Sea Quark Flavor Asymmetry of Hadrons in Statistical Balance Model

Details Sea Quark Flavor Asymmetry of Hadrons in Statistical Balance Model Sea Quark Flavor Asymmetry of Hadrons in Statistical Balance Model

2010-08-03

arxiv.org/abs/1008.0467v2

Phys.Rev.D82:074021,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 1 figure

Scientific paper

10.1103/PhysRevD.82.074021

We derive a Menta Carlo method to simulate kinetic equilibrium ensemble, and get the same sea-quark flavor asymmetry as the linear equations method in statistical model. In the recent paper, we introduce the spilt factors to indicate the quarks' or gluons' spilt $g\rightarrow q\bar{q}(gg)$ and $q\rightarrow qg$ ability. We obtain the almost fixed asymmetry value $0.12-0.16$ which consists with experimental measurements for proton, when the spilt factors vary in a very wide range over four orders of magnitude. So, we proof the sea quark asymmetry can be derived from statistic principle and not sensitively dependents on the dynamics details of quarks and gluons in proton. We also apply the Menta Carlo method of statistical model to predict the sea-quark asymmetry values for $K$ mesons, octet baryons $\Sigma$,$\Xi$ and $\Delta$ baryons, even for exotic pentaquark states. All these asymmetry values just only dependent on the valence quarks numbers in those hadrons.

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