J/Ψ PRODUCTION IN a GLAUBER MONTE CARLO FRAMEWORK

Abstract

By means of a Glauber Monte Carlo framework, the J/ψ production at RHIC energies is studied with the EKS98, EPS09 and HKN07 shadowing parameters. With a χ2 analysis of the experimental data given by PHENIX, a significant dependence of the absorption cross-section, σ abs , on the J/ψ-nucleon center-of-mass energy, [Formula: see text], is revealed with the HKN07 shadowing, but an unconspicuous dependence is shown with the EKS98 and EPS09 shadowing. In this paper, the nuclear modification factor Rd Au vs y, pT and N coll are also calculated and the theoretical results are in good agreement with the experimental data.

Hadron Multiplicities in p+p and p+Pb Collisions

“…where m 0 is the rest mass of particle, which corresponds to the order of the scale Λ QCD . With a χ 2 analysis of the experimental data [18] , the factor κ in Eq. ( 2) is equal to 0.51 and 0.89 for the theory with and without considering the rms radius dependent saturation scale, respectively.…”

Influence of the Nucleon Hard Partons Distribution on J /Ψ Suppression in a GMC Framework

“…In the framework of the GMC, only the essential J/ψ production process [8] , g + g → cc, is considered. Thus, the subprocess cross section can be obtained by extracting from the proton-proton (p+p) experimental data [9] and given as the Monte Carlo inputs of rapidity (y) and transverse momentum (p T ) [3,4] . The shadowing and "normal nuclear absorption"effects, which are two dominant CNM effects at Relativistic Heavy Ion Collider (RHIC) and Large Hadron Collider (LHC) energies, can also be considered properly in the GMC framework.…”

“…The absorption cross section, σ abs , is taken as 3.1mb by a global χ 2 analysis with the experimental data from PHENIX [4,7] . Both the shadowing and nuclear absorption effects are ignored for deuteron.…”

“…Thus, the subprocess cross section can be obtained by extracting from the proton-proton (p+p) experimental data [9] and given as the Monte Carlo inputs of rapidity (𝑦) and transverse momentum (𝑝 𝑇 ). [3,4] The shadowing and normal nuclear absorption effects, which are two dominant CNM effects at Relativistic Heavy Ion Collider (RHIC) and Large Hadron Collider (LHC) energies, can also be considered properly in the GMC framework. Since shadowing should depend on the spatial position of the interaction parton within the nucleus, the inhomogeneous shadowing effect [10,11] should also be taken into account.…”

“…The absorption cross section 𝜎 abs is taken as 3.1 mb by a global 𝜒 2 analysis with the experimental data from PHENIX. [4,7] Both the shadowing and nuclear absorption effects are ignored for deuteron. Now let us consider the influence of the transverse spatial distribution of hard partons in the nucleon.…”