Search for Signatures of Extra Dimensions in the Diphoton Mass Spectrum at the Large Hadron Collider
Name
Chatrchyan-2012-Search for Signatures of Extra Dimensions in.pdf
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383.32 KB
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Author(s)
Bauer, Gerry P.
Alver, Burak Han
Bendavid, Joshua L.
Busza, Wit
Butz, Erik M.
Cali, Ivan Amos
Chan, M.
Dutta, Valentina
Gomez-Ceballos, Guillelmo
Goncharov, Maxim
Date Issued
March 2012
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
S. Chatrchyan et al. (CMS Collaboration). "Search for Signatures of Extra Dimensions in the Diphoton Mass Spectrum at the Large Hadron Collider" Physical Review Letters 108, 111801 (2012). © 2012 CERN, for the CMS Collaboration
Version
Final published version
Abstract
A search for signatures of extra spatial dimensions in the diphoton invariant-mass spectrum has been performed with the CMS detector at the LHC. No excess of events above the standard model expectation is observed using a data sample collected in proton-proton collisions at √s=7 TeV corresponding to an integrated luminosity of 2.2 fb[superscript -1]. In the context of the large-extra-dimensions model, lower limits are set on the effective Planck scale in the range of 2.3–3.8 TeV at the 95% confidence level. These limits are the most restrictive bounds on virtual-graviton exchange to date. The most restrictive lower limits to date are also set on the mass of the first graviton excitation in the Randall-Sundrum model in the range of 0.86–1.84 TeV, for values of the associated coupling parameter between 0.01 and 0.10.
MIT Department
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.108.111801
