Transverse momentum dependence of J/{psi} polarization at midrapidity in p+p collisions at {radical}(s)=200 GeV

Journal Article · Thu Jul 01 00:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.82.012001· OSTI ID:21410009

Adare, A; Bickley, A A; Ellinghaus, F; Glenn, A; Kinney, E; Kiriluk, K; Nagle, J L; Seele, J; Wysocki, M ^[1]; Afanasiev, S; Isupov, A; Litvinenko, A; Malakhov, A; Peresedov, V; Rukoyatkin, P; Zolin, L ^[2]; Aidala, C ^[3]; Ajitanand, N N; Alexander, J; Chung, P ^[4]

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1. University of Colorado, Boulder, Colorado 80309 (United States)
2. Joint Institute for Nuclear Research, 141980 Dubna, Moscow Region (Russian Federation)
3. Department of Physics, University of Massachusetts, Amherst, Massachusetts 01003-9337 (United States)
4. Chemistry Department, Stony Brook University, Stony Brook, SUNY, New York 11794-3400 (United States)

We report the measurement of the transverse momentum dependence of inclusive J/{psi} polarization in p+p collisions at {radical}(s)=200 GeV performed by the PHENIX Experiment at the Relativistic Heavy Ion Collider. The J/{psi} polarization is studied in the helicity, Gottfried-Jackson, and Collins-Soper frames for p{sub T}<5 GeV/c and |y|<0.35. The polarization in the helicity and Gottfried-Jackson frames is consistent with zero for all transverse momenta, with a slight (1.8 sigma) trend towards longitudinal polarization for transverse momenta above 2 GeV/c. No conclusion is allowed due to the limited acceptance in the Collins-Soper frame and the uncertainties of the current data. The results are compared to observations for other collision systems and center of mass energies and to different quarkonia production models.

• OSTI ID: 21410009
• Journal Information: Physical Review. D, Particles Fields, Vol. 82, Issue 1; Other Information: DOI: 10.1103/PhysRevD.82.012001; (c) 2010 The American Physical Society; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BROOKHAVEN RHIC
CENTER-OF-MASS SYSTEM
COLLISIONS
GEV RANGE 100-1000
HELICITY
J PSI-3097 MESONS
POLARIZATION
PROTON-PROTON INTERACTIONS
TRANSVERSE MOMENTUM
ACCELERATORS
BARYON-BARYON INTERACTIONS
BOSONS
CHARMONIUM
ELEMENTARY PARTICLES
ENERGY RANGE
GEV RANGE
HADRON-HADRON INTERACTIONS
HADRONS
HEAVY ION ACCELERATORS
INTERACTIONS
LINEAR MOMENTUM
MESONS
NUCLEON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
PROTON-NUCLEON INTERACTIONS
QUARKONIUM
STORAGE RINGS
VECTOR MESONS