Exploring the Nucleon Partonic Structure by Drell-Yan Process
Wen-Chen Chang (章文箴)1*, Rurng-Sheng Guo (郭榮升)2, Takahiro Sawada (澤田崇広)1, Shu-Yin Wang (王素音)1,2, Shiuan-Hal Shiua (許軒豪)1,3, Chia-Yu Hsieh (謝佳諭)1,3, Yu-Shiang Lian (連昱翔)1,2, Hsi-Hong Yao (姚錫泓)1
1Institute of Physics, Academia Sinica, Taipei, Taiwan
2Department of Physics, National Kaohsiung Normal University, Kaohsiung, Taiwan
3Department of Physics, National Central University, Zhongli, Taiwan
* presenting author:Wen-Chen Chang, email:changwc@phys.sinica.edu.tw
It is well known that the deep inelastic scattering (DIS) and Drell-Yan (DY) processes are the key experimental approaches to reveal the partonic structure of nucleons. The Drell-Yan process is particularly important for understanding the anti-quark content and also the transverse momentum dependent (TMD) parton density functions (PDF) without the ambiguity of fragmentation process. In this talk we will report the results of flavour asymmetry of anti-quark ubar/dbar as well as the Sivers functions and Boer-Mulders functions of valence quarks in nucleons from two recent Drell-Yan experiments: E906/SeaQuest experiment at Fermilab and COMPASS experiment at CERN. In addition we will address the feasibility of measuring the exclusive pion-induced Drell-Yan process at J-PARC in Japan such that the generalized parton distributions of nucleon could be explored.

Keywords: partonic structure, Drell-Yan process, nucleon