J/psi Polarization in pp Collisions at root s=7 TeV

Journal Article

2012

Permanent link to this Item
http://hdl.handle.net/11427/34648
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AbelevB_J_psi_Polarizat_2012.pdf (286.09 KB)
Authors
Abelev, B
Abrahantes Quintana, A
Ahmad, N
Ahmad Masoodi, A
Ahn, S U
Akindinov, A
Aleksandrov, D
Alessandro, B
Alfaro Molina, R
Alici, A
Alkin, A
Almaráz Aviña, E
Adamová, D
Alt, T
Altini, V
Altinpinar, S
Altsybeev, I
Andrei, C
Andronic, A
Anguelov, V
Anson, C
Antičić, T
Antinori, F
Adare, A M
Antonioli, P
Aphecetche, L
Aggarwal, M M
Aglieri Rinella, G
Agocs, A G
Agostinelli, A
Aguilar Salazar, S
Ahammed, Z
Journal Title

Physical Review Letters

Link to Journal
https://dx.doi.org/10.1103/PhysRevLett.108.082001
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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.
Description
Keywords
P(P)Over-Bar Collisions
Heavy Quarkonium
Qcd Corrections
S=1.8 Tev
Prompt
Article

Reference:

Abelev, B., Abrahantes Quintana, A., Adamová, D., Adare, A.M., Aggarwal, M.M., Aglieri Rinella, G., Agocs, A.G. & Agostinelli, A. et al. 2012. J/psi Polarization in pp Collisions at root s=7 TeV. Physical Review Letters. 108(8):174 - 177. http://hdl.handle.net/11427/34648

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