Title
Search for heavy long-lived particles that decay to photons at CDF II Search for heavy long-lived particles that decay to photons at CDF II
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
New York, N.Y. ,
Subject
Physics
Source (journal)
Physical review letters. - New York, N.Y.
Volume/pages
99(2007) :12 , p. 121801,1-121801,7
ISSN
0031-9007
ISI
000249668000020
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
We present the first search for heavy, long-lived particles that decay to photons at a hadron collider. We use a sample of γ+jet+missing transverse energy events in pp̅ collisions at √s=1.96  TeV taken with the CDF II detector. Candidate events are selected based on the arrival time of the photon at the detector. Using an integrated luminosity of 570  pb-1 of collision data, we observe 2 events, consistent with the background estimate of 1.3±0.7 events. While our search strategy does not rely on model-specific dynamics, we set cross section limits in a supersymmetric model with χ10→γG and place the world-best 95% C.L. lower limit on the χ10 mass of 101  GeV/c2 at τχ10=5  ns.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/2d7f68/174322b5.pdf
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