Transverse-momentum-dependent fragmentation functions in e+e- annihilation

被引：7

作者：

Garzia, Isabella ^{[1
]}

Giordano, Francesca ^{[2
]}

机构：

[1] Ist Nazl Fis Nucl, Sez Ferrara, I-44122 Ferrara, Italy

[2] Univ Illinois, Urbana, IL USA

来源：

EUROPEAN PHYSICAL JOURNAL A | 2016年 / 52卷 / 06期

关键词：

PHYSICS EVENT GENERATION; SIVERS ASYMMETRIES; COLLINS; PIONS; KAONS; UPDATE; SIDIS;

D O I：

10.1140/epja/i2016-16152-8

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Fragmentation functions are non-perturbative functions used to describe the formation of colorless, observable hadrons starting from a colored, partonic initial state. The knowledge of these functions are based on the experimental data, and a good parameterization of the fragmentation processes can shed light on the confining aspect of QCD, and are also a key ingredient in accessing nucleon parton distribution functions in semi-inclusive deep inelastic scattering and proton-proton collisions. In the last decade, a strong interest has risen about the transverse-momentum-dependent (TMD) fragmentation functions, which can be used as tools to probe the 3D-structure of nucleons, and to investigate the Q(2) evolution of TMD objects. In this review we will summarize the existing light-quarks fragmentation related measurements from the BaBar, Belle, and BESIII e(+)e(-) experiments; in particular, we will focus on the polarized TMD Collins fragmentation functions, emerging from correlations between the transverse polarization of the fragmenting parton and the direction of the resulting hadrons.

引用

页数：15

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