Search for photonic signatures of gauge-mediated supersymmetry in 13 TeV p p collisions with the ATLAS detector

Research output: Contribution to journalArticle

  • Authors:
  • ATLAS Collaboration
  • Agni Bethani
  • Rafal Bielski
  • Ian Connelly
  • Brian Cox
  • Cinzia Da Via
  • Nicholas Dann
  • Giulio Forcolin
  • Alessandra Forti
  • James Howarth
  • Frederick Loebinger
  • Jiri Masik
  • Stephen Menary
  • Francisca Munoz Sanchez
  • Alexander Oh
  • Emily Orgill
  • Joleen Pater
  • Yvonne Peters
  • Andrew Pilkington
  • Darren Price
  • Yang Qin
  • John Raine
  • Jacob Rawling
  • Rhys Roberts
  • H. Schweiger
  • Savanna Shaw
  • Stephen Watts
  • Terence Wyatt

Abstract

A search is presented for photonic signatures, motivated by generalized models of gauge-mediated supersymmetry breaking. This search makes use of proton-proton collision data at

s
=
13


TeV
corresponding to an integrated luminosity of
36.1


fb

1
recorded by the ATLAS detector at the LHC, and it explores models dominated by both strong and electroweak production of supersymmetric partner states. Experimental signatures incorporating an isolated photon and significant missing transverse momentum are explored. These signatures include events with an additional photon or additional jet activity not associated with any specific underlying quark flavor. No significant excess of events is observed above the Standard Model prediction, and 95% confidence-level upper limits of between 0.083 and 0.32 fb are set on the visible cross section of contributions from physics beyond the Standard Model. These results are interpreted in terms of lower limits on the masses of gluinos, squarks, and gauginos in the context of generalized models of gauge-mediated supersymmetry, which reach as high as 2.3 TeV for strongly produced and 1.3 TeV for weakly produced supersymmetric partner pairs.

Bibliographical metadata

Original languageEnglish
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume97
DOIs
Publication statusPublished - 22 May 2018