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Weak Decays of Doubly Heavy Baryons: SU(3) Analysis

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arxiv 1707.06570 v2 pith:THDFXU5C submitted 2017-07-20 hep-ph hep-ex

Wei Wang , Zhi-Peng Xing , Ji Xu This is my paper · ORCID
classification hep-phhep-ex
keywords decaydecaysomegaamplitudesbaryonsdoublyfutureheavy
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

Motivated by the recent LHCb observation of doubly-charmed baryon $\Xi_{cc}^{++}$ in the $\Lambda_c^+ K^-\pi^+\pi^+$ final state, we analyze the weak decays of doubly heavy baryons $\Xi_{cc}$, $\Omega_{cc}$, $\Xi_{bc}$, $\Omega_{bc}$, $\Xi_{bb}$ and $\Omega_{bb}$ under the flavor SU(3) symmetry. 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 are measured in future, some of these relations may provide hints for exploration of new decay modes.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Flavor SU(3) analysis of the charmless semileptonic $B \to PV\ell^+\nu_\ell$ decays

    hep-ph 2025-07 conditional novelty 6.0 of 10

    The paper predicts branching ratios of charmless B to PV l nu decays mediated by axial-vector, tensor, and excited vector resonances using SU(3) flavor symmetry, finding several modes at 10^-4 to 10^-3.

  2. The effects of polarization on the observables in the decay $\Xi_{cc}^{++} \rightarrow \Xi_{c}^{+} \bar{\ell}\nu_{\ell}$

    hep-ph 2026-03 accept novelty 5.5 of 10

    Polarization of the parent baryon, daughter baryon, and muon strongly reshapes branching ratios, forward-backward asymmetries, and newly defined polarization ratios in Ξ_cc++ → Ξ_c+ ℓ ν, while the μ/e LFU ratio stays ...

  3. Hadrons in group expansion

    hep-ph 2025-06 conditional novelty 4.0 of 10

    Ground-state baryon masses are parametrized by mixing SU(4) flavor representations, with estimated Sigma_c being 72% 20M and 28% 20S, and Xi_c being 90% anti-triplet and 10% sextet.

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