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Search for extra dimensions using diphoton events in 7 TeV proton-proton collisions with the ATLAS detector*

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 s=7 TeV proton-prot...

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Main Authors: Aad, Georges (Author) , Anders, Christoph (Author) , Anders, Gabriel (Author) , Andrei, George Victor (Author) , Davygora, Yuriy (Author) , Dietzsch, Thorsten (Author) , Geweniger, Christoph (Author) , Hanke, Paul (Author) , Henke, Michael (Author) , Kasieczka, Gregor (Author) , Khomich, Andrei (Author) , Kluge, Eike-Erik (Author) , Kugel, Andreas (Author) , Lendermann, Victor (Author) , Männer, Reinhard (Author) , Meier, Karlheinz (Author) , Müller, Felix (Author) , Narayan, Rohin T. (Author) , Poddar, Sahill (Author) , Schätzel, Sebastian (Author) , Scharf, Veit (Author) , Schmitt, Sebastian (Author) , Schöning, André (Author) , Schroer, Nicolai (Author) , Schultz-Coulon, Hans-Christian (Author) , Stamen, Rainer (Author) , Wessels, Martin (Author)
Corporate Author: ATLAS Collaboration (Author)
Format: Article (Journal)
Language:English
Published: 20 April 2012
In: Physics letters
Year: 2012, Volume: 710, Issue: 4, Pages: 538-556
ISSN:1873-2445
DOI:10.1016/j.physletb.2012.03.022
Online Access:Verlag, Volltext: http://dx.doi.org/10.1016/j.physletb.2012.03.022
Verlag, Volltext: http://www.sciencedirect.com/science/article/pii/S0370269312002869
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Author Notes:ATLAS Collaboration*
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Summary: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 s=7 TeV proton-proton collisions. The diphoton invariant mass (mγγ) 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/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/M¯Pl=0.01 (0.1) is 0.80 (1.95) TeV.
Item Description:ATLAS Collaboration: G. Aad, G. Anders, V. Andrei, Y. Davygora, T.A. Dietzsch, C. Geweniger, P. Hanke, M. Henke, G. Kasieczka, A. Khomich, E.E. Kluge, A. Kugel, V. Lendermann, R. Maenner, K. Meier, F. Müller, R. Narayan, S. Poddar, S. Schaetzel, V. Scharf, S. Schmitt, A. Schöning, N. Schroer, H.-C. Schultz-Coulon, R. Stamen, M. Wessels [und weitere]
Gesehen am 28.11.2018
Physical Description:Online Resource
ISSN:1873-2445
DOI:10.1016/j.physletb.2012.03.022

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