不对称热奇异强子物质中粲重子的有效质量和磁矩

Suneel Dutt, Arvind Kumar, Harleen Dahiya
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引用次数: 0

摘要

在本研究中,我们利用手性SU(3)夸克均场模型研究了有限温度下奇异强子介质中自旋$-{\frac{1}{2}}^+$和自旋$-{\frac{3}{2}}^+$单粲和双粲重子的质量和磁矩。手性SU(3)平均场模型框架内重子的性质是以组成夸克的质量和能量来定义的,它们通过标量场$\sigma$, $\zeta$ 和$\delta$以及矢量场$\omega$, $\rho$ 和$\phi$的交换而改变。当介质具有有限的等时空不对称性时,标量-异矢量场($\delta$)和矢量-异矢量场($\rho$)会做出贡献。我们在手性SU(3)夸克均场模型中计算了核物质和奇异物质中组成夸克和粲重子的有效质量,并把它们作为SU(4)组成手性夸克模型的输入来计算这些重子的有效磁矩。考虑到构型混杂,我们明确地考虑了价夸克、夸克海和夸克海轨道角动量的贡献,以计算中间磁矩。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effective masses and magnetic moments of charmed baryons in asymmetric hot strange hadronic matter
In the present work, we have studied the masses and magnetic moments of spin$-{\frac{1}{2}}^+$ and spin$-{\frac{3}{2}}^+$ singly and doubly charmed baryons in the strange hadronic medium at finite temperature using the chiral SU(3) quark mean field model. The properties of baryons within the framework of chiral SU(3) mean field model are defined in terms of constituent quark masses and energies, which are modified through the exchange of scalar fields $\sigma$, $\zeta$ and $\delta$ and the vector fields $\omega$, $\rho$ and $\phi$. The scalar-isovector field, $\delta$ and the vector-isovector field, $\rho$ contribute when medium has finite isospin asymmetry. We have calculated the effective masses of constituent quarks and charmed baryons in the nuclear and strange matter within the chiral SU(3) quark mean field model and have used these as the input in SU(4) constituent chiral quark model to compute the effective magnetic moments of these baryons. Considering the configuration mixing, the contributions of valence quarks, quark sea and orbital angular momentum of quark sea have been considered explicitly to calculate the in-medium magnetic moments.
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