Unintegrated parton distributions and prompt photon hadroproduction
نویسندگان
چکیده
منابع مشابه
Unintegrated parton distributions and prompt photon hadroproduction
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...
متن کاملUnintegrated 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...
متن کاملUnintegrated double parton distributions
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...
متن کاملUnintegrated generalised parton distributions
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...
متن کاملSudakov Resummation Effects in Prompt-Photon Hadroproduction
We compute the effects of soft-gluon resummation, at the next-to-leading-logarithmic level, in the fixed-target hadroproduction cross section for prompt photons. We find in general that the corrections to the fixed next-to-leading-order results are large for large renormalization scales, and small for small scales. This leads to a significant reduction of the scale dependence of the results for...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The European Physical Journal C
سال: 2000
ISSN: 1434-6044,1434-6052
DOI: 10.1007/s100520000326