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Angular decay coefficients of J /ψ mesons at forward rapidity from p+p collisions at √s =510 GeV
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SYSNO ASEP 0519183 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Angular decay coefficients of J /ψ mesons at forward rapidity from p+p collisions at √s =510 GeV Author(s) Adare, A. (US)
Aidala, C. (US)
Ajitanand, N.N. (US)
Vrba, Václav (FZU-D) RID, ORCIDNumber of authors 396 Article number 092003 Source Title Physical Review D. - : American Physical Society - ISSN 2470-0010
Roč. 95, č. 9 (2017), s. 1-13Number of pages 13 s. Language eng - English Country US - United States Keywords J/psi(3100): transverse momentum ; helicity ; numerical calculations: Monte Carlo ; experimental results ; 510 GeV-cms Subject RIV BF - Elementary Particles and High Energy Physics OECD category Particles and field physics Method of publishing Limited access Institutional support FZU-D - RVO:68378271 UT WOS 000401231900001 EID SCOPUS 85020079986 DOI 10.1103/PhysRevD.95.092003 Annotation 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.
Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2020 Electronic address https://doi.org/10.1103/physrevd.95.092003
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