Measurement of total and differential $W^+W^-$ production cross sections in proton-proton collisions at $\sqrt{s}=$ 8 TeV with the ATLAS detector and limits on anomalous triple-gauge-boson couplings

G. Aad 1 L. Alio 1 M. Barbero 1 Y. Coadou 1 C. Diaconu 1 S. Diglio 1 F. Djama 1 L. Feligioni 1 J. Gao 1 G.D. Hallewell 1 F. Hubaut 1 S.J. Kahn 1 E. B. F. G. Knoops 1 E. Le Guirriec 1 J. Liu 1 K. Liu 1 D. Madaffari 1 K. Mochizuki 1 E. Monnier 1 S. Muanza 1 Y. Nagay 1 E. Nagy 1 P. Pralavorio 1 Y. Rodina 1 A. Rozanov 1 M. Talby 1 T. Theveneaux-Pelzer 1 R.E. Ticse Torres 1 E. Tiouchichine 1 S. Tisserant 1 J. Toth 1 F. Touchard 1 L. Vacavant 1 G. Rahal 2 H. Bachacou 3 F. Bauer 3 N. Besson 3 J.-B. Blanchard 3 M. Boonekamp 3 A. Calandri 1 L. Chevalier M. Dano Hoffmann F. Deliot 3 A.I. Etienvre 3 A. Formica 3 P.F. Giraud 3 J. Goncalves Pinto Firmino Da Costa 3 C. Guyot 3 R. Hanna 3 S. Hassani 3 O. Kivernyk W. Kozanecki 3 R. Kukla E. Lancon J.F. Laporte 3 C. Maiani 3 B. Mansoulie 3 J-P. Meyer 3 R. Nicolaidou 3 A. Ouraou 3 E. Protopapadaki 3 C.R. Royon 3 M. Saimpert 3 L. L. Schoffel 3 Ph. Schune 3 Ph. Schwemling 3 J. Schwindling 3 S. Albrand 4 J. Collot 4 S. Crépé-Renaudin 4 P.A. Delsart 4 C. Gabaldon 4 M.H. Genest 4 J.Y. Hostachy 4 F. Ledroit-Guillon 4 A. Lleres 4 A. Lucotte 4 F. Malek 4 C. Monini 4 J. Stark 4 B. Trocmé 4 M. Wu 4 D. Boumediene 5 E. Busato 5 D. Calvet 5 S. Calvet 5 J. Donini 5 E. Dubreuil 5 G. Gilles 5 Ph. Gris 5 H. Liao 5 R. Madar 5 D. Pallin 5 S.M. Romano Saez 5 C. Santoni 5 D. Simon 5 F. Vazeille 5 Z. Barnovska 6 N. Berger 6 M. Delmastro 6 L. Di Ciaccio 6 S. Elles 6 K. Grevtsov 6 T. Hryn’ova 6 S. Jézéquel 6 I. Koletsou 6 R. Lafaye 6 J. Levêque 6 P. Mastrandea 6 G. Sauvage 6 E. Sauvan 6 O. Simard 6 T. Todorov 6 I. Wingerter-Seez 6 E. Yatsenko 6 M.K. Ayoub 7 A. Bassalat 7 S. Binet 7 C. Becot 7 C. Bourdarios 7 J.B. de Vivie De Regie 7 D. Delgove 7 L. Duflot 7 M. Escalier 7 L. Fayard 7 D. Fournier 7 E.L. Gkougkousis 7 J.-F. Grivaz 7 T. Guillemin 7 F. Hariri 7 S. Henrot-Versille 7 J. Hrivnac 7 L. Iconomidou-Fayard 7 M. Kado 7 A. Lounis 7 N. Makovec 7 N. Morange 7 C. Nellist 7 P. Petroff 7 L. Poggioli 7 P. Puzo 7 A. Renaud 7 G. Rybkin 7 D. Rousseau 7 A.C. Schaffer 7 L. Serin 7 E. Scifo 7 S. Simion 7 R. Tanaka D. Zerwas 7 Zhongkai Zhang 7 Y. Zhao 7
Abstract : The production of $W$ boson pairs in proton-proton collisions at $\sqrt{s}=$ 8 TeV is studied using data corresponding to 20.3 fb$^{-1}$ of integrated luminosity collected by the ATLAS detector during 2012 at the CERN Large Hadron Collider. The $W$ bosons are reconstructed using their leptonic decays into electrons or muons and neutrinos. Events with reconstructed jets are not included in the candidate event sample. A total of 6636 $WW$ candidate events are observed. Measurements are performed in fiducial regions closely approximating the detector acceptance. The integrated measurement is corrected for all acceptance effects and for the $W$ branching fractions to leptons in order to obtain the total $WW$ production cross section, which is found to be 71.1$\pm1.1$(stat)$^{+5.7}_{-5.0}$(syst)$\pm1.4$ pb. This agrees with the next-to-next-to-leading-order Standard Model prediction of 63.2$^{+1.6}_{-1.4}$(scale)$\pm1.2$(PDF) pb. Fiducial differential cross sections are measured as a function of each of six kinematic variables. The distribution of the transverse momentum of the leading lepton is used to set limits on anomalous triple-gauge-boson couplings.
Type de document :
Article dans une revue
Journal of High Energy Physics, Springer Verlag (Germany), 2016, 09, pp.029. 〈10.1007/JHEP09(2016)029〉
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Soumis le : mardi 8 mars 2016 - 09:17:17
Dernière modification le : vendredi 31 août 2018 - 16:13:10

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G. Aad, L. Alio, M. Barbero, Y. Coadou, C. Diaconu, et al.. Measurement of total and differential $W^+W^-$ production cross sections in proton-proton collisions at $\sqrt{s}=$ 8 TeV with the ATLAS detector and limits on anomalous triple-gauge-boson couplings. Journal of High Energy Physics, Springer Verlag (Germany), 2016, 09, pp.029. 〈10.1007/JHEP09(2016)029〉. 〈in2p3-01284732〉

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