Angular decay coefficients of J/psi mesons at forward rapidity from p plus p collisions at root s=510 GeV

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Adare , A , Kim , D J , Novitzky , N , Rak , J & PHENIX Collaboration 2017 , ' Angular decay coefficients of J/psi mesons at forward rapidity from p plus p collisions at root s=510 GeV ' , Physical Review D , vol. 95 , no. 9 , 092003 . https://doi.org/10.1103/PhysRevD.95.092003

Title: Angular decay coefficients of J/psi mesons at forward rapidity from p plus p collisions at root s=510 GeV
Author: Adare, A.; Aidala, C.; Ajitanand, N. N.; Akiba, Y.; Akimoto, R.; Alfred, M.; Andrieux, V.; Aoki, K.; Apadula, N.; Aramaki, Y.; Asano, H.; Atomssa, E. T.; Awes, T. C.; Ayuso, C.; Azmoun, B.; Babintsev, V.; Bai, M.; Bandara, N. S.; Bannier, B.; Barish, K. N.; Bathe, S.; Bazilevsky, A.; Beaumier, M.; Beckman, S.; Belmont, R.; Berdnikov, A.; Berdnikov, Y.; Black, D.; Blau, D. S.; Boer, M.; Bok, J. S.; Bownes, E. K.; Boyle, K.; Brooks, M. L.; Bryslawskyj, J.; Buesching, H.; Bumazhnov, V.; Butler, C.; Campbell, S.; Roman, V. Canoa; Cervantes, R.; Chen, C. -H.; Chi, C. Y.; Chiu, M.; Choi, I. J.; Choi, J. B.; Chujo, T.; Kim, D. J.; Novitzky, N.; Rak, J.
Contributor: University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Helsinki Institute of Physics
Date: 2017-05-08
Number of pages: 13
Belongs to series: Physical Review D
ISSN: 2470-0010
URI: http://hdl.handle.net/10138/310136
Abstract: We report the first measurement of the full angular distribution for inclusive J/psi -> mu(+)mu(-) decays in p + p collisions at root s = 510 GeV. The measurements are made for J/psi transverse momentum 2 <p(T) <10 GeV /c and rapidity 1.2 <y <2.2 in the Helicity, Collins-Soper, and Gottfried-Jackson reference frames. In all frames the polar coefficient lambda theta is strongly negative at low p(T) and becomes close to zero at high p(T), while the azimuthal coefficient lambda phi is close to zero at low p(T), and becomes slightly negative at higher p(T). The frame-independent coefficient lambda is strongly negative at all p(T) in all frames. The data are compared to the theoretical predictions provided by nonrelativistic quantum chromodynamics models.
Subject: QCD CORRECTIONS
POLARIZATION
TEV
QUARKONIUM
TEVATRON
PSI
114 Physical sciences
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