Charmed baryon decay asymmetry in e+e- annihilation

Abstract

We propose to measure the decay asymmetry parameters in the hadronic weak decays of singly charmed baryons, such as $\ldc\to\ldπ^+,Σ^0π^+,p \bar K_0$, ${\Xi }_c^0\to {\Xi }^{-}{\pi }^{+}$ and ${\Omega }_c^0\to {\Omega }^{-}{\pi }^{+}$. The joint angular formulae for these processes are presented, and are used to extract the asymmetry parameters in $\ee$ annihilation data. Base on the current $\ldc$ data set collected at BESIII, we estimate the experimental sensitivities to measure the parameters $α_{\ldπ^+}$ for $\ldc\to\ldπ^+$, ${\alpha }_{{\Sigma }^{+}{\pi }^0}$ for $\ldc\toΣ^+π^0$ and $α_{\usigπ^+}$ for $\ldc\to\usigπ^+$.

9 pages

References in corpus (7)

• Measurements of absolute hadronic branching fractions of ${\Lambda }_c^{+}$ baryon
• Nonleptonic Weak Decays of Bottom Baryons
• Cabibbo-allowed nonleptonic weak decays of charmed baryons
• Quark and Pole Models of Nonleptonic Decays of Charmed Baryons
• A Study of Weak Mesonic Decays of ${\Lambda }_c$ and ${\Xi }_c$ Baryons on the Basis of HQET Results
• Study of the decay asymmetry parameter and CP violation parameter in the Lambdac+ --> Lambda pi+ decay
• Measurement of the Decay Asymmetry Parameters in ${\Lambda }_c^{+}\to \Lambda {\pi }^{+}$ and ${\Lambda }_c^{+}\to {\Sigma }^{+}{\pi }^0$

Cited by in corpus (10)

• Precise Measurements of Decay Parameters and $CP$ Asymmetry with Entangled $\Lambda -\bar{\Lambda }$ Pairs
• Singly Cabibbo-suppressed hadronic decays of ${\Lambda }_c^{+}$
• Study of the Standard Model with weak decays of charmed hadrons at BESIII
• Measurements of Weak Decay Asymmetries of ${\Lambda }_c^{+}\to p{K}_S^0$, $\Lambda {\pi }^{+}$, ${\Sigma }^{+}{\pi }^0$, and ${\Sigma }^0{\pi }^{+}$
• U-Spin Sum Rules for CP Asymmetries of Three-Body Charmed Baryon Decays
• Prospects for CP & P violation in ${\Lambda }_c^{+}$ decay at STCF
• Partial wave analysis of the charmed baryon hadronic decay ${\Lambda }_c^{+}\to \Lambda {\pi }^{+}{\pi }^0$
• Production and sequential decays of charmed hyperons
• Measurement of the branching fractions of the singly Cabibbo-suppressed decays ${\Lambda }_c^{+}\to p\eta$ and ${\Lambda }_c^{+}\to p\omega$
• Prospects for $P$ and $CP$ violation in ${\Lambda }_c^{+}$ decays with polarized beam at Super Tau-Charm Facility