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J/ψ polarization in pp collisions at âs=7 TeV.

Abelev, B; Abrahantes Quintana, A; Adamová, D; Adare, A M; Aggarwal, M M; Aglieri Rinella, G; Agocs, A G; Agostinelli, A; Aguilar Salazar, S; Ahammed, Z; Ahmad, N; Ahmad Masoodi, A; Ahn, S U; Akindinov, A; Aleksandrov, D; Alessandro, B; AlfaroMolina, R; Alici, A; Alkin, A; Almaráz Aviña, E; Alt, T; Altini, V; Altinpinar, S; Altsybeev, I; Andrei, C; Andronic, A; Anguelov, V; Anson, C; Anticic, T; Antinori, F; Antonioli, P; Aphecetche, L; Appelshäuser, H; Arbor, N; Arcelli, S; Arend, A; Armesto, N; Arnaldi, R; Aronsson, T; Arsene, I C; Arslandok, M; Asryan, A; Augustinus, A; Averbeck, R; Awes, T C; Aystö, J; Azmi, M D; Bach, M; Badalà, A; Baek, Y W.

Phys Rev Lett ; 108(8): 082001, 2012 Feb 24.

Artigo em Inglês | MEDLINE | ID: mdl-22463524

RESUMO

The ALICE Collaboration has studied J/ψ production in pp collisions at âs=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/ψ polarization parameters λ(Î¸) and λ(φ) were obtained. The study was performed in the kinematic region 2.5

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