Measurements of double-helicity asymmetries in inclusive J /ψ production in longitudinally polarized p+p collisions at s =510 GeV

Summary, in English

We report the double-helicity asymmetry, ALLJ/ψ, in inclusive J/ψ production at forward rapidity as a function of transverse momentum pT and rapidity |y|. The data analyzed were taken during s=510 GeV longitudinally polarized p+p collisions at the Relativistic Heavy Ion Collider in the 2013 run using the PHENIX detector. At this collision energy, J/ψ particles are predominantly produced through gluon-gluon scatterings, thus ALLJ/ψ is sensitive to the gluon polarization inside the proton. We measured ALLJ/ψ by detecting the decay daughter muon pairs μ+μ- within the PHENIX muon spectrometers in the rapidity range 1.2

• Author: A Adare; C. Aidala; N. N. Ajitanand; Y. Akiba; R. Akimoto; M. Alfred; Anders Oskarsson; David Silvermyr
• Department/s: Particle and nuclear physics
• Publishing year: 2016
• Language: English
• Publication/Series: Physical Review D - Particles, Fields, Gravitation and Cosmology
• Volume: 94
• Issue: 11
• Links: http://dx.doi.org/10.1103/PhysRevD.94.112008
• Document type: Journal article
• Publisher: American Physical Society
• Topic: Subatomic Physics
• Status: Published
• ISBN/ISSN/Other: ISSN: 1550-2368