Exploring the nucleon partonic structure with Drell-Yan process by COMPASS experiment

Wen-Chen Chang (章文箴)¹, Chia-Yu Hsieh (謝佳諭)^1,2, Yu-Shiang Lian^1,3, Marcia Quaresma^1*

¹Institute of Physics, Academia Sinica, Taipei, Taiwan
²Department of Physics, National Central University, Taoyuan, Taiwan
³Department of Physics, National Kaohsiung University, Kaohsiung, Taiwan

* Presenter:Marcia Quaresma, email:marciaq@gate.sinica.edu.tw

In the fixed-target COMPASS experiment at CERN, the transverse momentum dependent parton density functions, such like Sivers functions and Boer-Mulders functions, as well as the partonic structure of pions, are explored by the pion-induced Drell-Yan process with 190-GeV pion beam and transversely polarized NH3 and nuclear targets. We have achieved successful data-taking in 2015 and 2018. In this talk, we will report the status of Drell-Yan program and the recent results available by then. We will also introduce the experimental program after the second LHC long shutdown.

Keywords: Drell-Yan, QCD, hadronic physics, PDFs, CERN