The 24th International Spin Symposium

18-22 October 2021
Matsue, Shimane Prefecture, Japan
Asia/Tokyo timezone

Nucleon isovector tensor charge from lattice QCD with physical light quark masses

19 Oct 2021, 21:20
20m
Room 601 (Kunibiki Messe)

Room 601

Kunibiki Messe

Parallel Session Presentation Transverse momentum structure (TMD)

Speaker

Ryutaro Tsuji (Tohoku University)

Description

We will present the current status of nucleon structure studies with physical light quarks ($m_\pi$ = 135 MeV) in two large spatial extents of about 10 and 5 fm. Our calculations are performed on 2+1 flavor gauge configurations generated by PACS collaboration with the stout-smeared $O(a)$ improved Wilson fermions and Iwasaki gauge action at $\beta$=1.82 corresponding to the lattice spacing of about 0.08 fm. In this talk, we mainly focus on nucleon isovector couplings of axial vector, scalar and tensor channels. Especially, the tensor coupling is known as the 1st Mellin moment of transversely parton distribution function and is itself related to the information of the quark-EDM.

Primary author

Ryutaro Tsuji (Tohoku University)

Co-authors

Ken-Ichi Ishikawa (Hiroshima University, Department of Physical Science) Yasumichi Aoki (KMI, Nagoya University) Takeshi Yamazaki (University of Tsukuba) Shoichi Sasaki (Tohoku University) Prof. Yoshinobu Kuramashi (Center for Computational Sciences, University of Tsukuba)