Double parton distributions in the pion in the Nambu-Jona-Lasinio model

被引：16

作者：

Courtoy, Aurore ^{[1
]}

Noguera, Santiago ^{[2
,3
]}

Scopetta, Sergio ^{[4
,5
]}

机构：

[1] Univ Nacl Autonoma Mexico, Inst Fis, Apartado Postal 20-364, Mexico City 01000, DF, Mexico

[2] Univ Valencia, CSIC, Ctr Mixto, Dept Fis Teor, E-46100 Burjassot, Valencia, Spain

[3] Univ Valencia, CSIC, Ctr Mixto, IFIC, E-46100 Burjassot, Valencia, Spain

[4] Univ Perugia, Dipartimento Fis & Geol, Via A Pascoli, I-06123 Perugia, Italy

[5] Ist Nazl Fis Nucl, Sez Perugia, Via A Pascoli, I-06123 Perugia, Italy

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2019年 / 2019卷 / 12期

关键词：

Deep Inelastic Scattering (Phenomenology); Phenomenological Models; EFFECTIVE CROSS-SECTION; LIGHT-FRONT; SCATTERING; EQUATIONS;

D O I：

10.1007/JHEP12(2019)045

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

Two-parton correlations in the pion, a non perturbative information encoded in double parton distribution functions, are investigated in the Nambu-Jona-Lasinio model. It is found that double parton distribution functions expose novel dynamical information on the structure of the pion, not accessible through one-body parton distributions, as it happens in several estimates for the proton target and in a previous evaluation for the pion, in a light-cone framework. Expressions and predictions are given for double parton distributions corresponding to leading-twist Dirac operators in the quark vertices, and to different regularization methods for the Nambu-Jona-Lasinio model. These results are particularly relevant in view of forthcoming lattice data.

引用

页数：26

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