“School of Physic”
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| Paper IPM / Physic / 7626 |
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| Abstract: | |||||||
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Due to uncertainty which is coming from renormalization and
factorization scale dependence of finite order perturbation
calculations in the total cross section of b―b production,
there will be sizable discrepancy between experimental data and
theoretical results on the b―b production in p―p
collisions. Parton distribution functions are obtained, using
valon model where the valon representation provides a basis
between hadrons and quarks, in terms of which the bound-state and
scattering properties of hadrons can be united and described. The
approach of "Complete RG-improvement (CORGI)" will be employed in
which one should perform a resummation to all-orders of
renormalization and factorization group -predictable terms at each
order of perturbation theory so as the scales dependence will be
avoided and as we expect there will be a significantly reduction
for mentioned discrepancy in the total cross section of heavy
quark productions.
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