Bloch-Nordsieck summation and partonic distributions in impact parameter space
نویسندگان
چکیده
منابع مشابه
Generalized parton distributions in impact parameter space
We study generalized parton distributions in the impact parameter representation, including the case of nonzero skewness ξ. Using Lorentz invariance, and expressing parton distributions in terms of impact parameter dependent wave functions, we investigate in which way they simultaneously describe longitudinal and transverse structure of a fast moving hadron. We compare this information with the...
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Parton distributions in impact parameter space, which are obtained by Fourier transforming GPDs, exhibit a significant deviation from axial symmetry when the target and/or quark is transversely polarized. In combination with the final state interactions, this transverse deformation provides a natural mechanism for naive-T odd transverse single-spin asymmetries in semi-inclusive DIS. The deforma...
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Predictions for total inelastic cross-sections for photon induced processes are discussed in the context of the QCD-inspired minijet model. Large theoretical uncertainties exist, some of them related to the parton distributions of hadrons in impact parameter space. A model for such distribution is presented, based on soft gluon summation. This model incorporates (the salient features of distrib...
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An impact parameter representation for soft gluon radiation has been developed to obtain both the initial decrease in pp as well as the subsequent rise of the total cross section tot for pp and p p The rapid rise from the perturbative jets is tamed into the experimentally observed mild increase by soft gluon emission Here we focus on the role played by con nement in particular the need for a si...
متن کاملSivers Asymmetry and Generalized Parton Distributions in Impact Parameter Space
Recently, it has been pointed out that there exists a connection between the generalized parton distribution E(x, 0, t) and the Sivers asymmetry. For transversely polarized nucleon targets, generalized parton distributions are asymmetric in impact parameter space. This impact parameter space asymmetry, together with the final state interaction of the active quark, gives rise to the Sivers asymm...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 1996
ISSN: 0370-2693
DOI: 10.1016/0370-2693(96)00566-7