he p - ph / 9 60 93 84 17 S ep 1 99 6 SLAC - PUB - 7257 September 1996
نویسندگان
چکیده
The cross section for Drell-Yan pair production in the limit of small x target is derived in the rest frame of the target hadron. Our calculation is based on the fundamental quantity σ(ρ), the cross section for the scattering of a q ¯ q-pair with fixed transverse separation ρ off a hadronic target. As in deep inelastic scattering the result can be given in terms of integrals of σ(ρ). This is consistent with well known factorization theorems and also relates higher-twist terms in both processes. An analysis of the angular distribution of the produced lepton shows that additional integrals of σ(ρ) can be obtained in the Drell-Yan process, which are not measurable in inclusive deep inelastic scattering.
منابع مشابه
ar X iv : h ep - p h / 96 09 21 5 v 1 1 S ep 1 99 6 SLAC - PUB - 7272 hep - ph / 9609215 August 1996
I briefly review three topics of recent interest concerning power corrections, renor-malons and Sudakov resummation: (a) 1/Q corrections to event shape observables in e + e − annihilation, (b) power corrections in Drell-Yan production and (c) facto-rial divergences that arise in resummation of large infrared (Sudakov) logarithms in moment or 'real' space.
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ar X iv : h ep - p h / 96 09 21 5 3 1 A ug 1 99 6 SLAC - PUB - 7272 hep - ph / 9609215 August 1996 POWER CORRECTIONS
I briefly review three topics of recent interest concerning power corrections, renor-malons and Sudakov resummation: (a) 1/Q corrections to event shape observables in e + e − annihilation, (b) power corrections in Drell-Yan production and (c) facto-rial divergences that arise in resummation of large infrared (Sudakov) logarithms in moment or 'real' space.
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Some of the most difficult theoretical challenges of QCD occur at the interface of the perturbative and nonperturbative regimes. Exclusive and semi-exclusive processes, the diffractive dissociation of hadrons into jets, and hard diffractive processes such as vector meson leptoproduction provide new testing grounds for QCD and essential information on the structure of light-cone wavefunctions of...
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