Title

J/psi Production at High Transverse Momenta in P plus P and Cu plus Cu collisions at Root s(NN)=200 GeV

Authors

A. Bhasin, Valparaiso University
David Grosnick, Valparaiso University
Donald D. Koetke, Valparaiso University
Robert Manweiler, Valparaiso University
Shirvel Stanislaus, Valparaiso University
J. C. Webb, Valparaiso University
STAR Collaboration

Document Type

Article

Publication Date

10-2009

Abstract

The STAR Collaboration at the Relativistic Heavy Ion Collider presents measurements of J/psi e(+) e(-) at midrapidity and high transverse momentum (pT > 5 GeV/c) in p + p and central Cu + Cu collisions at root s(NN) = 200 GeV. The inclusive J/psi production cross section for Cu + Cu collisions is found to be consistent at high p(T) with the binary collision-scaled cross section for p + p collisions. At a confidence level of 97%, this is in contrast to a suppression of J/psi production observed at lower p(T). Azimuthal correlations of J/psi with charged hadrons in p + p collisions provide an estimate of the contribution of B-hadron decays to J/psi production of 13% +/- 5%.

Recommended Citation

Bhasin, A.; Grosnick, David; Koetke, Donald D.; Manweiler, Robert; Stanislaus, Shirvel; Webb, J. C.; and STAR Collaboration, "J/psi Production at High Transverse Momenta in P plus P and Cu plus Cu collisions at Root s(NN)=200 GeV" (2009). Physics and Astronomy Faculty Publications. 68.
https://scholar.valpo.edu/phys_astro_fac_pub/68