Some Aspects of Anisotropic Quark-Gluon Plasma

Abstract

We review the various aspects of anisotropic quark-gluon plasma (AQGP) that have recently been discussed by a number of authors. In particular, we focus on the electromagnetic probes of AQGP, inter quark potential, quarkonium states in AQGP, and the nuclear modifications factor of various bottomonium states using this potential. In this context, we will also discuss the radiative energy loss of partons and nuclear modification factor of light hadrons in the context of AQGP. The features of the wake potential and charge density due to the passage of jet in AQGP will also be demonstrated.

Dissociation of Quarkonium in Hot and Dense Media in an Anisotropic Plasma in the Nonrelativistic Quark Model

“…[26] 3.10 3.17 Ref. [47] 2.964 3.062 not to reach the binding energy (𝐸 𝑏 ) to be zero for the dissociation but a weaker condition is assumed 𝐸 𝑏 ≤ 𝑇 which causes a state to be weakly bound. In fact, when 𝐸 𝑏 ≃ 𝑇, the resonances have been broadened due to direct thermal activation.…”

“…The anisotropy is caused by external fields in studying the properties of quarkonium states [41][42][43][44][45][46]. Besides, the anisotropic quark-gluon plasma 2 Advances in High Energy Physics concepts are reviewed in [47]. The phenomenological studies that can reproduce the experimentally measured 𝑅 𝐴𝐴 of bottomonia with and without recombination are given in [48,49], respectively.…”

Predictions for the Isolated Prompt Photon Production at the LHC ats= 13 TeV

“…It has also been recognised as a powerful tool to study the fundamental properties of quark-gluon plasma (QGP) created in these collisions [70][71][72][73][74][75][76]. Furthermore, since the nuclear parton distribution functions (nPDFs) [77][78][79][80][81][82] (especially of the gluon) cannot be well determined using the available nuclear deep inelastic scattering (DIS) and Drell-Yan experimental data compared with the PDFs of the free nucleon, the measurements of prompt photon production in heavy-ion collisions can be used to constrain the gluon distributions within nuclei [83][84][85][86].…”

“…The production of photons in heavy-ion collisions [56][57][58][59][60][61][62][63][64][65][66] looks a promising future tool for studying the cold nuclear matter effects [67,68], since photons are not accompanied by any final state interaction and hence leave the system with their energy and momenta unaltered. It has also been recognised as a powerful tool to study the fundamental properties of quark gluon plasma (QGP) created in these collisions [69][70][71][72][73][74][75]. Furthermore, since the nuclear parton distribution functions (nPDFs) [76][77][78][79][80][81] (especially of the gluon) cannot be well determined using the available nuclear deep inelastic scattering (DIS) and Drell-Yan experimental data compared with the PDFs of the free nucleon, the measurements of prompt photon production in heavy-ion collisions can be used to constrain the gluon distributions within nuclei [82][83][84][85].…”

Jet-dilepton conversion from an anisotropic quark-gluon plasma

“…Dileptons (photon as well) can be one such observables. In the early stages of heavy ion collisions, due to the rapid longitudinal expansion the plasma after formation in isotropic phase, may become anisotropic [23][24][25][26][27][28][29][30][31]. As a result the momentum distribution of the plasma particles become anisotropic in momentum space.…”