Speaker
Dr
Yusuke Namekawa
(University of Tsukuba)
Description
We evaluate scattering lengths by use of a scattering amplitude
calculated with the Bethe-Salpeter wave function
inside the interaction range.
Scattering lengths of I=2 two pions are computed
by both conventional and our methods
with $m_\pi = 0.52-0.86$ GeV in the quenched lattice QCD.
The results are compared with each other to confirm consistency.
Furthermore, a half off-shell amplitude is calculated.
Primary author
Dr
Yusuke Namekawa
(University of Tsukuba)
Co-author
Takeshi Yamazaki
(Univerity of Tsukuba)