Search for extra dimensions in diphoton events from proton-proton collisions at √s= 7 TeV in the ATLAS detector at the LHC
Author
Aad, G.; Abajyan, T.; Abbott, B.; Abdallah, J.; Abdel Khalek, S.; Abdelalim, A. A.; Abdinov, O.; Aben, R.; Abi, B.; Abolins, M.; Abouzeid, O. S.; Abramowicz, Halina; Abreu, H.; Acharya, B. S.; Adamczyk, L.; Adams, D. L.; Addy, T. N.; Adelman, J.; Adomeit, S.; Adragna, P.; Adye, T.; Aefsky, S.; Aguilar Saavedra, Juan Antonio; Agustoni, M.; Aharrouche, M.; Ahlen, S. P.; Ahles, F.; Ahmad, A.; Ahsan, M.; Aielli, G.; Aielli, G.; Akdogan, T.; Åkesson, T. P A; Akimoto, G.; Akimov, A. V.; Alam, M. S.; Alam, M. A.; Albert, J.; Albrand, S.; Aleksa, M.; Aleksandrov, I. N.; Alessandria, F.; Alexa, C.; Alexander, G.; Alexandre, G.; Alexopoulos, T.; Alhroob, M.; Aliev, M.; Alimonti, G.; Alison, J.; Allbrooke, B. M M; Allport, P. P.; Allwood-Spiers, S. E.; Almond, J.; Aloisio, A.; Aloisio, A.; Alon, R.; Alonso, A.; Alonso, F.; Altheimer, A.; Alvarez Gonzalez, B.; Alviggi, M. G.; Amako, K.; Amelung, C.; Ammosov, V. V.; Amor Dos Santos, S. P.; Amorim, A.; Amram, N.; Anastopoulos, C.; Ancu, L. S.; Andari, N.; Andeen, T.; Anders, C. F.; Anders, G.; Anderson, K. J.; Andreazza, A.; Andrei, V.; Andrieux, M. L.; Anduaga, X. S.; Anger, P.; Angerami, A.; Anghinolfi, F.; Anisenkov, A.; Anjos, N.; Annovi, A.; Antonaki, A.; Antonelli, M.; Antonov, A.; Antos, J.; Anulli, F.; Aoki, M.; Aoun, S.; Aperio Bella, L.; Apolle, R.; Terrón Cuadrado, JuanEntity
UAM. Departamento de Física TeóricaPublisher
CERN 2013 for the benefit of the ATLAS CollaborationDate
2013-04-04Citation
10.1088/1367-2630/15/4/043007
New Journal of Physics 15 (2013): 043007
ISSN
1367-2630DOI
10.1088/1367-2630/15/4/043007Editor's Version
http://dx.doi.org/10.1088/1367-2630/15/4/043007Subjects
Confidence levels; Hierarchy problem; Integrated luminosity; Invariant-mass spectra; Large Hadron Collider; Proton proton collisions; Spatial dimension; The standard model; FísicaRights
© CERN 2013 for the benefit of the ATLAS Collaboration.Abstract
The large difference between the Planck scale and the electroweak scale, known as the hierarchy problem, is addressed in certain models through the postulate of extra spatial dimensions. A search for evidence of extra spatial dimensions in the diphoton channel has been performed using the full set of proton-proton collisions at √s = 7 TeV recorded in 2011 with the ATLAS detector at the CERN Large Hadron Collider. This dataset corresponds to an integrated luminosity of 4.9 fb1. The diphoton invariant mass spectrum is observed to be in good agreement with the Standard Model expectation. In the context of the model proposed by Arkani-Hamed, Dimopoulos and Dvali, 95% confidence level lower limits of between 2.52 and 3.92 TeV are set on the ultraviolet cutoff scale MS depending on the number of extra dimensions and the theoretical formalism used. In the context of the Randall-Sundrum model, a lower limit of 2.06 (1.00) TeV at 95% confidence level is set on the mass of the lightest graviton for couplings of k/MPl = 0.1(0.01). Combining with the ATLAS dilepton searches based on the 2011 data, the 95% confidence level lower limit on the Randall-Sundrum graviton mass is further tightened to 2.23 (1.03) TeV for k/ MPl= 0.1(0.01)
Files in this item
Google Scholar:Aad, G.
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Abajyan, T.
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Abbott, B.
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Abdallah, J.
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Abdel Khalek, S.
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Abdelalim, A. A.
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Abdinov, O.
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Aben, R.
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Abi, B.
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Abolins, M.
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Abouzeid, O. S.
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Abramowicz, Halina
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Abreu, H.
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Acharya, B. S.
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Adamczyk, L.
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Adams, D. L.
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Addy, T. N.
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Adelman, J.
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Adomeit, S.
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Adragna, P.
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Adye, T.
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Aefsky, S.
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Aguilar Saavedra, Juan Antonio
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Agustoni, M.
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Aharrouche, M.
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Ahlen, S. P.
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Ahles, F.
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Ahmad, A.
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Ahsan, M.
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Aielli, G.
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Aielli, G.
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Akdogan, T.
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Åkesson, T. P A
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Akimoto, G.
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Akimov, A. V.
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Alam, M. S.
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Alam, M. A.
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Albert, J.
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Albrand, S.
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Aleksa, M.
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Aleksandrov, I. N.
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Alessandria, F.
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Alexa, C.
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Alexander, G.
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Alexandre, G.
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Alexopoulos, T.
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Alhroob, M.
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Aliev, M.
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Alimonti, G.
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Alison, J.
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Allbrooke, B. M M
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Allport, P. P.
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Allwood-Spiers, S. E.
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Almond, J.
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Aloisio, A.
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Aloisio, A.
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Alon, R.
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Alonso, A.
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Alonso, F.
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Altheimer, A.
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Alvarez Gonzalez, B.
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Alviggi, M. G.
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Amako, K.
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Amelung, C.
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Ammosov, V. V.
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Amor Dos Santos, S. P.
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Amorim, A.
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Amram, N.
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Anastopoulos, C.
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Ancu, L. S.
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Andari, N.
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Andeen, T.
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Anders, C. F.
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Anders, G.
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Anderson, K. J.
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Andreazza, A.
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Andrei, V.
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Andrieux, M. L.
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Anduaga, X. S.
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Anger, P.
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Angerami, A.
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Anghinolfi, F.
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Anisenkov, A.
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Anjos, N.
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Annovi, A.
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Antonaki, A.
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Antonelli, M.
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Antonov, A.
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Antos, J.
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Anulli, F.
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Aoki, M.
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Aoun, S.
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Aperio Bella, L.
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Apolle, R.
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Terrón Cuadrado, Juan
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