Relativistic corrections to decays of heavy baryons in the quark model

Abstract

We investigate relativistic corrections of order $1/m^2$, where $m$ is the constituent quark mass, to heavy baryon decays by emitting one pseudoscalar meson in the quark model. This work is motivated by shortcomings in the previous studies in the nonrelativistic quark model for decays of the Roper-like states such as ${\Lambda }_c(2765)$. We find that the relativistic corrections due to the internal motion of quarks are essential ingredients in improving their decay properties such that the decay widths are significantly increased. In addition, such corrections can explain a phenomenological suppression of the quark axial-vector coupling constant $g_A^q$ for the ${\Sigma }_c(2455)$ and ${\Sigma }_c(2520)$ decays.

arXiv comment6 pages, 1 figure, 2 tables

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Cited by in corpus (17)

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• Identifying the ${\Xi }_b(6100)$ as the $P$-wave bottom baryon of $J^P=3/2^{-}$
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• Understanding the nature of $\Omega (2012)$ in a coupled-channel approach
• Self-consistent $M1$ radiative transitions of excited $B_c$ and heavy quarkonia with different polarizations in the light-front quark model
• Decays of Roper-like singly heavy baryons in a chiral model
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• Electromagnetic transition amplitude for Roper resonance from holographic QCD
• Strong decays of the low-lying doubly bottom baryons
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• Doubly charmed baryon decays ${\Xi }_{cc}^{++}\to {\Xi }_c^{(\prime )+}{\pi }^{+}$ in the quark model
• Decay properties of $N(1535)$ in the holographic QCD
• Chiral effective theory of scalar and vector diquarks revisited
• Probing the inner structures of the observed ${\Xi }_b$ and ${\Xi }_b^{\prime }$ resonances