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Measurement of W<sup>±</sup>Z production in proton-proton collisions At √s = 7 TeV with the ATLAS detector

Abstract:

A study of W ± Z production in proton-proton collisions at √s = 7 TeV is presented using data corresponding to an integrated luminosity of 4.6 fb−1 collected with the ATLAS detector at the Large Hadron Collider in 2011. In total, 317 candidates, with a background expectation of 68 ± 10 events, are observed in double-leptonic decay final states with electrons, muons and missing transverse momentum. The total cross-section is determined to be be σtotWZ = 19.0+1.4−1.3 (stat.) ± 0.9(syst.) ± 0.4(lumi.) pb, consistent with the Standard Model expectation of 17.6+1.1−1.0 pb. Limits on anomalous triple gauge boson couplings are derived using the transverse momentum spectrum of Z bosons in the selected events. The cross-section is also presented as a function of Z boson transverse momentum and diboson invariant mass.

Año de publicación:

2012

Keywords:

    Fuente:

    scopusscopus

    Tipo de documento:

    Article

    Estado:

    Acceso abierto

    Áreas de conocimiento:

    • Física de partículas

    Áreas temáticas:

    • Física moderna

    Contribuidores:

    Aloisio A.Aloisio A.
    Anders C.F.Anders C.F.
    Antonov A.Antonov A.
    Aielli G.Aielli G.
    Albert J.Albert J.
    Ammosov V.V.Ammosov V.V.
    Allwood-Spiers S.E.Allwood-Spiers S.E.
    Aoki M.Aoki M.
    Andeen T.Andeen T.
    Arik M.Arik M.
    Gonzalez B.A.Gonzalez B.A.
    Almond J.Almond J.
    Alam M.S.Alam M.S.
    Abbott B.Abbott B.
    Allbrooke B.M.M.Allbrooke B.M.M.
    Agustoni M.Agustoni M.
    Alhroob M.Alhroob M.
    Alonso A.Alonso A.
    Alviggi M.G.Alviggi M.G.
    Anderson K.J.Anderson K.J.
    Acharya B.S.Acharya B.S.
    Adomeit S.Adomeit S.
    Alonso F.Alonso F.
    Abajyan T.Abajyan T.
    Adams D.L.Adams D.L.
    Anduaga X.S.Anduaga X.S.
    Ahles F.Ahles F.
    Amram N.Amram N.
    Aefsky S.Aefsky S.
    Aharrouche M.Aharrouche M.
    Arai Y.Arai Y.
    Alexander G.Alexander G.
    Ahmad A.Ahmad A.
    Allport P.P.Allport P.P.
    Angerami A.Angerami A.
    Alexandre G.Alexandre G.
    Addy T.N.Addy T.N.
    Aoun S.Aoun S.
    Alexopoulos T.Alexopoulos T.
    Aad G.Aad G.
    Abreu H.Abreu H.
    Ancu L.S.Ancu L.S.
    Arfaoui S.Arfaoui S.
    Alon R.Alon R.
    Andari N.Andari N.
    Anisenkov A.V.Anisenkov A.V.
    Akimov A.V.Akimov A.V.
    Abi B.Abi B.
    Javier GarciaJavier Garcia
    Arabidze G.Arabidze G.
    Akimoto G.Akimoto G.
    Dos Santos S.P.A.Dos Santos S.P.A.
    Adelman J.Adelman J.
    Bella L.A.Bella L.A.
    Annovi A.Annovi A.
    Apolle R.Apolle R.
    Saavedra J.A.A.Saavedra J.A.A.
    Arce A.T.H.Arce A.T.H.
    Anulli F.Anulli F.
    Antonaki A.Antonaki A.
    Arik E.Arik E.
    Adamczyk L.Adamczyk L.
    Acerbi E.Acerbi E.
    Abdallah J.Abdallah J.
    Alam M.A.Alam M.A.
    Aracena I.Aracena I.
    Aleksandrov I.N.Aleksandrov I.N.
    Anghinolfi F.Anghinolfi F.
    Anastopoulos C.Anastopoulos C.
    Anjos N.Anjos N.
    Andrieux M.L.Andrieux M.L.
    Alimonti G.Alimonti G.
    Amelung C.Amelung C.
    Ahsan M.Ahsan M.
    Abdinov O.Abdinov O.
    Zeid O.S.A.Zeid O.S.A.
    Ahlen S.P.Ahlen S.P.
    Andrei V.Andrei V.
    Antonelli M.Antonelli M.
    Antos J.Antos J.
    Abdelalim A.A.Abdelalim A.A.
    Aliev M.Aliev M.
    Adye T.Adye T.
    Aben R.Aben R.
    Abolins M.Abolins M.
    Alexa C.Alexa C.
    Arguin J.F.Arguin J.F.
    Khalek S.A.Khalek S.A.
    Alessandria F.Alessandria F.
    Alison J.Alison J.
    Åkesson T.P.A.Åkesson T.P.A.
    Anders G.Anders G.
    Anger P.Anger P.
    Abramowicz H.Abramowicz H.
    Amorim A.Amorim A.
    Amako K.Amako K.
    Albrand S.Albrand S.
    Akdogan T.Akdogan T.
    Andreazza A.Andreazza A.
    Adragna P.Adragna P.
    Aleksa M.Aleksa M.