Perturbative T-odd asymmetries in the Drell-Yan process revisited

被引：4

作者：

Lyubovitskij, Valery E. ^{[1
,2
,3
,4
]}

Vogelsang, Werner ^{[1
]}

Wunder, Fabian ^{[1
]}

Zhevlakov, Alexey S. ^{[4
]}

机构：

[1] Univ Tubingen, Inst Theoret Phys, Kepler Ctr Astro & Particle Phys, Morgenstelle 14, D-72076 Tubingen, Germany

[2] Univ Tecn Federico Santa Maria, Dept Fis, Casilla 110-V, Valparaiso, Chile

[3] Univ Tecn Federico Santa Maria, Ctr Cientif Tecnol Valparaiso CCTVal, Casilla 110-V, Valparaiso, Chile

[4] Millennium Inst Subatom Phys High Energy Frontier, Fernandez Concha 700, Santiago, Chile

来源：

PHYSICAL REVIEW D | 2024年 / 109卷 / 11期

关键词：

SINGLE-SPIN ASYMMETRIES; LEPTON-PAIR PRODUCTION; TRANSVERSE-MOMENTUM; ANGULAR-DISTRIBUTIONS; BOSON PRODUCTION; SCATTERING; COLLISIONS; NEUTRINO;

D O I：

10.1103/PhysRevD.109.114023

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We calculate the perturbative T - odd contributions to the lepton angular distribution in the Drell-Yan process. Using collinear factorization, we work at the first order in QCD perturbation theory where these contributions appear, O ( alpha 2 s ) , and address both W +/- and gamma /Z 0 boson exchange. A major focus of our calculation is on the regime where the boson 's transverse momentum Q T is much smaller than its mass Q. We carefully expand our results up to next -to -next -to -leading power in Q T /Q. Our calculation provides a benchmark for studies of T - odd contributions that employ transverse -momentum dependent parton distribution functions. In the neutral -current case we compare our results for the T - odd structure functions to available ATLAS data.

引用

页数：19

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