Quark flavor distribution functions for the octet baryons in the chiral quark constituent model

Abstract

The quark flavor distribution functions of the octet baryons ($N$, $\Sigma$, $\Xi$ and $\Lambda$) have been calculated in the chiral constituent quark model ($\chi$CQM). In particular, the valence and sea quark flavor distribution functions of the scalar density matrix elements of octet baryons have been computed explicitly. The implications of chiral symmetry breaking and SU(3) symmetry breaking have been discussed in detail for the sea quark asymmetries, fraction of a particular quark (antiquark) present in a baryon, flavor structure functions and the Gottfried integral. The meson-baryon sigma terms ${\sigma }_{\pi B}$, ${\sigma }_{KB}$, and ${\sigma }_{\eta B}$ for the case of $N$, $\Sigma$ and $\Xi$ baryons have also been calculated. The results have been compared with the recent available experimental observations for the case of $N$ and how the future experiments for $\Sigma$, $\Xi$ and $\Lambda$ can provide important constraints to describe the role of non-valence (sea) degrees of freedom has been discussed.

References in corpus (10)

• Spin 1/2^+, spin 3/2^+ and transition magnetic moments of low lying and charmed baryons
• Flavor Structure of the Nucleon Sea
• Statistical effect in the parton distribution functions of the nucleon
• Quark asymmetries in the proton from a model for parton densities
• Spin and Flavor Strange Quark Content of the Nucleon
• Generalized parton distributions in a meson cloud model
• Axial-vector form factors for the low lying octet baryons in the chiral quark constituent model
• Quadrupole moments of low lying baryons with spin 1/2^+, spin 3/2^+, and spin 3/2^+ \to 1/2^+ transitions
• Sea quark contents of octet baryons
• The baryon octet magnetic moments to all orders in flavor breaking; an application to the problem of the strangeness in the nucleon

Cited by in corpus (2)

• Electromagnetic and Axial-Vector Form Factors of the Quarks and Nucleon
• Generalized parton distributions for the lowest-lying octet baryons