Weak decays of heavy baryons in the light-front approach

Zhen-Xing Zhao

doi:10.1088/1674-1137/42/9/093101

Chinese Physics C> 2018, Vol. 42> Issue(9) : 093101 DOI: 10.1088/1674-1137/42/9/093101

Weak decays of heavy baryons in the light-front approach

Zhen-Xing Zhao ^,

1.
INPAC, Shanghai Key Laboratory for Particle Physics and Cosmology, MOE Key Laboratory for Particle Physics, Astrophysics and Cosmology, School of Physics and Astronomy, Shanghai Jiao-Tong University, Shanghai 200240, China

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Abstract：
In this work, we analyse semi-leptonic and non-leptonic weak decays of the heavy baryons:∧_b,Ξ_b,Ω_b and ∧_c,Ξ_c,Ω_c. For non-leptonic decay modes, we study only the factorizable channels induced by the external W-emission. The two spectator quarks in the baryonic transitions are treated as a diquark and form factors are calculated in the light-front approach. Using the results for form factors, we also calculate some corresponding semi-leptonic and non-leptonic decay widths. We find that our results are comparable with the available experimental data and other theoretical predictions. Decay branching fractions for many channels are found to reach the level 10^-3~10^-2, which is promising for discovery in future measurements at BESⅢ, LHCb and Belle Ⅱ. The SU(3) symmetry in semi-leptonic decays is examined and sources of symmetry breaking are discussed.
- heavy baryons ,
- weak decay ,
- light-front approach

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Zhen-Xing Zhao. Weak decays of heavy baryons in the light-front approach[J]. Chinese Physics C, 2018, 42(9): 093101. doi: 10.1088/1674-1137/42/9/093101

Zhen-Xing Zhao. Weak decays of heavy baryons in the light-front approach[J]. Chinese Physics C, 2018, 42(9): 093101. doi: 10.1088/1674-1137/42/9/093101 shu

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Weak decays of heavy baryons in the light-front approach

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