Abstract
We have calculated the in-medium magnetic moments of octet baryons in the presence of hot and dense symmetric nuclear matter. Effective magnetic moments of baryons have been derived from medium modified quark masses within the chiral SU(3) quark mean field model. Further, for better insight into the medium modification of baryonic magnetic moments, we have considered the explicit contributions from the valence quarks, sea quarks and the sea orbital angular momentum of sea quarks. These effects have been successful in giving the description of baryonic magnetic moments in vacuum. The magnetic moments of baryons are found to vary significantly as a function of density of nuclear medium.
Highlights
The study of in-medium properties of octet and decuplet baryons is of great importance in the present era
The main objectives of the heavy-ion collision facilities are to study the properties of hadrons in hadronic matter, chiral symmetry restoration at high temperature and density of medium, de-confinement phase from hadrons to QGP and to determine the equation of state for the hadronic matter at high density [4,5,6]
The magnetic moments of octet as well as decuplet baryons have been extensively studied in the free space [7,8,9,10,11,12,13]
Summary
The study of in-medium properties of octet and decuplet baryons is of great importance in the present era. MIT bag model provided a useful way to calculate baryonic magnetic moments considering the constituent quarks to be non-interacting [16]. In the present work we have used chiral SU(3) quark mean field model to calculate the inmedium magnetic moments of baryon octet at finite temperature and density of the medium through the medium modification of baryon masses. The outline of the paper is as follows: In section II A we will apply CQMF model to find the effective quark masses at finite temperature and density of nuclear medium, and calculate effective baryon octet masses. The values of coupling constant gs and additional mass term m1 in equation (18) can be calculated by taking mu = md = 313 MeV and ms = 490 MeV as vacuum masses of quarks.
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