UNIGE document Scientific Article
previous document  unige:38529  next document
add to browser collection
Title

Search for heavy, long-lived neutralinos that decay to photons at CDF II using photon timing

CollaborationWith : Clark, Allan Geoffrey / Sfyrla, Anna / Vallecorsa, Sofia / Wu, Xin
Published in Physical Review. D. 2008, vol. 78, no. 03, p. 032015
Abstract We present the results of the first hadron collider search for heavy, long-lived neutralinos that decay via χ˜01→γG˜ in gauge-mediated supersymmetry breaking models. Using an integrated luminosity of 570±34  pb−1 of pp collisions at s√=1.96  TeV, we select γ+jet+missing transverse energy candidate events based on the arrival time of a high-energy photon at the electromagnetic calorimeter as measured with a timing system that was recently installed on the CDF II detector. We find 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 and place the world-best 95% C.L. lower limit on the χ˜01 mass of 101  GeV/c2 at τχ˜01=5  ns.
Identifiers
Full text
Structures
Citation
(ISO format)
CDF COLLABORATION. Search for heavy, long-lived neutralinos that decay to photons at CDF II using photon timing. In: Physical Review. D, 2008, vol. 78, n° 03, p. 032015. https://archive-ouverte.unige.ch/unige:38529

161 hits

29 downloads

Update

Deposited on : 2014-07-08

Export document
Format :
Citation style :