Angular decay coefficients of J/ψ mesons at forward rapidity from p+p collisions at √s=510 GeV

Adare, A. and Makek, Mihael and Vukman, Nikola and Zou, L. (PHENIX Collaboration) (2017) Angular decay coefficients of J/ψ mesons at forward rapidity from p+p collisions at √s=510 GeV. Physical Review D, 95 (9). pp. 92003-13. ISSN 1550-7998

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Abstract

We report the first measurement of the full angular distribution for inclusive J/ψ→μ+μ− decays in p+p collisions at √s=510 GeV. The measurements are made for J/ψ transverse momentum 2<pT<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 λθ is strongly negative at low pT and becomes close to zero at high pT, while the azimuthal coefficient λϕ is close to zero at low pT, and becomes slightly negative at higher pT. The frame-independent coefficient ˜λ is strongly negative at all pT in all frames. The data are compared to the theoretical predictions provided by nonrelativistic quantum chromodynamics models.

Item Type: Article
Date: 8 May 2017
Subjects: NATURAL SCIENCES > Physics
Additional Information: © 2017 American Physical Society. Received 21 December 2016. Published 8 May 2017.
Divisions: Faculty of Science > Department of Physics
Publisher: American Physical Society
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 29 Sep 2017 14:07
Last Modified: 29 Sep 2017 14:07
URI: http://digre.pmf.unizg.hr/id/eprint/5596

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