Search for new phenomena in high-mass diphoton final states using 37 fb −1 of proton–proton collisions collected at √s = 13 TeV with the ATLAS detector

ATLAS Collaboration

doi:10.1016/j.physletb.2017.10.039

Scientific article

English

Search for new phenomena in high-mass diphoton final states using 37 fb −1 of proton–proton collisions collected at √s = 13 TeV with the ATLAS detector

ContributorsATLAS Collaboration

Published inPhysics Letters. B, vol. 775, p. 105-125

Collection

Open Access - SCOAP3

Publication date2017

Abstract

Searches for new phenomena in high-mass diphoton final states with the ATLAS experiment at the LHC are presented. The analysis is based on pp collision data corresponding to an integrated luminosity of 36.7 fb −1 at a centre-of-mass energy s=13 TeV recorded in 2015 and 2016. Searches are performed for resonances with spin 0, as predicted by theories with an extended Higgs sector, and for resonances with spin 2, using a warped extra-dimension model as a benchmark model, as well as for non-resonant signals, assuming a large extra-dimension scenario. No significant deviation from the Standard Model is observed. Upper limits are placed on the production cross section times branching ratio to two photons as a function of the resonance mass. In addition, lower limits are set on the ultraviolet cutoff scale in the large extra-dimensions model.

Affiliation entities

Faculté des sciences / Section de physique / Département de physique nucléaire et corpusculaire

Citation (ISO format)

ATLAS Collaboration. Search for new phenomena in high-mass diphoton final states using 37 fb −1 of proton–proton collisions collected at √s = 13 TeV with the ATLAS detector. In: Physics Letters. B, 2017, vol. 775, p. 105–125. doi: 10.1016/j.physletb.2017.10.039