Search for scalar top quark pair production in natural gauge mediated supersymmetry models with the ATLAS detector in pp collisions at s=7TeV

Journal Article

The results of a search for pair production of the lighter scalar partners of top quarks (t~1) in 2.05 fb-1 of pp collisions at s=7 TeV using the ATLAS experiment at the LHC are reported. Scalar top quarks are searched for in events with two same flavour opposite-sign leptons (e, μ) with invariant mass consistent with the Z boson mass, large missing transverse momentum and jets in the final state. At least one of the jets is identified as originating from a b-quark. No excess over Standard Model expectations is found. The results are interpreted in the framework of R-parity conserving, gauge mediated Supersymmetry breaking 'natural' scenarios, where the neutralino (χ~10) is the next-to-lightest supersymmetric particle. Scalar top quark masses up to 310 GeV are excluded for 115GeVmZ. © 2012 CERN.

Full Text

Duke Authors

Cited Authors

  • Aad, G; Abbott, BK; Abdallah, JM; Abdel Khalek, S; Abdelalim, AA; Abdinov, OB; Abi, BA; Abolins, MA; AbouZeid, OS; Abramowicz, H; Abreu, H; Acerbi, E; Acharya, BS; Adamczyk, L; Adams, DL; Addy, TN; Adelman, J; Adomeit, S; Adragna, P; Adye, TJ; Aefsky, S; Aguilar-Saavedra, JA; Aharrouche, M; Ahlen, SP; Ahles, F; Ahmad, A; Ahsan, MAH; Aielli, G; Akdoǧan, T; Åkesson, TPA; Akimoto, G; Akimov, AV; Akiyama, A; Alam, MS; Alam, MA; Albert, JB; Albrand, S; Aleksa, M; Aleksandrov, IN; Alessandria, F; Alexa, C; Alexander, G; Alexandre, G; Alexopoulos, TA; Alhroob, M; Aliev, MA; Alimonti, G; Alison, JM; Allbrooke, BMM; Allport, PP; Allwood-Spiers, SE; Almond, JE; Aloisio, A; Alon, R; Alonso, A; Álvarez González, B; Alviggi, MG; Amako, K; Amelung, C; Ammosov, VV; Amorim, AEA; Amorós, G; Amram, N; Anastopoulos, C; Ancu, LS; Andari, N; Andeen, TR; Anders, CF; Anders, G; Anderson, KJ; Andreazza, A; Andrei, V; Anduaga, XS; Angerami, A; Anghinolfi, F; Anisenkov, AV; Anjos, N; Annovi, A; Antonaki, A; Antonelli, M; Antonov, AA; Antoš, J; Anulli, F; Aoun, S; Aperio Bella, L; Apolle, R; Arabidze, G; Aracena, I; Arai, Y; Arce, ATH; Arfaoui, S; Arguin, JF; Arik, EB; Arik, M; Armbruster, AJ; Arnaez, O; Arnal, V; Arnault, C; Artamonov, AV

Published Date

  • August 29, 2012

Published In

Volume / Issue

  • 715 / 1-3

Start / End Page

  • 44 - 60

International Standard Serial Number (ISSN)

  • 0370-2693

Digital Object Identifier (DOI)

  • 10.1016/j.physletb.2012.07.010

Citation Source

  • Scopus