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| Paper IPM / P / 8329 |
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| Abstract: | |||||||
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We analyze flavor-asymmetry in the light-quark sea distribution,
using polarized valon framework. The comparison of our obtained
results for δ―u(x, Q2), δ―d(x,Q2)
and δ―s(x, Q2) with the GRSV model and recent
experimental data from HERMES group indicates a very good
agreement with them specially for strange sea quark. Parton
orbital angular momentum is also investigated. It is shown that
the Q2 evolution of quark and gluon angular momentum is in good
agreement with the result which can be obtained in the NLO
approximation from helicity sum rule.
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