A new two-step Gaussian expansion method enables high-precision calculation of fine structure in negative-parity singly heavy baryons via the relativized quark model, reproducing data to <5 MeV average deviation.
Combined Chiral Dynamics and MIT Bag Model Study of Strong \Sigma^{(*)}_Q \to \Lambda_Q\pi Decays
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abstract
The strong decays of the heavy baryons \Sigma^{(*)}_Q \to \Lambda_Q \pi are studied by combining the chiral dynamics and the MIT bag model. In charm sector, we calculate the decay widths \Gamma(\Sigma^{(*)}_c\to \Lambda_c\pi) and compare with the experimental data and other theoretical estimations. In addition, we also predict the strong decay widths \Gamma(\Sigma^{(*)}_b\to \Lambda_b\pi).
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hep-ph 1years
2026 1verdicts
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Spin-dependent interactions and fine structure in the negative-parity singly heavy baryons
A new two-step Gaussian expansion method enables high-precision calculation of fine structure in negative-parity singly heavy baryons via the relativized quark model, reproducing data to <5 MeV average deviation.