Unintegrated parton distributions and prompt photon hadroproduction
Unintegrated parton distributions and prompt photon hadroproduction
复制标题
未积分的部分子分布和即时光子强子产生
DOI:
10.1007/s100520000326
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发表时间:
1999
期刊:
影响因子:
--
通讯作者:
M. Ryskin
中科院分区:
文献类型:
--
作者:
M. A. Kimber;Alan D. Martin;M. Ryskin
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 momentumof the incoming partonic system on the calculation of the transverse momentum spectra of prompt photons produced in high energyppandcollisions. For the purposes of illustration, we use the double logarithm approximation. For largewe calculate the effect directly from the perturbative formalism, whereas for smallwe bound the effect using two extreme hypotheses. In bothdomains we find that the shapes of the prompt photon spectra are not significantly modified, although the cross sections are enhanced.