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Measurement of WZ production in proton-proton collisions at sqrt(s) = 7 TeV with the ATLAS detector

G. Aad S. Albrand 1 M.L. Andrieux 1 Q. Buat 1 B. Clement 1 J. Collot 1 S. Crépé-Renaudin 1 B. Dechenaux 1 T. Delemontex 1 P.A. Delsart 1 M.H. Genest 1 J.Y. Hostachy 1 E. Laisne 1 F. Ledroit-Guillon 1 A. Lleres 1 A. Lucotte 1 F. Malek 1 J. Stark 1 X. Sun 1 B. Trocmé 1 J. Wang 1 C. Weydert 1 C. Biscarat 2 E. Cogneras 2 G. Rahal 2 F. Vannucci 3 S. Aoun 4 C. P. Bee 4 C. Bertella 4 N. Bousson 4 J. C. Clémens 4 Y. Coadou 4 F. Djama 4 F. Etienne 4 L. Feligioni 4 D. Hoffmann 4 F. Hubaut 4 E. B. F. G. Knoops 4 E. Le Guirriec 4 B. Li 4 J. Maurer 4 E. Monnier 4 J. Odier 4 P. Pralavorio 4 A. Rozanov 4 M. Talby 4 N. Tannoury 4 S. Tisserant 4 J. Toth 4 F. Touchard 4 L. Vacavant 4 L. Aperio Bella 5 B. Aubert 5 N. Berger 5 J. Colas 5 M. Delmastro 5 L. Di Ciaccio 5 T.K.O. Doan 5 S. Elles 5 C. Goy 5 T. Hryn'Ova 5 S. Jézéquel 5 M. Kataoka 5 J. Labbe 5 R. Lafaye 5 J. Leveque 5 V.P. Lombardo 5 N. Massol 5 P. Perrodo 5 E. Petit 5 H. Przysiezniak 5 E. Richter-Was 5 G. Sauvage 5 E. Sauvan 5 M. Schwoerer 5 T. Todorov 5 D. Tsionou 5 I. Wingerter-Seez 5 R. Zitoun 5 D. Boumediene 6 Emmanuel Busato 6 D. Calvet 6 S. Calvet 6 Reina Coromoto Camacho Toro 6 Diane Cinca 7 J. Donini 6 R. Febbraro 6 N. Ghodbane 6 Ph. Gris 6 C. Guicheney 6 H. Liao 6 D. Pallin 6 Daniela Paredes Hernández 6 F. Podlyski 6 C. Santoni 6 F. Vazeille 6 S. Abdel Khalek 8 H. Abreu 8 N. Andari 8 C. Arnault 8 E. Augé 8 P. Barrillon 8 M. Benoit 8 S. Binet 8 C. Bourdarios 8 C. de la Taille 8 J.B. de Vivie de Regie 8 L. Duflot 8 M. Escalier 8 L. Fayard 8 D. Fournier 8 J.-F. Grivaz 8 S. Henrot-Versillé 8 J. Hrivnac 8 L. Iconomidou-Fayard 8 J. Idarraga 8 M. Kado 8 N. Lorenzo Martinez 8 A. Lounis 8 N. Makovec 8 P. Matricon 8 F. Niedercorn 8 L. Poggioli 8 P. Puzo 8 A. Renaud 8 D. Rousseau 8 G. Rybkin 8 J.B. Sauvan 8 J. Schaarschmidt 8 A.C. Schaffer 8 L. Serin 8 S. Simion 8 R. Tanaka 8 M. Teinturier 8 J.J. Veillet 8 I. Vukotic 8 F. Wicek 8 D. Zerwas 8
Abstract : A study of WZ production in proton-proton collisions at sqrt(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 sigma_WZ(tot) = 19.0+1.4/-1.3(stat.)+/-0.9(cyst.)+/-0.4(lump.) 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.
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Submitted on : Wednesday, August 8, 2012 - 8:32:10 AM
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G. Aad, S. Albrand, M.L. Andrieux, Q. Buat, B. Clement, et al.. Measurement of WZ production in proton-proton collisions at sqrt(s) = 7 TeV with the ATLAS detector. European Physical Journal C: Particles and Fields, Springer Verlag (Germany), 2012, 72, pp.2173. ⟨10.1140/epjc/s10052-012-2173-0⟩. ⟨in2p3-00723194⟩

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