Regular Article - Theoretical Physics
Weak decays of doubly heavy baryons: SU(3) analysis
INPAC, Shanghai Key Laboratory for Particle Physics and Cosmology, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, 200240, China
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Accepted: 3 November 2017
Published online: 23 November 2017
Motivated by the recent LHCb observation of doubly charmed baryon in the final state, we analyze the weak decays of doubly heavy baryons , , , , and under the flavor SU(3) symmetry. The decay amplitudes for various semileptonic and nonleptonic decays are parametrized in terms of a few SU(3) irreducible amplitudes. We find a number of relations or sum rules between decay widths and CP asymmetries, which can be examined in future measurements at experimental facilities like LHC, Belle II and CEPC. Moreover, once a few decay branching fractions have been measured in the future, some of these relations may provide hints for exploration of new decay modes.
© The Author(s), 2017