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

In: Physics Letters B, Vol. 775, 10.12.2017, p. 105-125.

Research output: Contribution to journalArticle

Published
  • The ATLAS Collaboration

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=13TeV 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.
Original languageEnglish
Pages (from-to)105-125
Number of pages21
JournalPhysics Letters B
Volume775
Early online date24 Oct 2017
DOIs
Publication statusPublished - 10 Dec 2017
This open access research output is licenced under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.

ID: 29115787