Measurement of the production cross section of prompt J/psi mesons in association with a W boson in pp collisions at sqrt{s}=7 TeV with the ATLAS detector - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Journal Articles Journal of High Energy Physics Year : 2014

Measurement of the production cross section of prompt J/psi mesons in association with a W boson in pp collisions at sqrt{s}=7 TeV with the ATLAS detector

G. Aad , S. Albrand (1) , J. Brown (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) , B.T. Le (1) , F. Ledroit-Guillon (1) , A. Lleres (1) , A. Lucotte (1) , F. Malek (1) , C. Monini (1) , J. Stark (1) , X. Sun (1) , B. Trocmé (1) , G. Rahal (2) , S. Abdel Khalek (3) , E. Augé (3) , A. Bassalat (3) , S. Binet (3) , C. Bourdarios (3) , C. de La Taille (3) , J.B. de Vivie de Regie (3) , L. Duflot (3) , M. Escalier (3) , L. Fayard (3) , D. Fournier (3) , J.-F. Grivaz (3) , T. Guillemin (3) , S. Henrot-Versillé (3) , J. Hrivnac (3) , L. Iconomidou-Fayard (3) , J. Idarraga (3) , M. Kado (3) , N. Lorenzo Martinez (3) , A. Lounis (3) , N. Makovec (3) , L. Poggioli (3) , P. Puzo (3) , A. Renaud (3) , D. Rousseau (3) , G. Rybkin (3) , J.B. Sauvan (3) , J. Schaarschmidt (3) , A.C. Schaffer (3) , E. Scifo (3) , L. Serin (3) , S. Simion (3) , R. Tanaka (3) , H.L. Tran (3) , D. Zerwas (3) , Zhiqing Zhang (3) , L. Alio (4) , M. Barbero (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) , Y. Nagai (4) , J. Odier (4) , P. Pralavorio (4) , A. Rozanov (4) , T. Serre (4) , M. Talby (4) , N. Tannoury (4) , E. Tiouchichine (4) , S. Tisserant (4) , J. Toth (4) , F. Touchard (4) , M. Ughetto (4) , L. Vacavant (4) , D. Boumediene (5) , Emmanuel Busato (5) , D. Calvet (5) , S. Calvet (5) , J. Donini (5) , E. Dubreuil (5) , N. Ghodbane (5) , Ph. Gris (5) , C. Guicheney (5) , H. Liao (5) , D. Pallin (5) , Daniela Paredes Hernández (5) , F. Podlyski (5) , C. Santoni (5) , Timothée Theveneaux-Pelzer (5) , Loïc Valery (5) , F. Vazeille (5) , N. Berger (6) , J. Colas (6) , M. Delmastro (6) , L. Di Ciaccio (6) , T.K.O. Doan (6) , S. Elles (6) , C. Goy (6) , T. Hryn'Ova (6) , S. Jézéquel (6) , H. Keoshkerian (6) , R. Lafaye (6) , J. Leveque (6) , V.P. Lombardo (6) , N. Massol (6) , M. Maeno (6) , E. Petit (6) , H. Przysiezniak (6) , G. Sauvage (6) , E. Sauvan (6) , M. Schwoerer (6) , T. Todorov (6) , I. Wingerter-Seez (6) , R. Zitoun (6) , O. Simard (6)
G. Aad
E. Augé
D. Rousseau
Zhiqing Zhang
  • Function : Author
  • PersonId : 829631
Y. Coadou
E. Monnier
S. Calvet
N. Berger
C. Goy
T. Hryn'Ova

Abstract

The process pp--> W + J/psi provides a powerful probe of the production mechanism of charmonium in hadronic collisions, and is also sensitive to multiple parton interactions in the colliding protons. Using the 2011 ATLAS dataset of 4.5 fb-1 of sqrt{s} = 7 TeV pp collisions at the LHC, the first observation is made of the production of W + prompt J/psi events in hadronic collisions, using W-->mu+nu and J/psi-->mu+mu. A yield of 27.4+7.5-6.5 W + prompt J/psi events is observed, with a statistical significance of 5.1 sigma. The production rate as a ratio to the inclusive W boson production rate is measured, and the double parton scattering contribution to the cross section is estimated.

Dates and versions

in2p3-00929826 , version 1 (14-01-2014)

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Cite

G. Aad, S. Albrand, J. Brown, Q. Buat, B. Clement, et al.. Measurement of the production cross section of prompt J/psi mesons in association with a W boson in pp collisions at sqrt{s}=7 TeV with the ATLAS detector. Journal of High Energy Physics, 2014, 04, pp.172. ⟨10.1007/JHEP04(2014)172⟩. ⟨in2p3-00929826⟩
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