Heavy Quarkonia in a Baryon Asymmetric Strongly Magnetized Hot Quark Matter

Recently there is a resurrection in the study of heavy quark bound states in a hot and baryonless matter with an ambient magnetic field but the matter produced at heavy-ion collider experiments is not perfectly baryonless, so we wish to explore the effect of small baryon asymmetry on the in-medium properties of the heavy quark bound states submerged in a strongly magnetized hot quark matter. Therefore, we have first given a revisit to the general covariant tensor structure of gluon self-energy in the above environment to compute the resummed propagator for gluons. This resummed propagator embodies the properties of medium, which gets translated into the (complex) potential between Q and Q over bar placed in the medium. We observe that the baryon asymmetry makes the real-part of potential slightly more attractive and weakens the imaginary-part. This opposing effects thus lead to the enhancement of binding energies and the reduction of thermal widths of Q Q over bar ground states, respectively. Finally, the properties of quarkonia thus deciphered facilitate to compute the dissociation points of J/& psi; and ?, which are found to have slightly larger values in the presence of baryon asymmetry. For example, J/& psi; gets dissociated at 1.64 Tc, 1.69 Tc, and 1.75 Tc, whereas ? is dissociated at 1.95 Tc, 1.97 Tc and 2.00 Tc, for & mu; = 0, 60 and 100 MeV, respectively. This observation prevents early dissociation of quarkonia in the matter produced at ultrarelativistic heavy ion collisions with a small net baryon number, compared to the ideal baryonless matter. & COPY; 2023 Elsevier B.V. All rights reserved.