The Drell-Yan process with pions and polarized nucleons

Journal of High Energy Physics

P. Schweitzer¹  S. Bastami¹  B. Pasquini²  B. Parsamyan³  L. Gamberg⁴  A. Prokudin⁵ 

[1] Department of Physics, University of Connecticut, 06269, Storrs, CT, USA;Dipartimento di Fisica, Università degli Studi di Pavia, Pavia, Italy;Istituto Nazionale di Fisica Nucleare, Sezione di Pavia, Pavia, Italy;Dipartimento di Fisica, Università degli Studi di Torino, Torino, Italy;Istituto Nazionale di Fisica Nucleare, Sezione di Torino, Torino, Italy;Division of Science, Penn State Berks, 19610, Reading, PA, USA;Division of Science, Penn State Berks, 19610, Reading, PA, USA;Thomas Jefferson National Accelerator Facility, 23606, Newport News, VA, USA;

关键词: Deep Inelastic Scattering (Phenomenology);   

DOI  :  10.1007/JHEP02(2021)166

来源: Springer

【 摘 要 】

The Drell-Yan process provides important information on the internal struc- ture of hadrons including transverse momentum dependent parton distribution functions (TMDs). In this work we present calculations for all leading twist structure functions de- scribing the pion induced Drell-Yan process. The non-perturbative input for the TMDs is taken from the light-front constituent quark model, the spectator model, and available parametrizations of TMDs extracted from the experimental data. TMD evolution is im- plemented at Next-to-Leading Logarithmic precision for the first time for all asymmetries. Our results are compatible with the first experimental information, help to interpret the data from ongoing experiments, and will allow one to quantitatively assess the models in future when more precise data will become available.

【 授权许可】

CC BY