Small x resummation with quarks: Deep-inelastic scattering
Small x resummation with quarks: Deep-inelastic scattering
复制标题
夸克的小 x 恢复:深度非弹性散射
DOI:
10.1016/j.nuclphysb.2008.03.003
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发表时间:
2008
影响因子:
2.8
通讯作者:
Altarelli G
中科院分区:
文献类型:
--
作者:
Altarelli G
We extend our previous results on small-x resummation in the pure Yang–Mills theory to full QCD with nfquark flavours, with a resummed two-by-two matrix of resummed quark and gluon splitting functions. We also construct the corresponding deep-inelastic coefficient functions, and show how these can be combined with parton densities to give fully resummed deep-inelastic structure functions F2and FLat the next-to-leading logarithmic level. We discuss how this resummation can be performed in different factorization schemes, including the commonly used MS¯ scheme. We study the importance of the resummation effects by comparison with fixed-order perturbative results, and we discuss the corresponding renormalization and factorization scale variation uncertainties. We find that for x below 10−2the resummation effects are comparable in size to the fixed order NNLO corrections, but differ in shape. We finally discuss the phenomenological impact of the small-x resummation, specifically in the extraction of parton distribution from present day experiments and their extrapolation to the kinematics relevant for future colliders such as the LHC.
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影响因子:
4.4
作者:
R. Ball;S. Forte
通讯作者:
S. Forte
DOI:
10.1016/j.nuclphysb.2003.09.040
发表时间:
2003
期刊:
Nuclear Physics
影响因子:
--
作者:
G. Altarelli;Richard D.Ball;S. Forte
通讯作者:
S. Forte
影响因子:
4.4
作者:
R. Ball;S. Forte
通讯作者:
S. Forte
DOI:
--
发表时间:
1995
期刊:
影响因子:
--
作者:
M. Ciafaloni
通讯作者:
M. Ciafaloni
DOI:
--
发表时间:
1998
期刊:
影响因子:
--
作者:
M. Ciafaloni;D. Colferai
通讯作者:
D. Colferai