The flavour asymmetry and quark-antiquark asymmetry in the ${\Sigma }^{+}$-sea

Abstract

The sea quark content of the ${\Sigma }^{+}$ baryon is investigated using light-cone baryon-meson fluctuation model suggested by Brodsky and Ma. It is found that the ${\Sigma }^{+}$ sea is flavour asymmetric ($\dbar > \ubar > \sbar$) and quark-antiquark asymmetric ($q \not= \qbar$). Our prediction for the flavour asymmetry, $\dbar > \ubar > \sbar$, is significantly different from the SU(3) prediction ($\dbar < \ubar < \sbar$), while our prediction for the $d$-$\dbar$ asymmetry is consistent with the SU(3) prediction.

RevTex, 12 pages, 4 Postscript figures. The effects from the input parton distribution evolution are discussed. Conclusions remain. Version to appear in Phys. Lett. B

References in corpus (3)

• Parton Distributions for the Octet and Decuplet Baryons
• Two analytical constraints on the $\eta$-${\eta }^{\prime }$ mixing
• On the phenomenological analyses of $s$-$\bar{s}$ asymmetry in the nucleon sea

Cited by in corpus (4)

• Quark Distributions of Octet Baryons from SU(3) Symmetry
• Sea quark contents of octet baryons
• Meson Cloud and SU(3) Symmetry Breaking in Parton Distributions
• Sea flavor content of octet baryons and intrinsic five-quark Fock states