ar X iv : h ep - p h / 00 05 10 2 v 1 1 1 M ay 2 00 0 1 Semi - Leptonic B Meson Decays to Excited D Mesons in the Covariant Oscillator Quark Model

ar X iv : h ep - p h / 00 05 19 0 v 1 1 8 M ay 2 00 0 1 Covariant Quark - Representation of Composite Meson Systems and Chiral Symmetry

Assuming the spin-independence for confining force, we give a covariant quark representation of general composite meson systems with definite Lorentz transformation properties. For benefit of this representation we are able to deduce automatically the transformation rules of composite mesons for general symmetry operations from those of constituent (exciton) quarks. Applying this we investigate...

ar X iv : h ep - l at / 0 61 01 08 v 1 1 9 O ct 2 00 6 Λ̄ , λ 1 and m b in three - flavor ( lattice ) QCD

The heavy-quark expansion for inclusive semi-leptonic B decays introduces Λ̄ and λ1, which are matrix elements in heavy-quark effective field theory. We review how they can be obtained from an analysis of the heavy quark mass dependence of heavy-light meson masses in lattice QCD. We present preliminary results for the bottom quark mass, mb, using Λ̄ and λ1 for the Bs meson from a 2+1 sea-flavor u...

ep - p h / 07 03 27 2 v 1 2 6 M ar 2 00 7 Structure of Light Scalar Mesons from D s and D 0 Non - Leptonic Decays

Non-leptonic D meson decays may provide a reliable testbed for the multiquark interpretation of light scalar mesons. In this letter we consider D s decay and show that a 4-quark f 0 (980) meson could induce a decay pattern, which is forbidden for a q ¯ q constituent structure. Experimental tests to probe such possibilities are within reach in the near future.

ar X iv : h ep - p h / 05 05 16 1 v 1 1 8 M ay 2 00 5 Productions of σ meson in J / ψ and ψ ( 2 s ) decays Bing

Productions of σ meson in J/ψ and ψ(2s) decays Abstract Productions of scalar meson(σ) in the decays of J/ψ → ω + σ,J/ψ → γ + σ and ψ(2s) → ω + σ, J/ψ + σ, γ + σ and ee + annihilations in the regions of J/ψ and ψ are studied 1

ar X iv : h ep - p h / 02 05 01 6 v 1 2 M ay 2 00 2 Scalar a 0 ( 980 ) meson in φ → π 0 ηγ decay