In-medium masses and magnetic moments of decuplet baryons

Abstract

The magnetic moments of baryon decuplet are studied in vacuum as well as in the symmetric nuclear matter at finite temperature using a chiral SU(3) quark mean field model approach. The contributions coming from the valence quarks, quark sea and the orbital angular momentum of the quark sea have been considered to calculate magnetic moment of decuplet baryons. The decuplet baryon masses decrease, whereas, the magnetic moments increase significantly with the rise of baryonic density of the symmetric nuclear medium. This is because of the reason that constituent quark magnetic moment and the quark spin polarizations show considerable variation in the nuclear medium especially in the low temperature and baryonic density regime. The increase is however quantitatively less as compared to the case of octet baryon members.

Quark Matter within Polyakov Chiral SU(3) Quark Mean Field Model at Finite Temperature

“…CQMF model can also explain the hadronic and quark matter phase and can further be used for the study of a mixed-phase, where both the hadrons and quarks can exist simultaneously [66]. This model has also been used to investigate the in-medium magnetic moments of octet and decuplet baryons [70,74]. In the present model, the interaction of quarks is explained in terms of non-strange scalar meson field, σ, strange scalar meson field, ζ, scalar isovector meson field, δ, scalar isoscalar dilaton field, χ, non-strange vector field, ω, nonstrange vector-isovector field, ρ and strange vector field, φ.…”