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Structure of charmed baryons studied by pionic decays

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arxiv 1609.01085 v1 pith:L6KPJ26S submitted 2016-09-05 hep-ph nucl-th

Hideko Nagahiro , Shigehiro Yasui , Atsushi Hosaka , Makoto Oka , Hiroyuki Noumi This is my paper · ORCID
classification hep-phnucl-th
keywords lambdabaryonsexcitedsigmacharmeddecaydecaysgamma
verification ladder T0 review T1 audit T2 compute T3 formal
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We investigate the decays of the charmed baryons aiming at the systematic understanding of hadron internal structures based on the quark model by paying attention to heavy quark symmetry. We evaluate the decay widths from the one pion emission for the known excited states, \Lambda_c^*(2595), \Lambda_c^*(2625), \Lambda_c^*(2765), \Lambda_c^*(2880) and \Lambda_c^*(2940), as well as for the ground states \Sigma_c(2455) and \Sigma_c^*(2520). The decay properties of the lower excited charmed baryons are well explained, and several important predictions for higher excited baryons are given. We find that the axial-vector type coupling of the pion to the light quarks is essential, which is expected from chiral symmetry, to reproduce the decay widths especially of the low lying \Lambda_c^* baryons. We emphasize the importance of the branching ratios of \Gamma(\Sigma_c^*\pi)/\Gamma(\Sigma_c\pi) for the study of the nature of higher excited \Lambda_c^* baryons.

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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. Inverse Excitation Hierarchy in Doubly-Heavy Tetraquarks within the Diquark Model

    hep-ph 2026-03 conditional novelty 6.0 of 10

    In a diquark-model calculation, the ρ-mode excitation of Tcc (inside the light diquark) lies below the λ-mode excitation (between diquarks), an 'inverse hierarchy' driven by the light diquark's large size.

  2. Radiative decays of $P$-wave charmed baryons in the $SU(3)$ flavor $\bf6_F$ representation

    hep-ph 2025-06 conditional novelty 6.0 of 10

    The authors predict radiative decay widths for all P-wave charmed baryons in the 6F representation, and propose Omega_c gamma channels as the best route to identify the excited Omega_c states seen at LHCb.

  3. Revisit the diquark of $\Lambda_c$ in the $\Lambda_c\to \Lambda K^+$ and $\Lambda_c\to \Sigma^0 K^+$ processes

    hep-ph 2025-07 conditional novelty 4.0 of 10

    Constituent quark model fits to Λc→ΛK+ and Λc→Σ0K+ branching ratios place the charmed baryon's diquark size parameters in a narrow, non-compact region.

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