Search for heavy, long-lived particles that decay to photons in ppbar collisions at sqrt(s)=1.96 tev
| Title: | Search for heavy, long-lived particles that decay to photons in ppbar collisions at sqrt(s)=1.96 tev |
| Author: | Wagner, Peter |
| Abstract: | This dissertation presents the results of the first search for heavy, neutral, longlived particles that decay to photons at a hadron collider. We use a sample of +jet+missing transverse energy events in p¯p collisions at ps = 1.96 TeV taken with the Collider Detector at Fermilab. Candidate events are selected based on the arrival time of a high-energy photon at the electromagnetic calorimeter as measured with a timing system that was recently installed. The final result is that we find 2 events, using 570±34 pb−1 of data collected during 2004-2005 at the Fermilab Tevatron, consistent with the background estimate of 1.3±0.7 events. While our search strategy does not rely on model-specific dynamics, we interpret this result in terms of cross section limits in a supersymmetric model with e01! eG and set a world-best e01 mass reach of 101 GeV/c2 at e = 5 ns. We can exclude any +jet+missing transverse energy signal that would produce more than 5.5 events. |
| Subject: |
long-lived
timing susy gmsb cdf photons neutralinos |
| URI: | http://hdl.handle.net/1969.1/ETD-TAMU-1962 |
| Date: | 2007-08 |
Citation
(2007).
Search for heavy, long-lived particles that decay to photons in ppbar collisions at sqrt(s)=1.96 tev.
Doctoral dissertation,
Texas A&M University. Available electronically from
http : / /hdl .handle .net /1969 .1 /ETD -TAMU -1962.
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| Files | Size | Format | View |
|---|---|---|---|
| WAGNER-DISSERTATION.pdf | 4.224Mb |
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Electronic Theses, Dissertations, and Records of Study (2002-present) [10425]
Electronic Theses, Dissertations, and Records of Study Collection
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