Unintegrated generalized parton distributions
نویسندگان
چکیده
منابع مشابه
Unintegrated parton distributions
We describe how to calculate the parton distributions fa(x, k 2 t , μ 2), unintegrated over the parton transverse momentum kt, from auxiliary functions ha(x, k 2 t ), which satisfy single-scale evolution equations. The formalism embodies both DGLAP and BFKL contributions, and accounts for the angular ordering which comes from coherence effects in gluon emission. We check that the unintegrated d...
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We present the construction of unintegrated double parton distribution functions which include dependence on transverse momenta of partons. We extend the formulation which was used to obtain the single unintegrated parton distributions from the standard, integrated parton distribution functions. Starting from the homogeneous part of the evolution equations for the integrated double parton distr...
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We show how the generalised (or skewed) parton distributions of the proton,H(x, ξ; k t , μ ), unintegrated over the partonic transverse momenta, can be calculated from the known conventional parton distributions, q(x, μ) and g(x, μ), for small values of the skewedness parameter ξ. We demonstrate the procedure by numerically evaluating the skewed unintegrated gluon. We also provide a simple appr...
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We introduce a general expression which enables the parton distribution, unintegrated over the parton transverse momentum, to be obtained from the conventional parton densities. We use the formalism to study the effects of the transverse momentum qt of the incoming partonic system on the calculation of the transverse momentum spectra of prompt photons produced in high energy pp and pp̄ collision...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2001
ISSN: 0556-2821,1089-4918
DOI: 10.1103/physrevd.64.094017