Naslov
Search for excited quarks in the γ + jet final state in proton–proton collisions at √s = 8 TeV

Autori
Khachatryan, V. ; ... ; Godinović, Nikola ; Lelas, Damir ; Pleština, Roko ; Polić, Dunja ; Puljak, Ivica ; Antunović, Željko ; Kovač, Marko ; Brigljević, Vuko ; Đurić, Senka ; Kadija, Krešo ; Luetić, Jelena ; Mekterović, Darko ; Morović, Srećko ; Sudic, Lucija ; ... ; Woods, N.

Izvornik
Physics letters. B (0370-2693) 738 (2014); 274-293

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
CMS; Physics; Photon; Jet

Sažetak
A search for excited quarks decaying into the γ +jet final state is presented. The analysis is based on data corresponding to an integrated luminosity of 19.7 fb−1 collected by the CMS experiment in proton– proton collisions at √s = 8 TeV at the LHC. Events with photons and jets with high transverse momenta are selected and the γ + jet invariant mass distribution is studied to search for a resonance peak. The 95% confidence level upper limits on the product of cross section and branching fraction are evaluated as a function of the excited quark mass. Limits on excited quarks are presented as a function of their mass and coupling strength ; masses below 3.5 TeV are excluded at 95% confidence level for unit couplings to their standard model partners.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA