QCD corrections of all structure functions in transverse momentum dependent factorization for Drell-Yan processes
QCD corrections of all structure functions in transverse momentum dependent factorization for Drell-Yan processes
复制标题
Drell-Yan 过程横向动量相关分解中所有结构函数的 QCD 校正
DOI:
10.1007/jhep02(2014)100
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发表时间:
2013-08
期刊:
影响因子:
--
通讯作者:
Zhang, G. P.
中科院分区:
文献类型:
--
作者:
Ma, J. P.;Zhang, G. P.
A bstractWe study the one-loop correction in Transverse-Momentum-Dependent(TMD) factorization for Drell-Yan processes at small transverse momentum of the lepton pair. We adopt the so-called subtractive approach, in which one can systematically construct contributions for subtracting long-distance effects represented by diagrams. The perturbative parts are obtained after the subtraction. We find that the perturbative coefficients of all structure functions in TMD factorization at leading twist are the same. The perturbative parts can also be studied with scattering of partons instead of hadrons. In this way, the factorization of many structure functions can only be examined by studying the scattering of multi-parton states, where there are many diagrams. These diagrams have no similarities to those treated in the subtractive approach. As an example, we use existing results of one structure function responsible for Single-Spin-Asymmetry, to show that these diagrams in the scattering of multi-parton states are equivalent to those treated in the subtractive approach after using Ward identity.
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影响因子:
3.1
作者:
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通讯作者:
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DOI:
10.1016/0370-1573(81)90036-3
发表时间:
1981-03
期刊:
Physics Reports
影响因子:
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通讯作者:
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5
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