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Compact Muon Solenoid
LHC, CERN
CMS-PAS-EXO-12-045
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Search for High-Mass Diphoton Resonances in pp Collisions at √s = 8 TeV with the CMS Detector
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CMS Collaboration
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May 2015
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Abstract:
A search for high-mass diphoton resonances is performed in proton-proton collisions at √s= 8 TeV, with data corresponding to an integrated luminosity of 19.5 fb−1, collected by the CMS detector at the CERN Large Hadron Collider. Such a diphoton resonance could be a signature of an excited state of the graviton in the Randall-Sundrum scenario with a warped extra dimension of space. The background to this signal comes from real standard model diphoton production, and from photon+jet or dijet processes where one or two jets produce a fake photon signature in the detector. The observed diphoton mass distribution is compared to the background prediction, and no significant excess of events over the background is found. 95% confidence level limits are set in the parameter space of the Randall-Sundrum model: masses below 1450-2780 GeV are excluded for the first excited state of the Randall-Sundrum graviton, for values of the coupling parameter k/MPl in the range 0.01 ≤k/MPl≤ 0.1.
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Links:
CDS record (PDF) ;
inSPIRE record ;
Public twiki page ;
CADI line (restricted) ;
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Compact Muon Solenoid LHC, CERN
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