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https://hdl.handle.net/11147/10672
Title: | Search for long-lived particles in events with photons and missing energy in proton-proton collisions at root s=7 TeV | Authors: | CMS Collaboration | Keywords: | CMS LHC SUSY Exotica GMSB Long-lived Photons Displaced |
Publisher: | Elsevier Ltd. | Abstract: | 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 4.9 fb(-1) sample of proton-proton collisions at root s = 7 TeV, 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 > 220 GeV (for c tau < 500 mm), as well as on the proper decay length of the lightest neutralino, c tau > 6000 mm (for m < 150 GeV). (c) 2013 CERN. Published by Elsevier B.V. All rights reserved. | URI: | https://doi.org/10.1016/j.physletb.2013.04.027 https://hdl.handle.net/11147/10672 |
ISSN: | 0370-2693 |
Appears in Collections: | Rectorate / Rektörlük Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection |
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