J/psi polarization in pp collisions at sqrt(s)=7 TeV

B. Abelev; N. Arbor; G. Conesa Balbastre; J. Faivre; C. Furget; R. Guernane; S. Kox; Y. Mao; J.S. Real; R. Vernet; L. Aphecetche; Guillaume Batigne; M. Bregant; H. Delagrange; O. Driga; M. Estienne; M. Germain; A. Lardeux; F. Lefèvre; M. Lenhardt; L. Luquin; G. Martınez Garcıa; A. Mas; A. Matyja; P. Pillot; Y. Schutz; D. Stocco; I. Belikov; J.P. Coffin; Z. Conesa Del Valle; B. Hippolyte; S. Jangal; C. Kuhn; A. Maire; A. Michalon; C. Roy; S. Senyukov; R. Wan; B. Cheynis; L. Ducroux; J.-Y. Grossiord; M. Guilbaud; L. Massacrier; R. Tieulent; A. Uras; Y. Zoccarato; Sang Un Ahn; Y.W. Baek; A. Baldit; V. Barret; N. Bastid; P. Crochet; P. Dupieux; R. Ichou; X. Lopez; F. Manso; M. Marchisone; S. Porteboeuf-Houssais; P. Rosnet; B. Vulpescu; X. Zhang; Y. le Bornec; J. D. tapia Takaki; L. valencia Palomo; B. Espagnon; C. Suire; A. Baldisseri; H. Borel; Javier Castillo Castellano; J. -L. Charvet; C. Geuna; S. Pal; A. Rakotozafindrabe

doi:10.1103/PhysRevLett.108.082001

J/psi polarization in pp collisions at sqrt(s)=7 TeV

B. Abelev N. Arbor ¹ G. Conesa Balbastre ¹ J. Faivre ¹ C. Furget ¹ R. Guernane ¹ S. Kox ¹ Y. Mao ¹ J.S. Real ¹ R. Vernet ² L. Aphecetche ³ Guillaume Batigne ³ M. Bregant ³ H. Delagrange ³ O. Driga ³ M. Estienne ³ M. Germain ³ A. Lardeux ³ F. Lefèvre ³ M. Lenhardt ³ L. Luquin ³ G. Martınez Garcıa ³ A. Mas ³ A. Matyja ³ P. Pillot ³ Y. Schutz ³ D. Stocco ³ I. Belikov ⁴ J.P. Coffin ⁴ Z. Conesa Del Valle ⁴ B. Hippolyte ⁴ S. Jangal ⁴ C. Kuhn ⁴ A. Maire ⁴ A. Michalon ⁴ C. Roy ⁴ S. Senyukov ⁴ R. Wan ⁴ B. Cheynis ⁵ L. Ducroux ⁵ J.-Y. Grossiord ⁶ M. Guilbaud ⁵ L. Massacrier ⁵ R. Tieulent ⁵ A. Uras ⁵ Y. Zoccarato ⁵ Sang Un Ahn ⁷ Y.W. Baek ⁸ A. Baldit ⁸ V. Barret ⁸ N. Bastid ⁸ P. Crochet ⁸ P. Dupieux ⁸ R. Ichou ⁸ X. Lopez ⁸ F. Manso ⁸ M. Marchisone ⁸ S. Porteboeuf-Houssais ⁸ P. Rosnet ⁸ B. Vulpescu ⁸ X. Zhang ⁸ Y. le Bornec ⁹ J. D. tapia Takaki ⁹ L. valencia Palomo ⁹ B. Espagnon ⁹ C. Suire ⁹ A. Baldisseri ¹⁰ H. Borel ¹⁰ Javier Castillo Castellano ¹⁰ J. -L. Charvet ¹⁰ C. Geuna ¹⁰ S. Pal ¹⁰ A. Rakotozafindrabe ¹⁰

1 LPSC - Laboratoire de Physique Subatomique et de Cosmologie

2 CC-IN2P3 - Centre de Calcul de l'IN2P3

3 SUBATECH - Laboratoire SUBATECH Nantes

4 DRS-IPHC - Département Recherches Subatomiques

5 IPNL - Institut de Physique Nucléaire de Lyon

6 Alice

IPNL - Institut de Physique Nucléaire de Lyon

7 Laboratoire de Physique Corpusculaire

LPC - Laboratoire de Physique Corpusculaire [Clermont-Ferrand]

8 LPC - Laboratoire de Physique Corpusculaire [Clermont-Ferrand]

9 IPNO - Institut de Physique Nucléaire d'Orsay

10 Cea Saclay, IRFU, Service de Physique Nucléaire

Abstract : The ALICE Collaboration has studied J/psi production in pp collisions at sqrt(s)=7 TeV at the LHC through its muon pair decay. The polar and azimuthal angle distributions of the decay muons were measured, and results on the J/psi polarization parameters lambda_theta and lambda_phi were obtained. The study was performed in the kinematic region 2.5

Document type :

Journal articles

Physical Review Letters, American Physical Society, 2012, 108, pp.082001. <10.1103/PhysRevLett.108.082001>

Domain :

Physics / High Energy Physics - Experiment

http://hal.in2p3.fr/in2p3-00639319
Contributor : Emmanuelle Vernay <>
Submitted on : Tuesday, November 8, 2011 - 5:13:05 PM
Last modification on : Friday, January 16, 2015 - 1:04:33 AM

J/psi polarization in pp collisions at sqrt(s)=7 TeV

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