Resummation of small-x double logarithms in QCD: semi-inclusive electron-positron annihilation
Resummation of small-x double logarithms in QCD: semi-inclusive electron-positron annihilation
复制标题
QCD 中小 x 双对数的恢复:半包含电子-正电子湮灭
DOI:
10.1007/jhep10(2011)025
复制
发表时间:
2011
影响因子:
5.4
通讯作者:
A. Vogt
中科院分区:
文献类型:
--
作者:
A. Vogt
We have derived the coefficients of the highest three1/x-enhanced small-x logarithms of all timelike splitting functions and the coefficient functions for the transverse fragmentation function in one-particle inclusive e+e− annihilation at (in principle) all orders in massless perturbative QCD. For the longitudinal fragmentation function we present the respective two highest contributions. These results have been obtained from KLN-related decompositions of the unfactorized fragmentation functions in dimensional regularization and their structure imposed by the mass-factorization theorem. The resummation is found to completely remove the huge small-x spikes present in the fixed-order results, allowing for stable results down to very small values of the momentum fraction and scaling variable x. Our calculations can be extended to (at least) the corresponding αsnln2n−ℓx contributions to the above quantities and their counterparts in deep-inelastic scattering.
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DOI:
10.1016/j.cpc.2010.04.009
发表时间:
2010
期刊:
Comput. Phys. Commun.
影响因子:
--
作者:
M. Tentyukov;J. A. M. Vermaseren
通讯作者:
J. A. M. Vermaseren
影响因子:
2.8
作者:
Albino, S.;Bolzoni, P.;Kotikov, A.
通讯作者:
Kotikov, A.
影响因子:
2.8
作者:
Almasy, A. A.;Moch, S.;Vogt, A.
通讯作者:
Vogt, A.
DOI:
10.48550/arxiv.1012.3352
发表时间:
2010
期刊:
--
影响因子:
--
作者:
Almasy A
通讯作者:
Almasy A