Search for heavy vector-like quarks coupling to light quarks in proton-proton collisions at √s=7 TeV with the ATLAS detector

Journal Article

This Letter presents a search for singly produced vector-like quarks, Q, coupling to light quarks, q. The search is sensitive to both charged current (CC) and neutral current (NC) processes, pp→Qq→Wqq' and pp→Qq→Zqq' with a leptonic decay of the vector gauge boson. In 1.04fb-1 of data taken in 2011 by the ATLAS experiment at a center-of-mass energy √s=7 TeV, no evidence of such heavy vector-like quarks is observed above the expected Standard Model background. Limits on the heavy vector-like quark production cross section times branching ratio as a function of mass mQ are obtained. For a coupling κqQ=v/mQ, where v is the Higgs vacuum expectation value, 95% C.L. lower limits on the mass of a vector-like quark are set at 900 GeV and 760 GeV from CC and NC processes, respectively. © 2012 CERN.

Full Text

Duke Authors

Cited Authors

  • Aad, G; Abbott, BK; Abdallah, JM; Abdel Khalek, S; Abdelalim, AA; Abdesselam, A; Abdinov, OB; Abi, BA; Abolins, MA; AbouZeid, OS; Abramowicz, H; Abreu, H; Acerbi, E; Acharya, BS; Adamczyk, L; Adams, DL; Addy, TN; Adelman, J; Aderholz, M; 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, MSF; 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; Aliyev, MI; Allbrooke, BMM; Allport, PP; Allwood-Spiers, SE; Almond, JE; Aloisio, A; Alon, R; Alonso, A; Álvarez González, B; Alviggi, MG; Amako, K; Amaral, PB; 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; Andrieux, ML; 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; Archambault, JP; Arfaoui, S; Arguin, JF; Arik, EB

Published Date

  • May 30, 2012

Published In

Volume / Issue

  • 712 / 1-2

Start / End Page

  • 22 - 39

International Standard Serial Number (ISSN)

  • 0370-2693

Digital Object Identifier (DOI)

  • 10.1016/j.physletb.2012.03.082

Citation Source

  • Scopus