Light flavor asymmetry of polarized quark distributions in thermodynamical bag model

The polarized quark distributions x∆−_u(x) x∆−_d (x) and x ((∆ −_u(x)−∆−_d (x)) are evaluated in the kinematic range 0.012=10 GeV² using Thermodynamical Bag Model(TBM). Flavor decomposition of polarized quark distribution are evaluated as a function of x for up (∆u + ∆−_u)/(u + −_u) and down (∆d + ∆−_d)/(d + −_d) flavor in the kinematic range 0.0332 =2.5 GeV² using TBM. The calculated values are compared with the theoretical predictions of the Chiral Quark Soliton Model (CQSM) and experimental results of J Lab E99117 and HERMES Collaboration (author)