Search for long-lived particles in events with photons and missing energy in proton–proton collisions at √ s = 7 TeV
Name
1-s2.0-S0370269313003067-main.pdf
Description
Published version
Size
820.51 KB
Format
Adobe PDF
Checksum (MD5)
1789764fff6f223e775f2ea308ab2eee
Author(s)
The CMS Collaboration
Date Issued
2013
Journal
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Publisher
Elsevier BV
Citation
Chatrchyan, S., et al. "Search for Long-Lived Particles in Events with Photons and Missing Energy in Proton-Proton Collisions at Root S=7 Tev." Physics Letters B 722 4-5 (2013): 273-94.
Version
Final published version
Abstract
© 2013 CERN Results are presented from a search for long-lived neutralinos decaying into a photon and an invisible particle, a signature associated with gauge-mediated supersymmetry breaking in supersymmetric models. The analysis is based on a 4.9fb−1 sample of proton-proton collisions at s=7TeV, collected with the CMS detector at the LHC. The missing transverse energy and the time of arrival of the photon at the electromagnetic calorimeter are used to search for an excess of events over the expected background. No significant excess is observed, and lower limits at the 95% confidence level are obtained on the mass of the lightest neutralino, m>220GeV (for cτ<500mm), as well as on the proper decay length of the lightest neutralino, cτ>6000mm (for m<150GeV).
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution 3.0 unported license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1016/J.PHYSLETB.2013.04.027
