Search for B − L R-parity-violating top squarks in ffiffi s p = 13 TeV pp collisions with the ATLAS experiment

Research output: Contribution to journalArticle

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

Abstract

A search is presented for the direct pair production of the stop, the supersymmetric partner of the top quark, that decays through an
R
-parity-violating coupling to a final state with two leptons and two jets, at least one of which is identified as a
b
-jet. The data set corresponds to an integrated luminosity of
36.1


fb

1
of proton-proton collisions at a center-of-mass energy of

s
=
13


TeV
, collected in 2015 and 2016 by the ATLAS detector at the LHC. No significant excess is observed over the Standard Model background, and exclusion limits are set on stop pair production at a 95% confidence level. Lower limits on the stop mass are set between 600 GeV and 1.5 TeV for branching ratios above 10% for decays to an electron or muon and a
b
-quark.

Bibliographical metadata

Original languageEnglish
JournalPhysical Review D (Particles, Fields, Gravitation and Cosmology)
Early online date6 Feb 2018
DOIs
Publication statusPublished - 2018