English

Charmonia and Bottomonia in asymmetric magnetized hot nuclear matter

High Energy Physics - Phenomenology 2020-01-08 v1

Abstract

We investigate the mass-shift of PP-wave charmonium (χc0{\chi_c}_0, χc1{\chi_c}_1) and SS and PP-wave bottomonium (ηb\eta_b, Υ\Upsilon, χb0{\chi_b}_0 and χb1{\chi_b}_1) states in magnetized hot asymmetric nuclear matter using the unification of QCD sum rules (QCDSR) and chiral SU(3)SU(3) model. Within QCDSR, we use two approaches, i.e.i.e., moment sum rule and Borel sum rule. The magnetic field induced scalar gluon condensate αsπGμνaGaμν\left\langle \frac{\alpha_{s}}{\pi} G^a_{\mu\nu} {G^a}^{\mu\nu} \right\rangle and the twist-2 gluon operator αsπGμσaGaνσ\left\langle \frac{\alpha_{s}}{\pi} G^a_{\mu\sigma} {{G^a}_\nu}^{\sigma} \right\rangle calculated in chiral SU(3SU(3) model are utilised in QCD sum rules to calculate the in-medium mass-shift of above mesons. The attractive mass-shift of these mesons is observed which is more sensitive to magnetic field in high density regime for charmonium, but less for bottomonium. These results may be helpful to understand the decay of higher quarkonium states to the lower quarkonium states in asymmetric heavy ion collision experiments.

Keywords

Cite

@article{arxiv.1904.05128,
  title  = {Charmonia and Bottomonia in asymmetric magnetized hot nuclear matter},
  author = {Rajesh Kumar and Arvind Kumar},
  journal= {arXiv preprint arXiv:1904.05128},
  year   = {2020}
}

Comments

30 Pages and 10 figures