Production of two $J/ψ$ mesons in proton-proton collisions at the LHC

Szczurek, Antoni; Cisek, Anna; Schafer, Wolfgang

doi:10.48550/arxiv.1710.11450

Cited by 1 publication

(1 citation statement)

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“…Especially, the production/suppression of quarkonia has been studied either theoretically or experimentally in Ref. [42][43][44][45][46][47][48][49][50][51][52][53][54][55][56][57][58], and the disassociation temperature in Ref. [59][60][61][62][63][64][65].…”

Section: Introductionmentioning

confidence: 99%

Dissociation of heavy quarkonia in an anisotropic hot QCD medium in a Quasi-Particle Model

Jamal¹,

Nilima²,

Chandra³

et al. 2018

Preprint

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The present article is the follow-up work of, Phys. Rev. D 94, 094006 (2016), where we have extended the study of quarkonia dissociation in (momentum) anisotropic hot QCD medium. As evident by the experimentally observed collective flow at RHIC and LHC, the momentum anisotropy is present at almost all the stages after the collision and therefore, it is important to include its effects in the analysis. Employing the in-medium (corrected) potential while considering the anisotropy (both oblate and prolate cases) in the medium, the thermal widths and the binding energies of the heavy quarkonia states (s-wave charmonia and s-wave bottomonia specifically, for radial quantum numbers n = 1 and 2) have been determined. The hot QCD medium effects have been included employing a quasi-particle description. The presence of anisotropy has modified the potential and then the thermal widths and the binding energies of these states in a significant manner. The results show a quite visible shift in the values of dissociation temperatures as compared to the isotropic case. Further, the hot QCD medium interaction effects suppress the dissociation temperature as compared to the case where we consider the medium as a non-interacting ultra-relativistic gas of quarks (anti-quarks) and gluons.

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