Speaker
Mr
Junpei Kakazu
(Univ. of Tsukuba)
Description
We present our preliminary result of the form factor of $K \to \pi l \nu$
semileptonic decays on the large volume configuration, $L \approx 10$ fm,
with the physical $m_{\pi}$ and $m_{K}$ using the stout-smearing
clover quark and Iwasaki gauge actions at $a^{-1}=2.333$ GeV.
From an interpolation using the data in small momentum transfers,
we determine the semileptonic decay form factors at zero momentum transfer.
The result is compared with the previous lattice calculations.
We also estimate the value of $|V_{us}|$ by combining our result
with the experimental value of the kaon semileptonic decay.
Primary author
Mr
Junpei Kakazu
(Univ. of Tsukuba)
Co-authors
Dr
Ken-Ichi Ishikawa
(Graduate School of Science, Hiroshima University)
Dr
Naruhito Ishizuka
(CCS University of Tsukuba)
Takeshi Yamazaki
(Univerity of Tsukuba)
Prof.
Yoshinobu Kuramashi
(University of Tsukuba)
Dr
Yusuke Namekawa
(University of Tsukuba)
Prof.
Yusuke Taniguchi
(University of Tsukuba)
naoya ukita
(Tsukuba University)
Dr
tomoteru yoshie
(CCS University of Tsukuba)
Dr
yoshifumi Nakamura
(RIKEN CCS)