We present the first lattice calculation of the B-meson binding energy Λ and of the kinetic energy −λ1/2mQ of the heavy-quark inside the pseudoscalar B-meson. This calculation has required the non-perturbative subtraction of the power divergences present in matrix elements of the Lagrangian operator h̄D4h and of the kinetic energy operator h̄ ~ D2h. The non-perturbative renormalisation of the rel...

The B Factories have demonstrated since the beginning of this decade that CP violation in the B meson system is consistent with the Standard Model (SM) description in terms of the complex phase in the three-by-three CabibboKobayashi-Maskawa (CKM) matrix [1]. With one single phase, the SM predicts clear patterns for quark mixing and CP violations, to be satisfied by all processes. The unitarity ...

We compute on the lattice the “bag” parameters of the five ∆B = 2 operators of the supersymmetric basis, by combining their values determined in full QCD and in the static limit of HQET. The extrapolation of the QCD results from the accessible heavy-light meson masses to the B-meson mass is constrained by the static result. The matching of the corresponding results in HQET and in QCD is for the...

The collaboration on B physics and CP violation (BCP) is one of the most active groups in Taiwan. In this talk I will briefly review theoretical progresses on BCP, which were made in Taiwan recently. For experimental review, please refer to Dr. Wang’s talk in this workshop. I will concentrate on five approaches to exclusive B meson decays based on factorization assumption (FA), SU(3) symmetry, ...

In recent years, the existence of a hadronically stable $\overline{b}\overline{b}ud$ tetraquark with quantum numbers $I({J}^{P})=0({1}^{+})$ was confirmed by first principles lattice QCD computations. this work we use to compare two frequently discussed competing structures for considering meson-meson as well diquark-antidiquark creation operators. We static-light approximation, where $\overlin...

Two-body non-leptonic charmed decays B(s) → D(s)P , D (s)P , D(s)V and D (s)V are analyzed in perturbative QCD approach, where P and V denote the light pseudoscalar meson and vector meson, respectively. We test the D meson wave function by a χ fit with experimental data of six B → DP channels. We give the branching ratios of all the charmed B decay channels, most of which agree with experiments...

The lightest charmed scalar meson is known as the $D_0^*(2300)$, which one of earliest new hadron resonances observed at modern $B$ factories. We show here that parameters assigned to $D$-meson are in conflict with precise LHCb data decay $B^-\to D^+ \pi^- \pi^-$. On contrary, these can be well described by an unitarized chiral amplitude containing a much lighter meson, $D_0^*(2100)$. also extr...

We show, from a diabatic analysis of Lattice results for string breaking, that mixing $Q\bar{Q}$ with open-flavor meson-meson configurations may be expressed through potential which is order $1 / m_{Q}$. A relation between the minimum breaking energy gap and tension comes out naturally. Using this relation, matching $b\bar{b}$ QCD data, we study in $c\bar{c}$ case without any additional paramet...