https://doi.org/10.1140/epjc/s10052-021-09779-1
Regular Article - Theoretical Physics
Angular distributions for multi-body semileptonic charmed baryon decays
1
INPAC, Key Laboratory for Particle Astrophysics and Cosmology (MOE), Shanghai Key Laboratory for Particle Physics and Cosmology, School of Physics and Astronomy, Shanghai Jiao Tong University, 200240, Shanghai, China
2
School of Physics, Beihang University, 102206, Beijing, China
3
Tsung-Dao Lee Institute, Shanghai Jiao Tong University, 200240, Shanghai, China
Received:
22
August
2021
Accepted:
27
October
2021
Published online:
7
January
2022
We perform an analysis of angular distributions in semileptonic decays of charmed baryons , where the are the SU(3)-antitriplet baryons and is an SU(3) sextet. We will firstly derive analytic expressions for angular distributions using the helicity amplitude technique. Based on the lattice quantum chromodynamics (QCD) results for and form factors and model calculation of the transition, we predict the branching fractions: , , , , , . We also predict the dependence and angular distributions of these processes, in particular the coefficients for the (, ) terms. This work can provide a theoretical basis for the ongoing experiments at BESIII, LHCb, and BELLE-II.
© The Author(s) 2022
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