Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1996-04-13
Nucl.Phys.B484:303-330,1997
Physics
High Energy Physics
High Energy Physics - Phenomenology
32 pages, phyzzx.tex macropackage, 1 figure
Scientific paper
10.1016/S0550-3213(96)00567-6
We present a unified derivation of the resummation of Sudakov logarithms, directly from the factorization properties of cross sections in which they occur. We rederive in this manner the well-known exponentiation of leading and nonleading logarithmic enhancements near the edge of phase space for cross sections such as deeply inelastic scattering, which are induced by an electroweak hard scattering. For QCD hard-scattering processes, such as heavy-quark production, we show that the resummation of nonleading logarithms requires in general mixing in the space of the color tensors of the hard scattering. The exponentiation of Sudakov logarithms implies that many weighted cross sections obey particular evolution equations in momentum transfer, which streamline the computation of their Sudakov exponents. We illustrate this method with the resummation of soft-gluon enhancements of the inclusive Drell-Yan cross section, in both DIS and $\overline{{\rm MS}}$ factorization schemes.
Contopanagos Harry
Laenen Eric
Sterman George
No associations
LandOfFree
Sudakov Factorization and Resummation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Sudakov Factorization and Resummation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sudakov Factorization and Resummation will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-689401