Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2007-07-17
Phys.Lett.B657:55-63,2007
Physics
High Energy Physics
High Energy Physics - Phenomenology
15 pages, 3 figures. Final version, to be published in Phys. Lett. B. Several typos corrected (in particular eqs 26,41,53); fi
Scientific paper
10.1016/j.physletb.2007.09.060
We present a new prescription for the resummation of the divergent series of perturbative corrections, due to soft gluon emission, to hard processes near threshold in perturbative QCD (threshold resummation). This prescription is based on Borel resummation, and contrary to the commonly used minimal prescription, it does not introduce a dependence of resummed physical observables on the kinematically unaccessible x->0 region of parton distributions. We compare results for resummed deep-inelastic scattering obtained using the Borel prescription and the minimal prescription and exploit the comparison to discuss the ambiguities related to the resummation procedure.
Abbate Riccardo
Forte Stefano
Ridolfi Giovanni
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