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.

6 pages, 1 figure, 2 tables

References in corpus (11)

• Charmed baryon strong decays in a chiral quark model
• Structure of charmed baryons studied by pionic decays
• Observation of two new ${\Xi }_b^{-}$ baryon resonances
• Measurements of the properties of Lambda_c(2595), Lambda_c(2625), Sigma_c(2455), and Sigma_c(2520) baryons
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• Roper-like resonances with various flavor contents and their two-pion emission decays
• Novel pentaquark picture for singly heavy baryons from chiral symmetry
• Three-body decay of ${\Lambda }_c^{\ast }(2765)$ and determination of its spin-parity
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• New ${\Lambda }_b(6072{)}^0$ state as a $2S$ bottom baryon

Cited by in corpus (17)

• An updated review of the new hadron states
• Strong decay widths and mass spectra of charmed baryons
• Observation of new baryons in the ${\Xi }_b^{-}{\pi }^{+}{\pi }^{-}$ and ${\Xi }_b^0{\pi }^{+}{\pi }^{-}$ systems
• Identifying the ${\Xi }_b(6100)$ as the $P$-wave bottom baryon of $J^P=3/2^{-}$
• Novel pentaquark picture for singly heavy baryons from chiral symmetry
• 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
• Decay properties of Roper resonance in the holographic QCD
• Strong decays of singly heavy baryons from a chiral effective theory of diquarks
• Electromagnetic transition amplitude for Roper resonance from holographic QCD
• Strong decays of the low-lying doubly bottom baryons
• Measurement of the mass and width of the ${\Lambda }_c(2625{)}^{+}$ and the branching ratios of ${\Lambda }_c(2625{)}^{+}\to {\Sigma }_c^0{\pi }^{+}$ and ${\Lambda }_c(2625{)}^{+}\to {\Sigma }_c^{++}{\pi }^{-}$
• 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