Measurements of the associated production of a Z boson and b jets in pp collisions at sqrt(s) = 8 TeV

V. Khachatryan M. Besançon 1 F. Couderc 1 M. Dejardin 1 D. Denegri 1 B. Fabbro 1 J.L. Faure 1 C. Favaro 1 F. Ferri 1 S. Ganjour 1 A. Givernaud 1 P. Gras 1 G. Hamel De Monchenault 1 P. Jarry 1 E. Locci 1 M. Machet 1 J. Malcles 1 J. Rander 1 A. Rosowsky 1 M. Titov 1 A. Zghiche 1 A. Abdulsalam 2 I. Antropov 2 S. Baffioni 2 F. Beaudette 2 P. Busson 2 L. Cadamuro 2 E. Chapon 2 C. Charlot 2 O. Davignon 2 L. Dobrzynski 2 R. Granier De Cassagnac 2 M. Jo 2 S. Lisniak 2 P. Miné 2 I.N. Naranjo 2 M. Nguyen 2 C. Ochando 2 G. Ortona 2 P. Paganini 2 P. Pigard 2 S. Regnard 2 R. Salerno 2 Y. Sirois 2 T. Strebler 2 Y. Yilmaz 2 A. Zabi 2 J.-L. Agram 3 J. Andrea 3 A. Aubin 3 D. Bloch 3 J.-M. Brom 3 M. Buttignol 3 E.C. Chabert 3 N. Chanon 3 C. Collard 3 E. Conte 3 X. Coubez 3 J.-C. Fontaine 3 D. Gelé 3 U. Goerlach 3 C. Goetzmann 3 A.-C. Le Bihan 3 J.A. Merlin 3 K. Skovpen 3 P. Van Hove 3 S. Gadrat 4 S. Beauceron 5 C. Bernet 5 G. Boudoul 5 E. Bouvier 5 C.A. Carrillo Montoya 5 R. Chierici 5 D. Contardo 5 B. Courbon 5 P. Depasse 5 H. El Mamouni 5 J. Fan 5 J. Fay 5 S. Gascon 5 M. Gouzevitch 5 B. Ille 5 F. Lagarde 5 I.B. Laktineh 5 M. Lethuillier 5 L. Mirabito 5 A.L. Pequegnot 5 S. Perries 5 A. Popov 5 J.D. Ruiz Alvarez 5 D. Sabes 5 V. Sordini 5 M. Vander Donckt 5 P. Verdier 5 S. Viret 5
1 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers
2 LLR - Laboratoire Leprince-Ringuet
3 DRS-IPHC - Département Recherches Subatomiques
4 CC-IN2P3 - Centre de Calcul de l'IN2P3
5 IPNL - Institut de Physique Nucléaire de Lyon
Abstract : Measurements of the associated production of a Z boson with at least one jet originating from a b quark in proton-proton collisions at sqrt(s) = 8 TeV are presented. Differential cross sections are measured with data collected by the CMS experiment corresponding to an integrated luminosity of 19.8 inverse femtobarns. Z bosons are reconstructed through their decays to electrons and muons. Cross sections are measured as a function of observables characterizing the kinematics of the b jet and the Z boson. Ratios of differential cross sections for the associated production with at least one b jet to the associated production with any jet are also presented. The production of a Z boson with two b jets is investigated, and differential cross sections are measured for the dijet system. Results are compared to theoretical predictions, testing two different flavour schemes for the choice of initial-state partons.
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Article dans une revue
European Physical Journal C: Particles and Fields, Springer Verlag (Germany), 2017, 77, pp.751. 〈10.1140/epjc/s10052-017-5140-y〉
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http://hal.in2p3.fr/in2p3-01400577
Contributeur : Dominique Girod <>
Soumis le : mardi 22 novembre 2016 - 10:53:03
Dernière modification le : jeudi 10 mai 2018 - 01:58:52

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V. Khachatryan, M. Besançon, F. Couderc, M. Dejardin, D. Denegri, et al.. Measurements of the associated production of a Z boson and b jets in pp collisions at sqrt(s) = 8 TeV. European Physical Journal C: Particles and Fields, Springer Verlag (Germany), 2017, 77, pp.751. 〈10.1140/epjc/s10052-017-5140-y〉. 〈in2p3-01400577〉

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