Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1997-01-09
Z.Phys. C74 (1997) 463-468
Physics
High Energy Physics
High Energy Physics - Phenomenology
11 pages, 4 figures, plain Latex
Scientific paper
Recent accurate data on F_2(x,Q) and on F_2^c(x,Q) from HERA at small-x require a more precise treatment of charm production in the global QCD analysis of parton distributions. We improve on existing global analyses by implementing the leptoproduction formalism of Aivazis et al. which represents a natural generalization of the conventional zero mass QCD parton framework to include heavy quark mass effects. We also perform analyses based on the fixed-flavor-number scheme, which is widely used in the literature, and demonstrate their uses and limitations. We discuss the implications of the improved treatment of heavy quark mass effect in practical applications of PQCD and compare our results with recent related works.
Lai Hung-Liang
Tung W.-K.
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