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Article
Report number arXiv:1112.2194 ; CERN-PH-EP-2011-189 ; CERN-PH-EP-2011-189
Title Search for Extra Dimensions using diphoton events in 7 TeV proton-proton collisions with the ATLAS detector
Related titleSearch for extra dimensions using diphoton events in 7 TeV proton-proton collisions with the ATLAS detector
Author(s) ATLAS Collaboration  显示全部 3012 名作者
Publication 2013-07-16
Imprint 12 Dec 2011
Number of pages 19
Note Comments: 8 pages plus author list (20 pages total), 2 figures, 3 tables
8 pages plus author list (20 pages total), 2 figures, 3 tables, matches published version in Physics Letters B
In: Phys. Lett. B 710 (2012) 538-556
DOI 10.1016/j.physletb.2012.03.022
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; ATLAS
Free keywords exotics ; particle and resonance production ; experimental results
Abstract Using data recorded in 2011 with the ATLAS detector at the Large Hadron Collider, a search for evidence of extra spatial dimensions has been performed through an analysis of the diphoton final state. The analysis uses data corresponding to an integrated luminosity of 2.12 fb^-1 of sqrt(s) = 7 TeV proton-proton collisions. The diphoton invariant mass spectrum is observed to be in good agreement with the expected Standard Model background. In the large extra dimension scenario of Arkani-Hamed, Dimopoulos and Dvali, the results provide 95% CL lower limits on the fundamental Planck scale between 2.27 and 3.53 TeV, depending on the number of extra dimensions and the theoretical formalism used. The results also set 95% CL lower limits on the lightest Randall-Sundrum graviton mass of between 0.79 and 1.85 TeV, for values of the dimensionless coupling k/\bar{M}_{Pl} varying from 0.01 to 0.1. Combining with previously published ATLAS results from the dielectron and dimuon final states, the 95% CL lower limit on the Randall-Sundrum graviton mass for k/\bar{M}_{Pl} = 0.01 (0.1) is 0.80 (1.95) TeV.
Copyright/License publication: © 2012-2025 CERN (License: CC-BY-3.0)
preprint: © 2012-2025 CERN (License: CC-BY-3.0)



Corresponding record in: Inspire
Email contact: klaus.moenig@cern.ch


 记录创建於2011-12-12,最後更新在2024-03-14


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