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.

arXiv comment12 pages, 6 figures, published version. arXiv admin note: text overlap with arXiv:1609.00199

References in corpus (27)

• Big-Bang Nucleosynthesis
• Properties of heavy quarkonia and B_c mesons in the relativistic quark model
• 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
• Mass spectrum of orbitally and radially excited heavy-light mesons in the relativistic quark model
• Masses of heavy baryons in the relativistic quark model
• Form Factors and Strong Couplings of Heavy Baryons from QCD Light-Cone Sum Rules
• Measurements of absolute hadronic branching fractions of ${\Lambda }_c^{+}$ baryon
• ${\Lambda }_b\to \Lambda {\ell }^{+}{\ell }^{-}$ form factors, differential branching fraction, and angular observables from lattice QCD with relativistic $b$ quarks
• Test Flavor SU(3) symmetry in Exclusive ${\Lambda }_c$ decays
• The semileptonic decay Lambda_b -> Lambda_c + tau(-) + antinu_tau in the covariant confined quark model
• Form Factors for Lambda_b -> Lambda Transitions in SCET
• Perturbative Corrections to ${\Lambda }_b\to \Lambda$ Form Factors from QCD Light-Cone Sum Rules
• Semileptonic Decays of Heavy Lambda Baryons in a Quark Model
• Measurement of the Branching Fraction Br(Lambda_c+ -> p K- pi+)
• Measurement of the absolute branching fraction for ${\Lambda }_c^{+}\to \Lambda e^{+}{\nu }_e$
• Strange baryon spectroscopy in the relativistic quark model
• Semileptonic decays of ${\Lambda }_b$ baryons in the relativistic quark model
• Heavy-to-light baryonic form factors at large recoil
• Masses of light tetraquarks and scalar mesons in the relativistic quark model
• Heavy-to-light semileptonic decays of Lambda_b and Lambda_c baryons in the covariant confined quark model
• Semileptonic decays ${\Lambda }_c^{+}\to \Lambda {\ell }^{+}{\nu }_{\ell }(\ell =e,\mu )$ in the covariant quark model and comparison with the new absolute branching fraction measurements of Belle and BESIII
• Semileptonic ${\Lambda }_{b,c}$ to Nucleon Transitions in Full QCD at Light Cone
• Improved analysis on the semi-leptonic decay ${\Lambda }_c\to \Lambda {\ell }^{+}\nu$ from QCD light-cone sum rules
• Prospects for improved ${\Lambda }_c$ branching fractions
• Measurement of B(/\c->pKpi)

Cited by in corpus (33)

• STCF Conceptual Design Report: Volume 1 -- Physics & Detector
• Charmed Baryon Physics Circa 2021
• Weak Decays of Heavy Baryons in Light-Front Approach
• Singly Cabibbo-suppressed hadronic decays of ${\Lambda }_c^{+}$
• ${\Lambda }_c\to \Lambda {\ell }^{+}{\nu }_{\ell }$ form factors and decay rates from lattice QCD with physical quark masses
• ${\Lambda }_c\to N$ form factors from lattice QCD and phenomenology of ${\Lambda }_c\to n{\ell }^{+}{\nu }_{\ell }$ and ${\Lambda }_c\to p{\mu }^{+}{\mu }^{-}$ decays
• Semileptonic decays of anti-triplet charmed baryons
• Rare radiative charm decays within the standard model and beyond
• Revisiting semileptonic decays of ${\Lambda }_{b(c)}$ supported by baryon spectroscopy
• Probing new physics in semileptonic ${\Lambda }_b$ decays
• Sum rules for $CP$ asymmetries of charmed baryon decays in the $SU(3{)}_F$ limit
• Charmed baryon decays in $SU(3{)}_F$ symmetry
• Study of the Semileptonic Decay ${\Lambda }_c^{+}\to \Lambda e^{+}{\nu }_e$
• Rare ${\Lambda }_b\to \Lambda l^{+}{l}^{-}$ and ${\Lambda }_b\to \Lambda \gamma$ decays in the relativistic quark model
• Topological tensor invariants and the current algebra approach: Analysis of 196 nonleptonic two-body decays of single and double charm baryons -- a review
• Semileptonic weak decays of anti-triplet charmed baryons in the light-front formalism
• Semileptonic ${\Xi }_c$ baryon decays in the relativistic quark model
• ${\Lambda }_c$ semileptonic decays
• Semileptonic decays of ${\Lambda }_c^{+}$ in dynamical approaches
• Weak production of strange and charm ground-state baryons in nuclei
• Analysis of the semileptonic decay Λ_c->ne^+ν_e
• Angular Distributions for Multi-body Semileptonic Charmed Baryon Decays
• Rare ${\Lambda }_c\to p{\ell }^{+}{\ell }^{-}$ decay in the relativistic quark model
• Observation of a rare beta decay of the charmed baryon with a Graph Neural Network
• Rare ${\Lambda }_b\to n{l}^{+}{l}^{-}$ decays in the relativistic quark-diquark picture
• Anatomy of ${\Lambda }_c^{+}$ semileptonic decays
• Decays of Pentaquarks in Hadrocharmonium and Molecular Pictures
• Charm Physics at the Super $\tau$-Charm Factory
• Improved measurement of the absolute branching fraction of inclusive semileptonic ${\Lambda }_c^{+}$ decay
• Static properties and Semileptonic transitions of lowest-lying double heavy baryons
• Prospects for discovering new physics in charm sector through low-energy scattering processes $e^{-}p\to e^{-}({\mu }^{-}){\Lambda }_c$
• Baryons and baryoniums in the perspective of QCD sum rules
• SU(3) symmetry and its breaking effects in semileptonic heavy baryon decays