We study the exclusive semileptonic B meson decays B− → D∗0 l− ν̄ and B̄0 → D∗+ l− ν̄ using data collected with the CLEO II detector at the Cornell Electron-positron Storage Ring (CESR). We present measurements of the branching fractions, B(B̄0 → D∗+ l− ν̄) = (0.5/f00)[4.49 ± 0.32(stat.) ± 0.39(sys.)]% and B(B− → D∗0 l− ν̄) = (0.5/f+−)[5.13 ± 0.54(stat.) ± 0.64(sys.)]%, where f00 and f+− are the neut...

Lattice simulations of B → π lν decays are problematic in the low q2 region when the pion has to have large momentum in the lattice frame for a B meson at rest or moving slowly. The movingNRQCD formalism provides a way around this by giving an accurate discretization of a b quark moving at arbitrary velocity v, and therefore a B meson moving at high momentum in the lattice frame. Here we show r...

In this paper we propose a knot model of the π mesons. In this knot model we give the formation of the π meson by strong interaction and the decay of the π meson to the moun μ and the moun neutrino νμ by weak interaction. We give a mass machanism for the generation of the masses of the π 0 meson, π meson, the moun μ and the moun neutrino νμ. PACS numbers: 12.90.+b, 12.40.Yx, 12.10.Dm.

We consider the branching ratios and CP asymmetry in the B meson decays into two pseudoscalar mesons in the generalized factorization approximation. We also investigate the possible effects of the enhanced chromomagnetic interaction b → sg on these exclusive B meson decays that was suggested as a possible solution to the semileptonic branching ratio of B mesons, the missing charm puzzle and the...

We show results for the B meson decay constant calculated both for B mesons at rest and those with non-zero momentum and using both the temporal and spatial components of the axial vector current. It is an important check of lattice systematic errors that all these determinations of fB should agree. We also describe how well different smearings for the B meson work at non-zero momentum-the opti...

We examine the applicability of perturbative QCD to B meson decays into D mesons. We find that the perturbative QCD formalism, which includes Sudakov effects at intermediate energy scales, is applicable to the semi-leptonic decay B → Dlν, when the D meson recoils fast. Following this conclusion, we analyze the two-body non-leptonic decays B → Dπ and B → DD s. By comparing our predictions with e...

The momentum distribution for the η′ meson produced through the inclusive decay B → η′X is investigated under two decay mechanisms, b → η′s and b → η′sg. Although all these two mechanisms can explain the recently observed decay rate of B → η′X, the momentum spectrums for η′ meson predicted by them are strongly different. Thus detailed experiment is proposed to distinguish the two cases.

In this paper we propose a model of the π mesons. In this model we give the formation of the π meson by strong interaction and the decay of the π meson to the moun μ and the moun neutrino νμ by weak interaction. We give a mass machanism for the generation of the masses of the π 0 meson, π + meson, the moun μ and the moun neutrino νμ. PACS numbers: 12.90.+b, 12.40.Yx, 12.10.Dm.

By adopting the relativistic Bethe-Salpeter method, OZI allowed strong decays of $2^+$ state $B^{*}_{2}(5747)^{0}$ are studied, emphasis is paid to corrections. We first study partial waves in wave functions used, find that there $P$, $D$ and $F$ meson, ratios $P:D:F=1:0.421:0.051$. also $S:P:D=1:0.354:0.046$ for $B^*$, $S:P=1:0.343$ $B$ meson. The large components $P$ $B^{(*)}$ means effects e...

The momentum distribution for the η′ meson produced through the inclusive decay B → η′X is investigated under two decay mechanisms, b → η′s and b → η′sg. Although all these two mechanisms can explain the recently observed decay rate of B → η′X, the momentum spectrums for η′ meson predicted by them are strongly different. Thus detailed experiment is proposed to distinguish the two cases.