We discuss the B-meson light-cone wavefunction relevant for QCD factorization approach for exclusive B-meson decays. We derive the operator product expansion for the B-meson light-cone wavefunction, taking into account the local composite operators of dimension less than 6 and calculating the radiative corrections at order αs for the corresponding Wilson coefficients. The result embodies peculi...

We survey the current status of light meson spectroscopy. We begin with a general introduction to meson spectroscopy and and its importance in understanding the physical states of Quantum Chromo Dynamics (QCD). Phemenological models of hadron spectroscopy are described with particular emphasis on the constituent quark model and the qualitative features it predicts for the meson spectrum. We nex...

Lint ∼ g ψ̄B′ φψB , (1.1) where B′ is the resonance that decays into baryon B and meson φ and g is a coupling constant. It is crucial that this interaction Lagrangian is linear in the meson field. If φ is a pseudoscalar meson this interaction yields the decay width Γ (B′ → Bφ) ∝ g2|~ pφ|, with ~pφ being the momentum of the outgoing meson. The situation is significantly different in soliton model...

We propose a unified framework to describe the interactions of observed ${T}_{cc}$, ${P}_{c}$, and ${P}_{cs}$ within quark level interaction in our previous work. In this work, we generalize loosely bound hadronic molecules composed heavy flavor dihadrons with strangeness. predict possible ${D}^{(*)}{D}_{s}^{(*)}$ molecular states SU(3) limit masses ${P}_{c}$ as inputs. also investigate baryon-...

We investigate how the masses of singly heavy baryons undergo changes in nuclear matter, based on a medium-modified SU(3) chiral soliton model. Having explained bulk properties we discuss matter. generalize vector-meson Lagrangian including heavy-meson interaction. The mass spectrum baryon are obtained with effects explicit symmetry breaking considered as perturbation. results show that medium ...

We derive formulas for the decay constants fP and fV of pseudoscalar and vector mesons in the relativistic mock meson model. Using these formulas, we obtain fP and fV of Bs, Bd, Ds, and Dd mesons as functions of the mock meson parameter β. Then by using the values of β which are obtained by the variational method in the relativistic quark model, we obtain the decay constants fP and fV of the he...

The production of mesons in nucleon–nucleon collisions is reviewed from the viewpoint of the meson–exchange picture. In the first part various possible production mechanisms and their relative importance are discussed. In addition, general features of meson production are described. In the second part special emphasis is put on pion production. Implications of chiral perturbation theory are dis...