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ATLAS_Collaboration_Search_for_squarks_and_gluinos_with_the_ATLAS_detector_etc.pdf (1.5 MB)

Search for squarks and gluinos with the ATLAS detector in final states with jets and missing transverse momentum using vs=8 TeV proton-proton collision data

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journal contribution
posted on 2023-06-08, 21:41 authored by Alessandro CerriAlessandro Cerri, C Chavez Barajas, Antonella De SantoAntonella De Santo, Z J Grout, C T Potter, Fabrizio SalvatoreFabrizio Salvatore, I Santoyo Castillo, Y Shehu, Mark SuttonMark Sutton, Iacopo Vivarelli, et al. Others (ATLAS collaboration)
A search for squarks and gluinos in final states containing high-p T jets, missing transverse momentum and no electrons or muons is presented. The data were recorded in 2012 by the ATLAS experiment in sv=8 TeV proton-proton collisions at the Large Hadron Collider, with a total integrated luminosity of 20.3 fb-1. Results are interpreted in a variety of simplified and specific supersymmetry-breaking models assuming that R-parity is conserved and that the lightest neutralino is the lightest supersymmetric particle. An exclusion limit at the 95% confidence level on the mass of the gluino is set at 1330 GeV for a simplified model incorporating only a gluino and the lightest neutralino. For a simplified model involving the strong production of first- and second-generation squarks, squark masses below 850 GeV (440 GeV) are excluded for a massless lightest neutralino, assuming mass degenerate (single light-flavour) squarks. In mSUGRA/CMSSM models with tan ß = 30, A 0 = -2m 0 and µ > 0, squarks and gluinos of equal mass are excluded for masses below 1700 GeV. Additional limits are set for non-universal Higgs mass models with gaugino mediation and for simplified models involving the pair production of gluinos, each decaying to a top squark and a top quark, with the top squark decaying to a charm quark and a neutralino. These limits extend the region of supersymmetric parameter space excluded by previous searches with the ATLAS detector.

Funding

Consolidated Grant; G0927; STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL; ST/K001329/1

History

Publication status

  • Published

File Version

  • Published version

Journal

Journal of High Energy Physics

ISSN

1029-8479

Publisher

Institute of Physics

Issue

9

Volume

2014

Article number

a176

Department affiliated with

  • Physics and Astronomy Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2015-07-17

First Open Access (FOA) Date

2015-07-17

First Compliant Deposit (FCD) Date

2015-07-17

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