Octet baryon masses and magnetic moments in hot and dense isospin asymmetric nuclear matter

Singh, H.; Kumar, Arvind; Dahiya, Harleen

doi:10.1140/epjp/i2019-12486-4

Cited by 4 publications

(1 citation statement)

References 105 publications

(143 reference statements)

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“…In Refs. [35] and [36] chiral quark mean field model has been used to study the magnetic moments of octet baryons in symmetric and asymmetric nuclear matter, respectively. The study of in-medium magnetic moments of baryons has been also extended to symmetric strange matter for octet [37] and decuplet baryons [38].…”

Section: Introductionmentioning

confidence: 99%

Impact of summer moong through improved technology in Jalandhar district of Punjab, India

Kumar¹,

Boparai²

2020

Int.J.Curr.Microbiol.App.Sci

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In the present work we study the masses and magnetic moments of decuplet baryons in isospin asymmetric strange hadronic medium at finite temperature using chiral SU(3) quark mean field model. In the strange isospin asymmetric medium, the properties of baryons in chiral SU(3) mean field model are modified through the exchange of scalar fields σ, ζ and δ and the vector fields ω, ρ and φ. The scalar-isovector field δ and the vector-isovector field ρ signifies the finite isospin asymmetry of the medium. We calculate the in-medium constituent quark masses and masses of decuplet baryons in asymmetric strange matter within the chiral SU(3) quark mean field model and use these as input in the constituent chiral quark model to calculate the in-medium magnetic moments of decuplet baryons for different values of isospin asymmetry and strangeness fraction of hot and dense medium. For calculating the magnetic moments of baryons, contributions of valence quarks, quark sea and orbital angular momentum of quark sea are considered in the calculations.

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Section: Introductionmentioning

confidence: 99%

Impact of summer moong through improved technology in Jalandhar district of Punjab, India

Kumar¹,

Boparai²

2020

Int.J.Curr.Microbiol.App.Sci

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Magnetic moments of the octet, decuplet, low-lying charm, and low-lying bottom baryons in a nuclear medium

Tsushima

2022

Progress of Theoretical and Experimental Physics

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We study the magnetic moments of the octet, decuplet, low-lying charm, and low-lying bottom baryons with nonzero light quarks in symmetric nuclear matter using the quark-meson coupling (QMC) model, which satisfies the constraint for the allowed maximum change (swelling) of the in-medium nucleon size derived from the y-scaling data for 3He(e, e′) and 56Fe(e, e′). This is the first study to estimate the in-medium magnetic moments of the low-lying charm and bottom baryons with nonzero light quarks. The present QMC model also satisfies the expected allowed maximum enhancement of the nucleon magnetic moments in nuclear matter. Moreover, it has been proven that the calculated in-medium to free proton electromagnetic form factor (EMFF) ratios calculated within the QMC model, reproduce well the proton EMFF super ratio extracted from $^4{\rm He}(\vec{e},e^{\prime }\vec{p})^3{\rm H}$ at Jefferson Laboratory (JLab). The medium modifications of the magnetic moments are estimated by evaluating the in-medium to free space baryon magnetic moment ratios to compensate the MIT bag deficiency to describe the free space octet baryon magnetic moments, where ratios are often measured directly in experiments even without knowing the absolute values, such as the free and bound proton electromagnetic form factors, as well as the European Muon Collaboration (EMC) effect to extract the structure function F2 ratio of the bound to free nucleons by the corresponding cross section ratio. We also present the results calculated with the different current quark mass values for the strange and bottom quarks to see the possible impact. Furthermore, for a practical use, we give the explicit density dependent parametrizations for the vector potentials of the baryons and light-(u, d) quarks, as well as for the effective masses of the baryons treated in this study, and of the mesons, ω, ρ, K, K*, η, η′, D, D*, B, and B*.

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Magnetic moments of decuplet baryons in asymmetric strange hadronic matter at finite temperature

Kumar,

Dutt,

Dahiya

2024

Eur. Phys. J. A

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Octet baryon masses and magnetic moments in hot and dense isospin asymmetric nuclear matter

Cited by 4 publications

References 105 publications

Impact of summer moong through improved technology in Jalandhar district of Punjab, India

Impact of summer moong through improved technology in Jalandhar district of Punjab, India

Magnetic moments of the octet, decuplet, low-lying charm, and low-lying bottom baryons in a nuclear medium

Magnetic moments of decuplet baryons in asymmetric strange hadronic matter at finite temperature

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