Search for extra dimensions in diphoton events using proton-proton collisions recorded at √s = 7 TeV with the ATLAS detector at the LHC

0424587 - FZÚ 2014 RIV DE eng J - Článek v odborném periodiku
Aad, G. - Abajyan, T. - Abbott, B. - Böhm, Jan - Chudoba, Jiří - Gallus, Petr - Gunther, Jaroslav - Jakoubek, Tomáš - Juránek, Vojtěch - Kepka, Oldřich - Kupčo, Alexander - Kůs, Vlastimil - Lokajíček, Miloš - Marčišovský, Michal - Mikeštíková, Marcela - Myška, Miroslav - Němeček, Stanislav - Růžička, Pavel - Schovancová, Jaroslava - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek - Tic, Tomáš - Valenta, J. - Vrba, Václav - Zeman, Martin … celkem 2905 autorů
Search for extra dimensions in diphoton events using proton-proton collisions recorded at √s = 7 TeV with the ATLAS detector at the LHC.
New Journal of Physics. Roč. 15, č. 4 (2013), "043007-1"-"043007-9". ISSN 1367-2630. E-ISSN 1367-2630
Grant CEP: GA MŠMT LA08032
Institucionální podpora: RVO:68378271
Klíčová slova: higher-dimensional * photon photon * mass spectrum * measured * final state * two-photon * graviton * mass * upper limit * scattering * ATLAS * CERN LHC
Kód oboru RIV: BG - Jaderná, atomová a mol. fyzika, urychlovače
Impakt faktor: 3.671, rok: 2013

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 sqrt(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 fb. 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 TeV and 3.92 TeV are set on the ultraviolet cutoff scale Ms depending on the number of extra dimensions and the theoretical formalism used.
Trvalý link: http://hdl.handle.net/11104/0230649