Speaker
Kohei Sato
(University of Tsukuba)
Description
We investigate an improved analysis method of the recently-proposed model-independent method to obtain the pion charge radius from the electromagnetic pion three-point function. We discuss a systematic error of the original method in small volume, and propose an improvement to reduce it. Using the $N_f = 2+1$ lattice QCD data at $m_\pi = 0.51$ GeV, we compare the result of the pion charge radius from our improved method with the ones from the original method, and also from a traditional model-dependent method.
Primary author
Kohei Sato
(University of Tsukuba)
Co-authors
Dr
Hiromasa Watanabe
(KEK)
Takeshi Yamazaki
(University of Tsukuba)
