Publications by Alan Barr

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

Journal of High Energy Physics 2014 (2014)

ATLASC The, G Aad, B Abbott, J Abdallah, SA Khalek, O Abdinov, R Aben, B Abi, M Abolins, OS AbouZeid, H Abramowicz, H Abreu, R Abreu, Y Abulaiti, Y Abulaiti, BS Acharya, BS Acharya, BS Acharya, L Adamczyk, DL Adams, J Adelman, S Adomeit, T Adye, T Agatonovic-Jovin, JA Aguilar-Saavedra, JA Aguilar-Saavedra, M Agustoni, SP Ahlen, F Ahmadov, F Ahmadov, G Aielli, G Aielli, H Akerstedt, H Akerstedt, TPA Åkesson, G Akimoto, AV Akimov, GL Alberghi, GL Alberghi, J Albert, S Albrand, MJA Verzini, M Aleksa, IN Aleksandrov, C Alexa, G Alexander, G Alexandre, T Alexopoulos, M Alhroob, M Alhroob, G Alimonti, L Alio, J Alison, BMM Allbrooke, LJ Allison, PP Allport, J Almond, A Aloisio, A Aloisio, A Alonso, F Alonso, C Alpigiani, A Altheimer, BA Gonzalez, MG Alviggi, MG Alviggi, K Amako, YA Coutinho, C Amelung, D Amidei, SPAD Santos, SPAD Santos, A Amorim, A Amorim, S Amoroso, N Amram, G Amundsen, C Anastopoulos, LS Ancu, N Andari, T Andeen, CF Anders, G Anders, KJ Anderson, A Andreazza, A Andreazza, V Andrei, XS Anduaga, S Angelidakis, I Angelozzi, P Anger, A Angerami, F Anghinolfi, AV Anisenkov, N Anjos, A Annovi, A Antonaki, M Antonelli, A Antonov, J Antos

© 2014, The Author(s). Abstract: A search for squarks and gluinos in final states containing high-pT jets, missing transverse momentum and no electrons or muons is presented. The data were recorded in 2012 by the ATLAS experiment in (formula presented) 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 β = 30, A0 = −2m0 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.[Figure not available: see fulltext.]

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