H. Yan

collaborators

3 papers

hep-ph1998

Exclusive Rare Decays of Heavy Baryons to Light Baryons: $Λ_b \ri ghtarrow Λγ$ and $Λ_{b} \to Λ l^{+} l^{-}$

Chao-Shang Huang, Hua-Gang Yan

Rare decays $Λ_{b} \to Λ γ$ and $Λ_{b} \to Λ l^{+} l^{-}$ (l= e, $μ$ ) are examined. We use QCD sum rules to calculate the hadronic matrix elements governing the decays. The $Λ$ polarizat…

hep-ph1998

Decay $Λ_{b} \to pl ν ˉ$ in QCD sum rules

Chao-Shang Huang, Cong-Feng Qiao, Hua-Gang Yan

The $Λ_{b} \to p$ semileptonic decay is analyzed by using QCD sum rules within the framework of heavy quark effective theory. The Isgur-Wise function of $Λ_{b} \to pl ν ˉ$ has been…

hep-ph1997

Polarized Λ_b \to X_c τνin the SM and THDM

Chao-Shang Huang, Hua-Gang Yan

The inclusive rate and $τ$ spectrum for a polarized $Λ_{b}$ -baryon to decay to charm hadronic final states and leptons $τ ν$ in the SM and a two-Higgs doublet model are computed.The…

Exclusive Rare Decays of Heavy Baryons to Light Baryons: $Λ_b \ri ghtarrow Λγ$ and Λb​→Λl+l−

Decay Λb​→plνˉ in QCD sum rules

Polarized Λ_b \to X_c τνin the SM and THDM

Exclusive Rare Decays of Heavy Baryons to Light Baryons: $Λ_b \ri ghtarrow Λγ$ and $Λ_{b} \to Λ l^{+} l^{-}$

Decay $Λ_{b} \to pl ν ˉ$ in QCD sum rules