Semileptonic decays of baryons in a relativistic quark model

Abstract

We calculate semileptonic decays of light and heavy baryons in a relativistically covariant constituent quark model. The model is based on the Bethe-Salpeter-equation in instantaneous approximation. It generates satisfactory mass spectra for mesons and baryons up to the highest observable energies. Without introducing additional free parameters we compute on this basis helicity amplitudes of electronic and muonic semileptonic decays of baryons. We thus obtain form factor ratios and decay rates in good agreement with experiment.

arXiv comment8 pages, 10 figures, 2 tables, typos removed

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Cited by in corpus (14)

• Baryon spectroscopy
• 50 Years of Quantum Chromodynamics
• Charmed baryons in a relativistic quark model
• Delta and Omega electromagnetic form factors in a Dyson-Schwinger/Bethe-Salpeter approach
• Nucleon resonances in the fourth resonance region
• Revisiting semileptonic decays of ${\Lambda }_{b(c)}$ supported by baryon spectroscopy
• Delta-baryon mass in a covariant Faddeev approach
• Improved analysis on the semi-leptonic decay ${\Lambda }_c\to \Lambda {\ell }^{+}\nu$ from QCD light-cone sum rules
• Hyperon semileptonic decays in QCD sum rules
• Chiral corrections to the vector and axial couplings of quarks and baryons
• Static properties and Semileptonic transitions of lowest-lying double heavy baryons
• Semileptonic decay and form factors of ${\Omega }_b^{-}\to {\Omega }_c^{0}e\overline{{\nu }_e}$
• Baryons and baryoniums in the perspective of QCD sum rules
• Semileptonic decay form factors of ${\Xi }_b^0\to {\Xi }_c^{+}\ell {\bar{\nu }}_{\ell }$ in HQET