Baryonic Isgur-Wise Functions in Large $N_c$ HQET
Large N_c relations among baryonic Isgur-Wise functions appearing at the order of 1/m_Q are analyzed. An application to Ω_b \to Ω_c weak decays is given.
hep-ph↗
arXiv subjects
Ming-Kai Du
Publications and source records attributed to Ming-Kai Du.
LHCb $\bigtriangleup A_{CP}$ of $D$ meson and R-Parity Violation
LHCb collaboration has recently announced a measurement of the difference of time-integrated CP asymmetries between $D\rightarrow K^+K^-$ and $D \rightarrow π^+π^-$. This result provides the evidence of large direct CP violation in $D$ meson and reveals some important implications on underlying new physics. It is shown that the direct CP violation in $D$ meson can be enhanced by R-parity violating supersymmetry, while CP violations in $K$ and $B$ mesons are suppressed by this new physics, which is in consistence with previous experiments. Constraints on the model parameters and some consequences are also discussed.
hep-ph↗
$Ω_b$ semi-leptonic weak decays
$Ω_b \rightarrow Ω_c^{(*)}$ semi-leptonic decays are studied in details. Relevant helicity amplitudes are written down. Both unpolarized and polarized $Ω_b$ cases are considered. Decay angular distributions, asymmetry parameters and semileptonic decay rates are calculated, with numerical results using leading order results of the large $N_c$ and heavy quark effective theory(HQET).
hep-ph↗