Weak decays of doubly heavy baryons: SU(3) analysis

Abstract

(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.

Charmed baryon weak decays with SU(3) flavor symmetry

“…On the other hand, with the advantage of avoiding the detailed dynamics of QCD, the approach with SU(3) flavor (SU(3) f ) symmetry can relate decay modes in the b and c-hadron decays [22,[28][29][30][31][32][33][34][35][36][37], where the SU(3) amplitudes receive non-perturbative and non-factorizable effects, despite the unknown sources. In this paper, in terms of SU(3) f symmetry, we will examine the semileptonic and non-leptonic two-body B c decays, search for decay modes accessible to experiment, and establish the spectroscopy of the charmed baryon states.…”

Two-body weak decays of doubly charmed baryons

“…we would like to investigate in this work the nonleptonic two-body decays of doubly charmed baryons Ξ ++ cc , Ξ + cc and Ω + cc . This has been studied intensively in the literature [5][6][7][8][9][10][11][12][13][14][15][16][17][18]. Many authors [7,12,14,18] considered only the factorizable contributions from the external W -emission governed by the Wilson coefficient a 1 .…”

Magnetic moments of the spin- 1/2 doubly charmed baryons in covariant baryon chiral perturbation theory

“…Unfortunately, no other collaborations found such a state. Recently, the LHCb Collaboration observed another doubly charmed baryon state Ξ þþ cc with a mass of 3621.4 AE 0.78 MeV, which has inspired many theoretical studies on its weak [3][4][5], strong, and radiative decays [6][7][8].…”