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Measurement of the Transverse Momentum Distribution of W Bosons in pp Collisions at sqrt(s) = 7 TeV with the ATLAS Detector

G. Aad S. Albrand 1 M.L. Andrieux 1 B. Clement 1 J. Collot 1 S. Crépé-Renaudin 1 P.A. Delsart 1 J. Donini 1 J.Y. Hostachy 1 E. Laisne 1 F. Ledroit-Guillon 1 A. Lleres 1 A. Lucotte 1 F. Malek 1 P. Martin 1 F. Polci 1 J. Stark 1 X. Sun 1 B. Trocmé 1 C. Weydert 1 C. Biscarat 2 E. Cogneras 2 G. Rahal 2 H. Bachacou 3 F. Bauer 3 N. Besson 3 N.M. Bolnet 3 M. Boonekamp 3 L. Chevalier 3 J. Ernwein 3 A.I. Etienvre 3 A. Formica 3 L. Gauthier 3 F. Giraud 3 C. Guyot 3 S. Hassani 3 W. Kozanecki 3 E. Lancon 3 J.F. Laporte 3 E. Le Menedeu 3 M. Legendre 3 B. Mansoulie 3 J.-P. Meyer 3 N. Morange 3 E. Mountricha 3 Thi Hong 3 R. Nicolaidou 3 A. Ouraou 3 D.M. Pomarede 3 B. Resende 3 C.R. Royon 3 Ph. Schune 3 J. Schwindling 3 O. Simard 3 M. Virchaux 3 C. Xu 3 J. Yu 3 Emmanuel Busato 4 D. Calvet 4 S. Calvet 4 Reina Coromoto Camacho Toro 4 Diane Cinca 5 R. Febbraro 4 N. Ghodbane 4 C. Guicheney 4 D. Pallin 4 F. Podlyski 4 C. Santoni 4 L. P. Says 4 F. Vazeille 4 T. Beau 6 S. Bordoni 6 G. Calderini 6 A. Camard 6 P. Cavalleri 6 E. Chareyre 6 S. de Cecco 6 F. Derue 6 D. Imbault 6 M.W. Krasny 6 D. Lacour 6 B. Laforge 6 O. Le Dortz 6 J. Lellouch 6 G. Marchiori 6 I. Nikolic-Audit 6 J. Ocariz 6 M. Ridel 6 L. Roos 6 Ph. Schwemling 6 Timothée Theveneaux-Pelzer 6 S. Trincaz-Duvoid 6 T.N. Trinh 6 F. Vannucci 7 L. Aperio Bella 8 B. Aubert 8 N. Berger 8 J. Colas 8 L. Di Ciaccio 8 T.K.O. Doan 8 S. Elles 8 P. Ghez 8 M. Gouanère 8 C. Goy 8 T. Guillemin 8 L. Helary 8 T. Hryn'Ova 8 G. Ionescu 8 A. Jérémie 8 S. Jézéquel 8 M. Kataoka 8 J. Labbe 8 R. Lafaye 8 J. Leveque 8 N. Massol 8 P. Perrodo 8 H. Przysiezniak 8 G. Sauvage 8 E. Sauvan 8 T. Todorov 8 D. Tsionou 8 I. Wingerter-Seez 8 R. Zitoun 8 Y. Zolnierowski 8 H. Abreu 9 N. Andari 9 C. Arnault 9 E. Augé 9 P. Barrillon 9 M. Benoit 9 S. Binet 9 J.-B. Blanchard 9 C. Bourdarios 9 D. Breton 9 C. Collard 10 C. de la Taille 9 J.B. de Vivie de Regie 9 S. Diglio 9 L. Duflot 9 M. Escalier 9 A.C. Falou 9 L. Fayard 9 D. Fournier 9 J.-F. Grivaz 9 M. Heller 9 S. Henrot-Versillé 9 J. Hrivnac 9 L. Iconomidou-Fayard 9 J. Idarraga 9 M. Kado 9 A. Lounis 9 N. Makovec 9 P. Matricon 9 F. Niedercorn 9 L. Poggioli 9 P. Puzo 9 A. Renaud 9 D. Rousseau 9 X. Ruan 9, 11 G. Rybkin 9 J.B. Sauvan 9 J. Schaarschmidt 9 A.C. Schaffer 9 L. Serin 9 S. Simion 9 R. Tanaka 9 J.J. Veillet 9 I. Vukotic 9 F. Wicek 9 D. Zerwas 9 Zhiqing Zhang 9 S. Aoun 12 C. P. Bee 12 C. Benchouk 12 K. Bernardet 12 N. Bousson 12 J. C. Clémens 12 Y. Coadou 12 P. Delpierre 12 F. Djama 12 F. Etienne 12 L. Feligioni 12 F. Henry-Couannier 12 D. Hoffmann 12 F. Hubaut 12 E. B. F. G. Knoops 12 E. Le Guirriec 12 B. Li 12 E. Monnier 12 J. Odier 12 E. Petit 12 P. Pralavorio 12 Z. Qian 12 A. Rozanov 12 M. Talby 12 N. Tannoury 12 S. Tisserant 12 J. Toth 12 F. Touchard 12 L. Vacavant 12
Abstract : This paper describes a measurement of the W boson transverse momentum distribution using ATLAS pp collision data from the 2010 run of the LHC at sqrt(s) = 7 TeV, corresponding to an integrated luminosity of about 31 pb^-1. Events from both W -> e nu and W -> mu nu are used, and the transverse momentum of the W candidates is measured through the energy deposition in the calorimeter from the recoil of the W. The resulting distributions are unfolded to obtain the normalized differential cross sections as a function of the W boson transverse momentum. We present results for pTW < 300 GeV in the electron and muon channels as well as for their combination, and compare the combined results to the predictions of perturbative QCD and a selection of event generators.
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Submitted on : Monday, September 5, 2011 - 8:33:33 AM
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G. Aad, S. Albrand, M.L. Andrieux, B. Clement, J. Collot, et al.. Measurement of the Transverse Momentum Distribution of W Bosons in pp Collisions at sqrt(s) = 7 TeV with the ATLAS Detector. Physical Review D, American Physical Society, 2012, 85, pp.012005. ⟨10.1103/PhysRevD.85.012005⟩. ⟨in2p3-00618984⟩

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