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.
| Identifer | oai:union.ndltd.org:tamu.edu/oai:repository.tamu.edu:1969.1/ETD-TAMU-1962 |
| Date | 02 June 2009 |
| Creators | Wagner, Peter |
| Contributors | Toback, David |
| Source Sets | Texas A and M University |
| Language | en_US |
| Detected Language | English |
| Type | Book, Thesis, Electronic Dissertation, text |
| Format | electronic, application/pdf, born digital |
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