J/ψ production cross section and its dependence on charged-particle multiplicity in p+p collisions at √s = 200 GeV

Adam, Jaroslav

doi:10.1016/j.physletb.2018.09.029

Title: J/ψ production cross section and its dependence on charged-particle multiplicity in p+p collisions at √s = 200 GeV

Journal Article · 18 September 2018 · Physics Letters B

DOI: https://doi.org/10.1016/j.physletb.2018.09.029 · OSTI ID:1438432

Adam, Jaroslav ^[1]

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 (p_T) for 0 < p_T < 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 p_T 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.

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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

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Cited By (1)

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 Adam, J.; Adamczyk, L.; Adams, J. R. Physical Review D, Vol. 100, Issue 5 https://doi.org/10.1103/physrevd.100.052009	journal	September 2019

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"Figure 3" of "$J/\psi$ production cross section and its dependence on charged-particle multiplicity in $p + p$ collisions at $\sqrt{s}$ = 200 GeV" Collaboration, Star https://doi.org/10.17182/hepdata.85057.v1/t2 The current record is supplemented by this dataset	dataset	January 2020
"Figure 4" of "$J/\psi$ production cross section and its dependence on charged-particle multiplicity in $p + p$ collisions at $\sqrt{s}$ = 200 GeV" Collaboration, Star https://doi.org/10.17182/hepdata.85057.v1/t3 The current record is supplemented by this dataset	dataset	January 2020