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Paper   IPM / P / 7626
School of Physics
  Title:   Analysis of bb bar Production in Proton-Antiproton Collisions, Using Approach of Complete RG-Improvement
1.  A. Mirjalili
2.  Ali N. Khorramian
3.  S. Atashbar Tehrani
  Status:   Published
  Journal: Nucl. Phys. B Proc. Suppl.
  Vol.:  152
  Year:  2006
  Pages:   136-139
  Supported by:  IPM
Due to uncertainty which is coming from renormalization and factorization scale dependence of finite order perturbation calculations in the total cross section of bb production, there will be sizable discrepancy between experimental data and theoretical results on the bb production in pp 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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