Search for new phenomena in photon+jet events collected in proton--proton collisions at √s = 8 TeV with the ATLAS detector

0432948 - FZÚ 2015 RIV NL eng J - Journal Article
Aad, G. - Abajyan, T. - Abbott, B. - Böhm, Jan - Chudoba, Jiří - Hejbal, Jiří - Jakoubek, Tomáš - Kepka, Oldřich - Kupčo, Alexander - Kůs, Vlastimil - Lokajíček, Miloš - Lysák, Roman - Marčišovský, Michal - Mikeštíková, Marcela - Myška, Miroslav - Němeček, Stanislav - Dos Santos, D.R. - Růžička, P. - Schovancová, J. - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek - Tic, Tomáš - Vrba, Václav … Total 2923 authors
Search for new phenomena in photon+jet events collected in proton--proton collisions at √s = 8 TeV with the ATLAS detector.
Physics Letters. B. Roč. 728, Jan (2014), s. 562-578. ISSN 0370-2693. E-ISSN 1873-2445
R&D Projects: GA MŠMT(CZ) LG13009
Institutional support: RVO:68378271
Keywords : photon * black hole * quantum * jet mass spectrum * resonance * production * background * model * ATLAS * quark * CERN LHC Coll * new physics
Subject RIV: BF - Elementary Particles and High Energy Physics
Impact factor: 6.131, year: 2014

This letter describes a model-independent search for the production of new resonances in photon + jet events using 20 inverse fb of proton--proton LHC data recorded with the ATLAS detector at a centre-of-mass energy of s√ = 8 TeV. The photon + jet mass distribution is compared to a background model fit from data; no significant deviation from the background-only hypothesis is found. Limits are set at 95% credibility level on generic Gaussian-shaped signals and two benchmark phenomena beyond the Standard Model: non-thermal quantum black holes and excited quarks. Non-thermal quantum black holes are excluded below masses of 4.6 TeV and excited quarks are excluded below masses of 3.5 TeV.
Permanent Link: http://hdl.handle.net/11104/0237248