One-loop evolution of twist-2 generalized parton distributions

被引:1
|
作者
Bertone, Valerio [1 ]
del Castillo, Rafael F. [3 ]
Echevarria, Miguel G. [4 ,5 ]
del Rio, Oscar [2 ,3 ]
Rodini, Simone [6 ,7 ]
机构
[1] Univ Paris Saclay, IRFU, CEA, F-91191 Gif Sur Yvette, France
[2] Univ Complutense Madrid, Dept Fis Teor, E-28040 Madrid, Spain
[3] Univ Complutense Madrid, IPARCOS, E-28040 Madrid, Spain
[4] Univ Basque Country UPV EHU, Dept Phys, Bilbao 48080, Spain
[5] Univ Basque Country UPV EHU, EHU Quantum Ctr, Leioa 48940, Spain
[6] Deutsch Elektronen Synchrotron DESY, Notkestr 85, D-22607 Hamburg, Germany
[7] Ecole Polytech, Inst Polytech Paris, CPHT, CNRS, F-91120 Palaiseau, France
关键词
ANGULAR-MOMENTUM; DENSITIES; KERNELS;
D O I
10.1103/PhysRevD.109.034023
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We revisit the evolution of generalized parton distributions at the leading order in the strong coupling constant alpha s for all of the twist-2 quark and gluon operators. We rederive the relevant one-loop evolution kernels, expressing them in a form suitable for implementation, and check analytically that some basic properties, such as Dokshitzer-Gribov-Lipatov-Altarelli-Parisi/Efremov-Radyushkin-Brodsky-Lepage limits and polynomiality conservation, are fulfilled. We also present a number of numerical results obtained with a public implementation of the evolution in the library APFEL++ and available within the PARTONS framework.
引用
收藏
页数:21
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