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

(PHENIX Collaboration)

Research output: Contribution to journalArticle

1 Citation (Scopus)

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.

Original languageEnglish
Article number092003
JournalPhysical Review D
Volume95
Issue number9
DOIs
Publication statusPublished - 2017 May 1

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mesons
collisions
decay
coefficients
transverse momentum
angular distribution
quantum chromodynamics
predictions

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Angular decay coefficients of J /ψ mesons at forward rapidity from p+p collisions at s =510 GeV. / (PHENIX Collaboration).

In: Physical Review D, Vol. 95, No. 9, 092003, 01.05.2017.

Research output: Contribution to journalArticle

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