Towards a Global QCD Analysis of Fragmentation Functions at Next-to-Next-to-Leading Order Accuracy

被引：30

作者：

Borsa, Ignacio ^{[1
,2
]}

Sassot, Rodolfo ^{[1
,2
]}

de Florian, Daniel ^{[3
,4
]}

Stratmann, Marco ^{[5
]}

Vogelsang, Werner ^{[5
]}

机构：

[1] Univ Buenos Aires, Dept Fis, Fac Ciencias Exactas & Nat, Ciudad Univ,Pabellon 1, RA-1428 Buenos Aires, DF, Argentina

[2] Univ Buenos Aires, IFIBA, Fac Ciencias Exactas & Nat, Ciudad Univ,Pabellon 1, RA-1428 Buenos Aires, DF, Argentina

[3] UNSAM, Int Ctr Adv Studies ICAS, Campus Miguelete,25 Mayo & Francia, RA-1650 Buenos Aires, DF, Argentina

[4] UNSAM, IFICI, Campus Miguelete,25 Mayo & Francia, RA-1650 Buenos Aires, DF, Argentina

[5] Univ Tubingen, Inst Theoret Phys, Morgenstelle 14, D-72076 Tubingen, Germany

来源：

PHYSICAL REVIEW LETTERS | 2022年 / 129卷 / 01期

关键词：

PARTON DISTRIBUTIONS; EVOLUTION;

D O I：

10.1103/PhysRevLett.129.012002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We carry out a global QCD analysis of parton-to-pion fragmentation functions at next-to-next-to-leading order (NNLO) accuracy by performing a fit to the combined set of single-inclusive electron-positron annihilation and, for the first time, semi-inclusive deep-inelastic scattering multiplicity data. For the latter, we utilize the approximate NNLO QCD corrections that were derived recently within the threshold resummation formalism. We explore the impact of the NNLO corrections on the description of the semiinclusive deep-inelastic scattering datasets in various kinematic regimes and on the resulting pion fragmentation functions.

引用

页数：6

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