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Measurement of hard double-parton interactions in W->lv+ 2 jet events at sqrt(s)=7 TeV with the ATLAS detector

G. Aad S. Aoun 1 M. Barbero 1 C. P. Bee 1 C. Bertella 1 N. Bousson 1 J. C. Clémens 1 Y. Coadou 1 F. Djama 1 F. Etienne 1 L. Feligioni 1 D. Hoffmann 1 F. Hubaut 1 E.B.F.G. Knoops 1 E. Le Guirriec 1 B. Li 1 J. Maurer 1 E. Monnier 1 Y. Nagai 1 J. Odier 1 P. Pralavorio 1 A. Rozanov 1 T. Serre 1 M. Talby 1 N. Tannoury 1 E. Tiouchichine 1 S. Tisserant 1 J. Toth 1 F. Touchard 1 M. Ughetto 1 L. Vacavant 1 C. Biscarat 2 G. Rahal 2 D. Boumediene 3 Emmanuel Busato 3 D. Calvet 3 S. Calvet 3 Reina Coromoto Camacho Toro 3 J. Donini 3 E. Dubreuil 3 Ph. Gris 3 N. Ghodbane 3 C. Guicheney 3 H. Liao 3 D. Pallin 3 Daniela Paredes Hernández 3 F. Podlyski 3 C. Santoni 3 Timothée Theveneaux-Pelzer 3 Loïc Valery 3 F. Vazeille 3 S. Albrand 4 Q. Buat 4 B. Clement 4 J. Collot 4 S. Crépé-Renaudin 4 B. Dechenaux 4 T. Delemontex 4 P.A. Delsart 4 M.H. Genest 4 J.Y. Hostachy 4 E. Laisne 4 F. Ledroit-Guillon 4 A. Lleres 4 A. Lucotte 4 F. Malek 4 J. Stark 4 X. Sun 4 B. Trocmé 4 C. Weydert 4 L. Aperio Bella 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 H. Keoshkerian 5 R. Lafaye 5 J. Leveque 5 V.P. Lombardo 5 M. Maeno 5 N. Massol 5 P. Perrodo 5 E. Petit 5 H. Przysiezniak 5 E. Richter-Was 5 G. Sauvage 5 E. Sauvan 1 M. Schwoerer 5 T. Todorov 5 D. Tsionou 5 I. Wingerter-Seez 5 R. Zitoun 5 S. Abdel Khalek 6 N. Andari 6 E. Augé 6 M. Benoit 6 S. Binet 6 C. Bourdarios 6 C. de la Taille 6 J.B. de Vivie de Regie 6 L. Duflot 6 M. Escalier 6 L. Fayard 6 D. Fournier 6 J.-F. Grivaz 6 S. Henrot-Versillé 6 J. Hrivnac 6 L. Iconomidou-Fayard 6 J. Idarraga 6 M. Kado 6 N. Lorenzo Martinez 6 A. Lounis 6 N. Makovec 6 F. Niedercorn 6 L. Poggioli 6 P. Puzo 6 A. Renaud 6 D. Rousseau 6 G. Rybkin 6 J.B. Sauvan 6 J. Schaarschmidt 6 A.C. Schaffer 6 L. Serin 6 S. Simion 6 R. Tanaka 6 M. Teinturier 6 J.J. Veillet 6 D. Zerwas 6 Zhiqing Zhang 6
Abstract : The production of W bosons in association with two jets in proton-proton collisions at a centre-of-mass energy of sqrt(s)=7 TeV has been analysed for the presence of double-parton interactions using data corresponding to an integrated luminosity of 36/pb, collected with the ATLAS detector at the LHC. The fraction of events arising from double-parton interactions, fDP(D) has been measured through the momentum balance between the two jets and amounts to fDP(D) = 0.08 +- 0.01 (stat.) +- 0.02 (sys) for jets with transverse momentum PT > 20 GeV and rapidity |y|<2.8. This corresponds to a measurement of the effective area parameter for hard double-parton interactions of \sigma_eff = 15 +- 3 (stat.) +5 -3 (sys.) mb.
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Submitted on : Wednesday, January 30, 2013 - 8:00:10 AM
Last modification on : Thursday, November 26, 2020 - 3:39:06 PM

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G. Aad, S. Aoun, M. Barbero, C. P. Bee, C. Bertella, et al.. Measurement of hard double-parton interactions in W->lv+ 2 jet events at sqrt(s)=7 TeV with the ATLAS detector. New Journal of Physics, Institute of Physics: Open Access Journals, 2013, 15, pp.033038. ⟨10.1088/1367-2630/15/3/033038⟩. ⟨in2p3-00782526⟩

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