinenko, A.; Liu, MX; Liu, Y.; Maguire, CF; Makdisi, YI; Malakhov, A.; Manko, VI; Mao, Y.; Martinez, G.; Marx, MD; Masui, H.; Matathias, F.; Matsumoto, T.; McGaughey, PL; Melnikov, E.; Messer, F.; Miake, Y.; Milan, J.; Miller, TE; Milov, A.; Mioduszewski, Saskia; Mischke, RE; Mishra, GC; Mitchell, JT; Mohanty, AK; Morrison, DP; Moss, JM; Muhlbacher, F.; Mukhopadhyay, D.; Muniruzzaman, M.; Murata, J.; Nagamiya, S.; Nagle, JL; Nakamura, T.; Nandi, BK; Nara, M.; Newby, J.; Nilsson, P.; Nyanin, AS; Nystrand, J.; O'Brien, E.; Ogilvie, CA; Ohnishi, H.; Ojha, ID; Okada, K.; Ono, M.; Onuchin, V.; Oskarsson, A.; Otterlund, I.; Oyama, K.; Ozawa, K.; Pal, D.; Palounek, APT; Pantuev, VS; Papavassiliou, V.; Park, J.; Parmar, A.; Pate, SF; Peitzmann, T.; Peng, JC; Peresedov, V.; Pinkenburg, C.; Pisani, RP; Plasil, F.; Purschke, ML; Purwar, A.; Rak, J.; Ravinovich, I.; Read, KF; Reuter, M.; Reygers, K.; Riabov, V.; Riabov, Y.; Roche, G.; Romana, A.; Rosati, M.; Rosnet, P.; Ryu, SS; Sadler, ME; Saito, N.; Sakaguchi, T.; Sakai, M.; Sakai, S.; Samsonov, V.; Sanfratello, L.; Santo, R.; Sato, HD; Sato, S.; Sawada, S.; Schutz, Y.; Semenov, V.; Seto, R.; Shaw, MR; Shea, TK; Shibata, TA; Shigaki, K.; Shiina, T.; Silva, CL; Silvermyr, D.; Sim, KS; Singh, CP; Singh, V.; Sivertz, M.; Soldatov, A.; Soltz, RA; Sondheim, WE; Sorensen, SP; Sourikova, IV; Staley, F.; Stankus, PW; Stenlund, E.; Stepanov, M.; Ster, A.; Stoll, SP; Sugitate, T.; Sullivan, J. P.; Takagui, EM; Taketani, A.; Tamai, M.; Tanaka, KH; Tanaka, Y.; Tanida, K.; Tannenbaum, MJ; Tarjan, P.; Tepe, JD; Thomas, TL; Tojo, J.; Torii, H.; Towell, RS; Tserruya, I.; Tsuruoka, H.; Tuli, SK; Tydesjo, H.; Tyurin, N.; van Hecke, HW; Velkovska, J.; Velkovsky, M.; Villatte, L.; Vinogradov, AA; Volkov, MA; Vznuzdaev, E.; Wang, XR; Watanabe, Y.; White, SN; Wohn, FK; Woody, CL; Xie, W.; Yang, Y.; Yanovich, A.; Yokkaichi, S.; Young, GR; Yushmanov, IE; Zajc, WA; Zhang, C.; Zhou, S.; Zhou, SJ; Zolin, L.; PHENIX Collaboration. (American Physical Society, 2004)[more][less]
Description: Journals published by the American Physical Society can be found at http://publish.aps.org/
URI: http://dx.doi.org/10.1103/PhysRevC.69.014901 Files in this item: 0
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Zhang, B.; Ko, Che Ming; Li, Ba; Lin, ZW; Pal, S. (American Physical Society, 2002)[more][less]
Abstract: Using a multiphase transport model, we study J/psi production from interactions between charm and anticharm quarks in the initial parton phase and between D and (D) over bar mesons in the final hadron phase of relativistic heavy ion collisions at the relativistic heavy ion collider. Including also the inverse reactions of J/psi absorption by gluons and light mesons, we find that the net number of J/psi from the parton and hadron phases is smaller than that expected from the superposition of initial nucleon-nucleon collisions, contrary to the J/psi enhancement predicted by the kinetic formation model. The production of J/psi is further suppressed if one includes the color screening effect in the parton phase. We have also studied the dependence of J/psi production on the charm quark mass and the effective charm meson mass.
Description: Journals published by the American Physical Society can be found at http://publish.aps.org/
URI: http://dx.doi.org/10.1103/PhysRevC.65.054909 Files in this item: 1
PhysRevC.65.054909.pdf (114.3Kb) -
Zhang, B.; Ko, Che Ming; Li, Ba; Lin, ZW; Sa, BW. (American Physical Society, 2000)[more][less]
Abstract: Using a multiphase transport model, we study the relative importance of J/psi suppression mechanisms due to plasma screening, gluon scattering, and hadron absorption in heavy ion collisions at the Relativistic Heavy Ion Collider. We find that for collisions between heavy nuclei such as Au+Au, both plasma screening and gluon scattering are important. As a result, the effect due to absorption by hadrons becomes relatively minor. The final J/psi survival probability in these collisions is only a few percent. In the case of collisions between light nuclei such as S+S, the effect of plasma screening is, however, negligible in spite of the initial high parton density. The final J/psi survival probability thus remains appreciable after comparable absorption effects due to gluons and hadrons.
Description: Journals published by the American Physical Society can be found at http://publish.aps.org/
URI: http://dx.doi.org/10.1103/PhysRevC.62.054905 Files in this item: 1
PhysRevC.62.054905.pdf (105.1Kb) -
Adler, C.; Ahammed, Z.; Allgower, C.; Amonett, J.; Anderson, BD; Anderson, M.; Averichev, GS; Balewski, J.; Barannikova, O.; Barnby, LS; Baudot, J.; Bekele, S.; Belaga, VV; Bellwied, R.; Berger, J.; Bichsel, H.; Billmeier, A.; Bland, LC; Blyth, CO; Bonner, BE; Boucham, A.; Brandin, A.; Bravar, A.; Cadman, RV; Caines, H.; Sanchez, MCD; Cardenas, A.; Carroll, J.; Castillo, J.; Castro, M.; Cebra, D.; Chaloupka, P.; Chattopadhyay, S.; Chen, Y.; Chernenko, SP; Cherney, M.; Chikanian, A.; Choi, B.; Christie, W.; Coffin, JP; Cormier, TM; Cramer, JG; Crawford, HJ; Derevschikov, AA; Didenko, L.; Dietel, T.; Draper, JE; Dunin, VB; Dunlop, JC; Eckardt, V.; Efimov, LG; Emelianov, V.; Engelage, J.; Eppley, G.; Erazmus, B.; Fachini, P.; Faine, V.; Faivre, J.; Fatemi, R.; Filimonov, K.; Finch, E.; Fisyak, Y.; Flierl, D.; Foley, KJ; Fu, J.; Gagliardi, Carl A.; Gagunashvili, N.; Gans, J.; Gaudichet, L.; Germain, M.; Geurts, F.; Ghazikhanian, V.; Grachov, O.; Grigoriev, V.; Guedon, M.; Gushin, E.; Hallman, TJ; Hardtke, D.; Harris, JW; Henry, TW; Heppelmann, S.; Herston, T.; Hippolyte, B.; Hirsch, A.; Hjort, E.; Hoffmann, GW; Horsley, M.; Huang, HZ; Humanic, TJ; Igo, G.; Ishihara, A.; Ivanshin, YI; Jacobs, P.; Jacobs, WW; Janik, M.; Johnson, I.; Jones, PG; Judd, EG; Kaneta, M.; Kaplan, M.; Keane, D.; Kiryluk, J.; Kisiel, A.; Klay, J.; Klein, SR; Klyachko, A.; Kollegger, T.; Konstantinov, AS; Kopytine, M.; Kotchenda, L.; Kovalenko, AD; Kramer, M.; Kravtsov, P.; Krueger, K.; Kuhn, C.; Kulikov, AI; Kunde, GJ; Kunz, CL; Kutuev, RK; Kuznetsov, AA; Lakehal-Ayat, L.; Lamont, MAC; Landgraf, JM; Lange, S.; Lansdell, CP; Lasiuk, B.; Laue, F.; Lauret, J.; Lebedev, A.; Lednicky, R.; Leontiev, VM; LeVine, MJ; Li, Q.; Lindenbaum, SJ; Lisa, MA; Liu, F.; Liu, L.; Liu, Z.; Liu, QJ; Ljubicic, T.; Llope, WJ; LoCurto, G.; Long, H.; Longacre, RS; Lopez-Noriega, M.; Love, WA; Ludlam, T.; Lynn, D.; Ma, J.; Majka, R.; Margetis, S.; Markert, C.; Martin, L.; Marx, J.; Matis, HS; Matulenko, YA; McShane, TS; Meissner, F.; Melnick, Y.; Meschanin, A.; Messer, M.; Miller, ML; Milosevich, Z.; Minaev, NG; Mitchell, J.; Moore, CF; Morozov, V.; de Moura, MM; Munhoz, MG; Nelson, JM; Nevski, P.; Nikitin, VA; Nogach, LV; Norman, B.; Nurushev, SB; Odyniec, G.; Ogawa, A.; Okorokov, V.; Oldenburg, M.; Olson, D.; Paic, G.; Pandey, SU; Panebratsev, Y.; Panitkin, SY; Pavlinov, AI; Pawlak, T.; Perevoztchikov, V.; Peryt, W.; Petrov, VA; Planinic, M.; Pluta, J.; Porile, N.; Porter, J.; Poskanzer, AM; Potrebenikova, E.; Prindle, D.; Pruneau, C.; Putschke, J.; Rai, G.; Rakness, G.; Ravel, O.; Ray, RL; Razin, SV; Reichhold, D.; Reid, JG; Renault, G.; Retiere, F.; Ridiger, A.; Ritter, HG; Roberts, JB; Rogachevski, OV; Romero, JL; Rose, A.; Roy, C.; Rykov, V.; Sakrejda, I.; Salur, S.; Sandweiss, J.; Savin, I.; Schambach, J.; Scharenberg, RP; Schmitz, N.; Schroeder, LS; Schuttauf, A.; Schweda, K.; Seger, J.; Seliverstov, D.; Seyboth, P.; Shahaliev, E.; Shestermanov, KE; Shimanskii, SS; Skoro, G.; Smirnov, N.; Snellings, R.; Sorensen, P.; Sowinski, J.; Spinka, H. M.; Srivastava, B.; Stephenson, EJ; Stock, R.; Stolpovsky, A.; Strikhanov, M.; Stringfellow, B.; Struck, C.; Suaide, AAP; Sugarbaker, E.; Suire, C.; Sumbera, M.; Surrow, B.; Symons, TJM; de Toledo, AS; Szarwas, P.; Tai, A.; Takahashi, J.; Tang, AH; Thein, D.; Thomas, JH; Thompson, M.; Tikhomirov, V.; Tokarev, M.; Tonjes, MB; Trainor, TA; Trentalange, S.; Tribble, Robert E.; Trofimov, V.; Tsai, O.; Ullrich, T.; Underwood, DG; Van Buren, G.; VanderMolen, AM; Vasilevski, IM; Vasiliev, AN; Vigdor, SE; Voloshin, SA; Wang, F.; Ward, H.; Watson, JW; Wells, R.; Westfall, GD; Whitten, C.; Wieman, H.; Willson, R.; Wissink, SW; Witt, R.; Wood, J.; Xu, N.; Xu, Z.; Yakutin, AE; Yamamoto, E.; Yang, J.; Yepes, P.; Yurevich, VI; Zanevski, YV; Zborovsky, I.; Zhang, H.; Zhang, WM; Zoulkarneev, R.; Zubarev, AN; STAR Collaboration. (American Physical Society, 2002)[more][less]
Abstract: We report the first observation of K-*(892)(0)-->piK in relativistic heavy ion collisions. The transverse momentum spectrum of (K-*0+(K) over bar (*0))/2 from central Au+Au collisions at roots(NN)=130 GeV is presented. The ratios of the K-*0 yield derived from these data to the yields of negative hadrons, charged kaons, and phi mesons have been measured in central and minimum bias collisions and compared with model predictions and comparable e(+)e(-), pp, and (p) over barp results. The data indicate no dramatic reduction of K-*0 production in relativistic heavy ion collisions despite expected losses due to rescattering effects.
Description: Journals published by the American Physical Society can be found at http://publish.aps.org/
URI: http://dx.doi.org/10.1103/PhysRevC.66.061901 Files in this item: 1
PhysRevC.66.061901.pdf (73.87Kb) -
Adams, J.; Aggarwal, MM; Ahammed, Z.; Amonett, J.; Anderson, BD; Arkhipkin, D.; Averichev, GS; Badyal, SK; Bai, Y.; Balewski, J.; Barannikova, O.; Barnby, LS; Baudot, J.; Bekele, S.; Belaga, VV; Bellwied, R.; Berger, J.; Bezverkhny, BI; Bharadwaj, S.; Bhasin, A.; Bhati, AK; Bhatia, VS; Bichsel, H.; Billmeier, A.; Bland, LC; Blyth, CO; Bonner, BE; Botje, M.; Boucham, A.; Brandin, AV; Bravar, A.; Bystersky, M.; Cadman, RV; Cai, XZ; Caines, H.; Sanchez, MCDL; Castillo, J.; Cebra, D.; Chajecki, Z.; Chaloupka, P.; Chattopadhyay, S.; Chen, HF; Chen, Y.; Cheng, J.; Cherney, M.; Chikanian, A.; Christie, W.; Coffin, JP; Cormier, TM; Cramer, JG; Crawford, HJ; Das, D.; Das, S.; de Moura, MM; Derevschikov, AA; Didenko, L.; Dietel, T.; Dogra, SM; Dong, WJ; Dong, X.; Draper, JE; Du, F.; Dubey, AK; Dunin, VB; Dunlop, JC; Mazumdar, MRD; Eckardt, V.; Edwards, WR; Efimov, LG; Emelianov, V.; Engelage, J.; Eppley, G.; Erazmus, B.; Estienne, M.; Fachini, P.; Faivre, J.; Fatemi, R.; Fedorisin, J.; Filimonov, K.; Filip, P.; Finch, E.; Fine, V.; Fisyak, Y.; Fomenko, K.; Fu, J.; Gagliardi, Carl A.; Gaillard, L.; Gans, J.; Ganti, MS; Gaudichet, L.; Geurts, F.; Ghazikhanian, V.; Ghosh, P.; Gonzalez, JE; Grachov, O.; Grebenyuk, O.; Grosnick, D.; Guertin, SM; Guo, Y.; Gupta, A.; Gutierrez, TD; Hallman, TJ; Hamed, A.; Hardtke, D.; Harris, JW; Heinz, M.; Henry, TW; Hepplemann, S.; Hippolyte, B.; Hirsch, A.; Hjort, E.; Hoffmann, GW; Huang, HZ; Huang, SL; Hughes, EW; Humanic, TJ; Igo, G.; Ishihara, A.; Jacobs, P.; Jacobs, WW; Janik, M.; Jiang, H.; Jones, PG; Judd, EG; Kabana, S.; Kang, K.; Kaplan, M.; Keane, D.; Khodyrev, VY; Kiryluk, J.; Kisiel, A.; Kislov, EM; Klay, J.; Klein, SR; Koetke, DD; Kollegger, T.; Kopytine, M.; Kotchenda, L.; Kramer, M.; Kravtsov, P.; Kravtsov, VI; Krueger, K.; Kuhn, C.; Kulikov, AI; Kumar, A.; Kutuev, RK; Kuznetsov, AA; Lamont, MAC; Landgraf, JM; Lange, S.; Laue, F.; Lauret, J.; Lebedev, A.; Lednicky, R.; Lehocka, S.; LeVine, MJ; Li, C.; Li, Q.; Li, Y.; Lin, G.; Lindenbaum, SJ; Lisa, MA; Liu, F.; Liu, L.; Liu, QJ; Liu, Z.; Ljubicic, T.; Llope, WJ; Long, H.; Longacre, RS; Lopez-Noriega, M.; Love, WA; Lu, Y.; Ludlam, T.; Lynn, D.; Ma, GL; Ma, JG; Ma, YG; Magestro, D.; Mahajan, S.; Mahapatra, DP; Majka, R.; Mangotra, LK; Manweiler, R.; Margetis, S.; Markert, C.; Martin, L.; Marx, JN; Matis, HS; Matulenko, YA; McClain, CJ; McShane, TS; Meissner, F.; Melnick, Y.; Meschanin, A.; Miller, ML; Minaev, NG; Mironov, C.; Mischke, A.; Mishra, DK; Mitchell, J.; Mohanty, B.; Molnar, L.; Moore, CF; Morozov, DA; Munhoz, MG; Nandi, BK; Nayak, SK; Nayak, TK; Nelson, JM; Netrakanti, PK; Nikitin, VA; Nogach, LV; Nurushev, SB; Odyniec, G.; Ogawa, A.; Okorokov, V.; Oldenburg, M.; Olson, D.; Pal, SK; Panebratsev, Y.; Panitkin, SY; Pavlinov, AI; Pawlak, T.; Peitzmann, T.; Perevoztchikov, V.; Perkins, C.; Peryt, W.; Petrov, VA; Phatak, SC; Picha, R.; Planinic, M.; Pluta, J.; Porile, N.; Porter, J.; Poskanzer, AM; Potekhin, M.; Potrebenikova, E.; Potukuchi, BVKS; Prindle, D.; Pruneau, C.; Putschke, J.; Rakness, G.; Raniwala, R.; Raniwala, S.; Ravel, O.; Ray, RL; Razin, SV; Reichhold, D.; Reid, JG; Renault, G.; Retiere, F.; Ridiger, A.; Ritter, HG; Roberts, JB; Rogachevskiy, OV; Romero, JL; Rose, A.; Roy, C.; Ruan, L.; Sahoo, R.; Sakrejda, I.; Salur, S.; Sandweiss, J.; Sarsour, M.; Savin, I.; Sazhin, PS; Schambach, J.; Scharenberg, RP; Schmitz, N.; Schweda, K.; Seger, J.; Seyboth, P.; Shahaliev, E.; Shao, M.; Shao, W.; Sharma, M.; Shen, WQ; Shestermanov, KE; Shimanskiy, SS; Sichtermann, E.; Simon, F.; Singaraju, RN; Skoro, G.; Smirnov, N.; Snellings, R.; Sood, G.; Sorensen, P.; Sowinski, J.; Speltz, J.; Spinka, H. M.; Srivastava, B.; Stadnik, A.; Stanislaus, TDS; Stock, R.; Stolpovsky, A.; Strikhanov, M.; Stringfellow, B.; Suaide, AAP; Sugarbaker, E.; Suire, C.; Sumbera, M.; Surrow, B.; Symons, TJM; Toledo, AS; Szarwas, P.; Tai, A.; Takahashi, J.; Tang, AH; Tarnowsky, T.; Thein, D.; Thomas, JH; Timoshenko, S.; Tokarev, M.; Trainor, TA; Trentalange, S.; Tribble, Robert E.; Tsai, OD; Ulery, J.; Ullrich, T.; Underwood, DG; Urkinbaev, A.; Van Buren, G.; Van Leeuwen, M.; Vander Molen, AM; Varma, R.; Vasilevski, IM; Vasiliev, AN; Vernet, R.; Vigdor, SE; Viyogi, YP; Vokal, S.; Voloshin, SA; Vznuzdaev, M.; Waggoner, WT; Wang, F.; Wang, G.; Wang, G.; Wang, XL; Wang, Y.; Wang, Y.; Wang, ZM; Ward, H.; Watson, JW; Webb, JC; Wells, R.; Westfall, GD; Wetzler, A.; Whitten, C.; Wieman, H.; Wissink, SW; Witt, R.; Wood, J.; Wu, J.; Xu, N.; Xu, Z.; Xu, ZZ; Yamamoto, E.; Yepes, P.; Yurevich, VI; Zanevsky, YV; Zhang, H.; Zhang, WM; Zhang, ZP; Zoulkarneev, R.; Zoulkarneeva, Y.; Zubarev, AN. (American Physical Society, 2005)[more][less]
Abstract: The short-lived K(892)* resonance provides an efficient tool to probe properties of the hot and dense medium produced in relativistic heavy-ion collisions. We report measurements of K* in root s(NN)=200 GeV Au+Au and p+p collisions reconstructed via its hadronic decay channels K(892)*(0)-> K pi and K(892)*(+/-)-> K(S)(0)pi(+/-) using the STAR detector at the Relativistic Heavy Ion Collider at Brookhaven National Laboratory. The K*(0) mass has been studied as a function of p(T) in minimum bias p+p and central Au+Au collisions. The K(*) p(T) spectra for minimum bias p+p interactions and for Au+Au collisions in different centralities are presented. The K*/K yield ratios for all centralities in Au+Au collisions are found to be significantly lower than the ratio in minimum bias p+p collisions, indicating the importance of hadronic interactions between chemical and kinetic freeze-outs. A significant nonzero K*(0) elliptic flow (v(2)) is observed in Au+Au collisions and is compared to the K(S)(0) and Lambda v(2). The nuclear modification factor of K* at intermediate p(T) is similar to that of K(S)(0) but different from Lambda. This establishes a baryon-meson effect over a mass effect in the particle production at intermediate p(T) (2 < p(T)<= 4 GeV/c).
Description: Journals published by the American Physical Society can be found at http://publish.aps.org/
URI: http://dx.doi.org/10.1103/PhysRevC.71.064902 Files in this item: 1
PhysRevC.71.064902.pdf (396.5Kb) -
Li, Ba; Zhang, B.; Sustich, AT; Ko, Che Ming. (American Physical Society, 1999)[more][less]
Abstract: Using a relativistic transport model, we study the azimuthal momentum asymmetry of kaons with fixed transverse momentum, i.e., the differential flow, in heavy-ion collisions at beam momentum of 6 GeV/c per nucleon, available from the Alternating Gradient Synchrotron (AGS) at the Brookhaven National Laboratory (BNL). We find that in the absence of kaon potential the kaon differential flow is positive and increases with transverse momentum as that of nucleons. The repulsive kaon potential as predicted by theoretical models, however, reduces the kaon differential flow, changing it to negative for kaons with low transverse momenta. Cancellation between the negative differential flow at low momenta and the positive one at high momenta is then responsible for the experimentally observed nearly vanishing in-plane transverse flow of kaons in heavy-ion experiments. [S0556-2813(99)02109-3].
Description: Journals published by the American Physical Society can be found at http://publish.aps.org/
URI: http://dx.doi.org/10.1103/PhysRevC.60.034902 Files in this item: 1
PhysRevC.60.034902.pdf (44.86Kb) -
Li, Ba; Ko, Che Ming. (American Physical Society, 1996)[more][less]
Abstract: Within the framework of a relativistic transport model (ART) for heavy-ion collisions at AGS energies, we examine the effects of a kaon dispersion relation on the transverse flow of kaons and their transverse momentum and azimuthal angle distributions. We find that the transverse flow is the most sensitive observable for studying the kaon dispersion relation in dense medium.
Description: Journals published by the American Physical Society can be found at http://publish.aps.org/
URI: http://dx.doi.org/10.1103/PhysRevC.54.3283 Files in this item: 1
PhysRevC.54.3283.pdf (77.18Kb) -
Brown, G. E.; Ko, Che Ming; Wu, Z. G.; Xia, L. H. (American Physical Society, 1991)[more][less]
Abstract: In heavy-ion collisions, kaons can be produced from baryon-baryon, meson-baryon, and meson-meson interactions. Simple meson-exchange models are introduced to study kaon production from these processes in the free space. These models are then extended to determine kaon production in hot, dense nuclear matter by taking into account the decreasing hadron masses as a result of the restoration of chiral symmetry and the condensation of kaons. We find that the cross sections for kaon production from all three processes are enhanced. In particular, the effect of decreasing hadron masses on kaon production from the meson-meson annihilation is most significant. In the hydrochemical model for heavy-ion collisions, we demonstrate that the observed enhancement of kaon yield in high-energy heavy-ion collisions can be explained if the medium effect is included.
Description: Journals published by the American Physical Society can be found at http://publish.aps.org/
URI: http://dx.doi.org/10.1103/PhysRevC.43.1881 Files in this item: 1
PhysRevC.43.1881.pdf (521.1Kb) -
Hoppenfeld, Jared (Emerald, 2012)[more][less]
Abstract: This research was performed with the goal of determining the potential benefit(s) of including web-based polling in the library instruction classroom. Over the course of a year, web-based polling was used in library instruction sessions and the survey results were recorded. Feedback forms were also used to gauge a sense of the students' experiences with this form of active learning. This study found that web-based polling in a library instruction classroom benefits both students and instructors. The students enjoy these sessions and are more attentive than in a typical lecture, which leads to better learning. Instructors are able to learn about the students' uses of technology, research methods, and more with the polling capability. This article may assist those deciding between different audience response systems and provide tips to those wishing to implement web-based polling, and more specifically Poll Everywhere, in their sessions.
URI: http://dx.doi.org/10.1108/07378831211239933 Files in this item: 1
Hoppenfeld Web Based Polling.pdf (523.6Kb) -
Sherman, Bernard; Singh, Vijay P. (American Geophysical Union, June 1982)[more][less]
Abstract: The kinematic model for surface irrigation, reported previously by Sherman and Singh (1978), is extended. Depending upon the duration of irrigation and time variability of infiltration, three cases are distinguished. Explicit solutions are obtained when infiltration is constant. When infiltration is varying in time, a numerical procedure is developed which is stable and has fast convergence. A rigorous theoretical justification is developed for computation of the depth of water at and the time history of the front wall of water advancing down an infiltrating plane or channel. A derivation is given of the continuity and momentum equations when there is lateral inflow and infiltration into the channel bed.
Description: An edited version of this paper was published by AGU. Copyright 1982 American Geophysical Union.
URI: http://dx.doi.org/10.1029/WR018i003p00659 Files in this item: 1
WR018i003p00659.pdf (611.7Kb) -
Singh, Vijay P.; Ram, Rama S. (American Geophysical Union, December 1983)[more][less]
Abstract: A kinematic model for surface irrigation is verified by experimental data obtained for 31 borders. These borders are of varied characteristics. Calculated values of advance times, water surface profiles when water reaches the end of the border, and recession times are compared with their observations. The prediction error in most cases remains below 20% for the advance time and below 15% for the recession time. The water surface profiles computed by the model agree with observed profiles reasonably well. For the data analyzed here the kinematic wave model is found to be sufficiently accurate for modeling the entire irrigation cycle except for the vertical recession.
Description: An edited version of this paper was published by AGU. Copyright 1983 American Geophysical Union.
URI: http://dx.doi.org/10.1029/WR019i006p01599 Files in this item: 1
WR019i006p01599.pdf (1.008Mb) -
Kinematic wave model for transient bed profiles in alluvial channels under nonequilibrium conditionsTayfur, Gokmen; Singh, Vijay P. (American Geophysical Union, December 27, 2007)[more][less]
Abstract: Transient bed profiles in alluvial channels are generally modeled using diffusion (or dynamic) waves and assuming equilibrium between detachment and deposition rates. Equilibrium sediment transport can be considerably affected by an excess (or deficiency) of sediment supply due to mostly flows during flash floods or floods resulting from dam break or dike failure. In such situations the sediment transport process occurs under nonequilibrium conditions, and extensive changes in alluvial river morphology can take place over a relatively short period of time. Therefore the study and prediction of these changes are important for sustainable development and use of river water. This study hence developed a mathematical model based on the kinematic wave theory to model transient bed profiles in alluvial channels under nonequilibrium conditions. The kinematic wave theory employs a functional relation between sediment transport rate and concentration, the shear-stress approach for flow transport capacity, and a relation between flow velocity and depth. The model satisfactorily simulated transient bed forms observed in laboratory experiments.
Description: An edited version of this paper was published by AGU. Copyright 2007 American Geophysical Union.
URI: http://dx.doi.org/10.1029/2006WR005681 Files in this item: 1
2006WR005681.pdf (457.7Kb) -
Bendz, David; Singh, Vijay P.; Rosqvist, H?�kan; Bengtsson, Lars (American Geophysical Union, November 1998)[more][less]
Abstract: The movement of water in a large (3.5 m3) undisturbed sample of 22-year-old municipal solid waste has been modeled using a kinematic wave approximation for unsaturated infiltration and internal drainage. The model employs a two-parameter power expression as macroscopic flux law. The model parameters were determined and interpreted in terms of the internal geometry of the waste medium by fitting the model to one set of infiltration and drainage data. The model was validated using another set of data from a sequence of water input events. The results of the validation show that the model performs satisfactorily, but further development of the model to incorporate spatial variability would increase its capability.
Description: An edited version of this paper was published by AGU. Copyright 1998 American Geophysical Union.
URI: http://dx.doi.org/10.1029/98WR01109 Files in this item: 1
98WR01109.pdf (736.6Kb) -
Tayfur, Gokmen; Singh, Vijay P. (American Geophysical Union, June 21, 2006)[more][less]
Abstract: A mathematical model, based on the kinematic wave (KW) theory, is developed for describing the evolution and movement of bed profiles in alluvial channels. The model employs a functional relation between sediment transport rate and concentration, a relation between flow velocity and depth and Velikanov's formula relating suspended sediment concentration to flow variables. Laboratory flume and field data are used to test the model. Transient bed profiles in alluvial channels are also simulated for several hypothetical cases involving different water flow and sediment concentration characteristics. The model‐simulated bed profiles are found to be in good agreement with what is observed in the laboratory, and they seem theoretically reasonable for hypothetical cases. The model results reveal that the mean particle velocity and maximum concentration (maximum bed form elevation) strongly affect transient bed profiles.
Description: An edited version of this paper was published by AGU. Copyright 2006 American Geophysical Union.
URI: http://dx.doi.org/10.1029/2005WR004089 Files in this item: 1
2005WR004089.pdf (1.253Mb)
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