Title
Search for signatures of extra dimensions in the diphoton mass spectrum at the large hadron collider
Date Issued
12 March 2012
Access level
open access
Resource Type
research article
Author(s)
Chatrchyan S.
Khachatryan V.
Sirunyan A.M.
Tumasyan A.
Adam W.
Bergauer T.
Dragicevic M.
Erö J.
Fabjan C.
Friedl M.
Frühwirth R.
Ghete V.M.
Hammer J.
Hoch M.
Hörmann N.
Hrubec J.
Jeitler M.
Kiesenhofer W.
Knapitsch A.
Krammer M.
Liko D.
Mikulec I.
Pernicka M.
Rahbaran B.
Rohringer H.
Schöfbeck R.
Strauss J.
Taurok A.
Teischinger F.
Trauner C.
Wagner P.
Waltenberger W.
Walzel G.
Widl E.
Wulz C.E.
Mossolov V.
Shumeiko N.
Suarez Gonzalez J.
Bansal S.
Benucci L.
De Wolf E.A.
Janssen X.
Luyckx S.
Maes T.
Mucibello L.
Ochesanu S.
Roland B.
Rougny R.
Selvaggi M.
Van Haevermaet H.
Van Mechelen P.
Van Remortel N.
Van Spilbeeck A.
Blekman F.
Blyweert S.
D'hondt J.
Gonzalez Suarez R.
Kalogeropoulos A.
Maes M.
Olbrechts A.
Van Doninck W.
Van Mulders P.
Van Onsem G.P.
Villella I.
Charaf O.
Clerbaux B.
De Lentdecker G.
Dero V.
Gay A.P.R.
Hammad G.H.
Hreus T.
Léonard A.
Marage P.E.
Thomas L.
Vander Velde C.
Vanlaer P.
Wickens J.
Adler V.
Beernaert K.
Cimmino A.
Costantini S.
Grunewald M.
Klein B.
Lellouch J.
Marinov A.
Mccartin J.
Ryckbosch D.
Strobbe N.
Thyssen F.
Tytgat M.
Vanelderen L.
Verwilligen P.
Walsh S.
Zaganidis N.
Basegmez S.
Bruno G.
Caudron J.
Ceard L.
De Favereau De Jeneret J.
Delaere C.
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=7TeV corresponding to an integrated luminosity of 2.2fb -1. In the context of the large-extra-dimensions model, lower limits are set on the effective Planck scale in the range of 2.3-3.8TeV 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 0.86-1.84TeV, for values of the associated coupling parameter between 0.01 and 0.10. © 2012 CERN, for the LHCb Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published articles title, journal citation, and DOI.
Volume
108
Issue
11
Language
English
OCDE Knowledge area
Física de partículas, Campos de la Física
Subjects
Scopus EID
2-s2.0-84863255749
Source
Physical Review Letters
ISSN of the container
00319007
Sponsor(s)
National Science Foundation
Sources of information:
Directorio de Producción Científica
Scopus