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.

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

Contin, G.;
2018-01-01

Abstract

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
2018
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http://www.sciencedirect.com/science/journal/03702693
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11368/2940529
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