In the past years there has been a revival of hadron spectroscopy. Many interesting new
hadron states were discovered experimentally, some of which do not fit easily into the quark …

We review the calculations of form factors and coupling constants in vertices with charm
mesons in the framework of QCD sum rules. We first discuss the motivation for this work …

The effects of intermediate charmed mesons on charmonium transitions with the emission of
one pion or eta are studied systematically. Based on a nonrelativistic effective field theory …

Nonleptonic B to charmonium decays generally show deviations from the factorization
predictions. For example, the mode B−→ K− χ c 0 has been experimentally observed with a …

The weak decays of Λ b→ Λ+ γ and Λ b→ Λ+ l+ l− are investigated in the standard model
using the light-cone sum-rule approach. The higher-twist distribution amplitudes of the Λ …

The X (3872) resonance is considered as a hadronic molecule, a loosely bound state of
charmed D 0 and D* 0 mesons, since its mass is very close to the D* 0 D¯ 0 threshold …

The mass shift of charmonium states in nuclear matter is studied in the perturbative QCD
approach. The leading-order effect due to the change of gluon condensate in nuclear matter …

We reexamine the rescattering mechanism for the X (3872), as a candidate for the 2P
charmonium state χ c 1 (2 P), decaying to J/ψ ρ (ω) through exchanging D (*) mesons …

Light-cone sum rules for the Λ b→ p, Λ transition form factors are derived from the correlation
functions expanded by the twist of the distribution amplitudes of the Λ b baryon. In terms of …

Within the standard model, we investigate the semi-leptonic weak decays of J/ψ. The various
form factors of J/ψ making the transition to a single charmed meson (D (*)(d, s)) are studied …