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Paper   IPM / Particles / 11592
School of Particles and Accelerator
  Title:   Variable flavor number parton distributions at next-to-next-to-leading order of QCD
  Author(s): 
1 . Hamzeh Khanpour
2 . Ali Naghi Khorramian
  Status:   Published
  Journal: Acta. Phy. Polonica B
  No.:  12
  Vol.:  41
  Year:  2010
  Supported by:  IPM
  Abstract:
Utilizing recent deep inelastic scattering data and our recent NLO analysis, we present a QCD analysis of the proton in order to determine the parton distributions at next-to-next-to-leading order (NNLO) of QCD. We also study the heavy quark contributions to the proton structure function Fi 2(x;Q2), with i = c, b. Our NNLO analysis will be performed within the modified minimal subtraction factorization and renormalization scheme. This analysis is undertake within the framework of the so called ?zero-mass variable flavor number scheme? (ZM-VFNS) parton model predictions at high energy colliders where the heavy quarks (c, b, t) considered as massless partons within the nucleon.

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