Semileptonic decays of ${\Lambda }_c$ baryons in the relativistic quark model

Abstract

Motivated by recent experimental progress in studying weak decays of the ${\Lambda }_c$ baryon we investigate its semileptonic decays in the framework of the relativistic quark model based on the quasipotential approach with the QCD-motivated potential. The form factors of the ${\Lambda }_c\to \Lambda l{\nu }_l$ and ${\Lambda }_c\to nl{\nu }_l$ decays are calculated in the whole accessible kinematical region without extrapolations and additional model assumptions. Relativistic effects are systematically taken into account including transformations of baryon wave functions from the rest to moving reference frame and contributions of the intermediate negative-energy states. Baryon wave functions found in the previous mass spectrum calculations are used for the numerical evaluation. Comprehensive predictions for decay rates, asymmetries and polarization parameters are given. They agree well with available experimental data.

12 pages, 6 figures, published version. arXiv admin note: text overlap with arXiv:1609.00199

References in corpus (7)

• Big-Bang Nucleosynthesis
• Spectroscopy and Regge trajectories of heavy baryons in the relativistic quark-diquark picture
• Mass spectra and Regge trajectories of light mesons in the relativistic quark model
• Masses of excited heavy baryons in the relativistic quark-diquark picture
• The semileptonic decay Lambda_b -> Lambda_c + tau(-) + antinu_tau in the covariant confined quark model
• Semileptonic decays of ${\Lambda }_b$ baryons in the relativistic quark model
• Heavy-to-light semileptonic decays of Lambda_b and Lambda_c baryons in the covariant confined quark model

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