https://doi.org/10.1140/epjc/s10052-017-5363-y
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
* e-mail: xuji1991@sjtu.edu.cn
Received:
24
July
2017
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
