Form factors for semi-leptonic $B$ decays
Form factors for semi-leptonic $B$ decays
复制标题
半轻子 $B$ 衰变的形状因数
DOI：
10.22323/1.256.0296
复制
发表时间：
2016
期刊：
影响因子：
--
通讯作者：
O. Witzel
中科院分区：
文献类型：
--
作者：
J. Flynn;T. Izubuchi;A. Juttner;T. Kawanai;C. Lehner;Edwin Lizarazo;A. Soni;J. Tsang;O. Witzel
Semi-leptonic $B$ decays provide promising channels to test the Standard Model, search for signs of new physics, or determine fundamental parameters like CKM matrix elements. We present an update on our calculation of short distance contributions to GIM suppressed rare $B$ decays focusing in particular on $B_s\to \phi \ell^+ \ell^-$ decays. Furthermore we show first results for our calculation of $B_{(s)}\to D_{(s)}^{(*)}\ell\nu$ semi-leptonic decays involving $b\to c$ transitions. Our calculations are based on RBC-UKQCD's 2+1 flavor domain-wall fermion and Iwasaki gauge field configurations featuring three lattice spacings in the range $1.73$ GeV $\le a^{-1} \le 2.77$ GeV and pion masses down to the physical value. We calculate the form factors by simulating $b$-quarks using the relativistic heavy quark action, create light $u/d$ and $s$ quarks with standard domain-wall kernel, and use optimised Mobius domain-wall fermions for charm quarks.
影响因子：
5
作者：
Y. Aoki;N. Christ;J. Flynn;T. Izubuchi;C. Lehner;Min Li;Hao Peng;A. Soni;R. V. D. Water;O. Witzel
通讯作者：
Y. Aoki;N. Christ;J. Flynn;T. Izubuchi;C. Lehner;Min Li;Hao Peng;A. Soni;R. V. D. Water;O. Witzel