J/ψ production cross section and its dependence on charged-particle multiplicity in p+p collisions at √s = 200 GeV
- Creighton Univ., Omaha, NE (United States). et al.
Here, we present a measurement of inclusive J/ψ production at mid-rapidity (|y| < 1) in p+p collisions at a center-of-mass energy of √s = 200 GeV with the STAR experiment at the Relativistic Heavy Ion Collider (RHIC). The differential production cross section for J/ψ as a function of transverse momentum (pT) for 0 < pT < 14 GeV/c and the total cross section are reported and compared to calculations from the color evaporation model and the non-relativistic Quantum Chromodynamics model. The dependence of J/ψ relative yields in three pT intervals on charged-particle multiplicity at mid-rapidity is measured for the first time in p+p collisions at √s = 200 GeV and compared with that measured at √s = 7 TeV, PYTHIA8 and EPOS3 Monte Carlo generators, and the Percolation model prediction.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States); University of Illinois, Chicago, IL (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- Contributing Organization:
- STAR Collaboration
- Grant/Contract Number:
- SC0012704; FG02-94ER40865; AC02-05CH11231
- OSTI ID:
- 1438432
- Alternate ID(s):
- OSTI ID: 1563977; OSTI ID: 1874526; OSTI ID: 1659557; OSTI ID: 1665941; OSTI ID: 22853626
- Report Number(s):
- BNL--205688-2018-JAAM; {"Journal ID: ISSN 0370-2693","PII: S0370269318307305"}
- Journal Information:
- Physics Letters B, Journal Name: Physics Letters B Vol. 786; ISSN 0370-2693
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Measurements of the transverse-momentum-dependent cross sections of J / ψ production at mid-rapidity in proton + proton collisions at s = 510 and 500 GeV with the STAR detector
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journal | September 2019 |
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