The ALICE Collaboration has studied J/psi production in pp collisions at root 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 < y < 4, 2 < p(t) < 8 GeV/c, in the helicity and Collins-Soper reference frames. In both frames, the polarization parameters are compatible with zero, within uncertainties.

B. ABELEV, A. ABRAHANTES QUINTANA, D. ADAMOVÁ, A.M. ADARE, M.M. AGGARWAL, G. AGLIERI RINELLA, et al. (2012). J/Psi Polarization in pp Collisions at sqrt(s)= 7 TeV. PHYSICAL REVIEW LETTERS, 108(8), 1-10 [10.1103/PhysRevLett.108.082001].

J/Psi Polarization in pp Collisions at sqrt(s)= 7 TeV.

AGOSTINELLI, ANDREA;A. ALICI;ARCELLI, SILVIA;BASILE, MAURIZIO;BELLINI, FRANCESCA;CIFARELLI, LUISA;FALCHIERI, DAVIDE;GUERZONI, BARBARA;SCIOLI, GILDA;
2012

Abstract

The ALICE Collaboration has studied J/psi production in pp collisions at root 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 < y < 4, 2 < p(t) < 8 GeV/c, in the helicity and Collins-Soper reference frames. In both frames, the polarization parameters are compatible with zero, within uncertainties.
2012
B. ABELEV, A. ABRAHANTES QUINTANA, D. ADAMOVÁ, A.M. ADARE, M.M. AGGARWAL, G. AGLIERI RINELLA, et al. (2012). J/Psi Polarization in pp Collisions at sqrt(s)= 7 TeV. PHYSICAL REVIEW LETTERS, 108(8), 1-10 [10.1103/PhysRevLett.108.082001].
B. ABELEV; A. ABRAHANTES QUINTANA; D. ADAMOVÁ; A.M. ADARE; M.M. AGGARWAL; G. AGLIERI RINELLA; A.G. AGOCS; A. AGOSTINELLI; S. AGUILAR SALAZAR; Z. AHAMM...espandi
File in questo prodotto:
Eventuali allegati, non sono esposti

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/118448
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 139
  • ???jsp.display-item.citation.isi??? 108
social impact