Rare ${\Lambda }_c\to p{\ell }^{+}{\ell }^{-}$ decay in the relativistic quark model

Abstract

The relativistic quark model based on the quasipotential approach with the QCD-motivate potential is employed for the calculation of the form factors of the ${\Lambda }_c\to p$ rare weak transitions. Their momentum dependence is explicitly determined without additional assumptions and extrapolations in the whole kinematical range of the momentum transfer squared $q^2$. The differential ${\Lambda }_c\to p{l}^{+}{l}^{-}$ decay branching fractions and angular distributions are calculated on the basis of these form factors. Both the perturbative and effective Wilson coefficients, which include contributions of vector meson resonances, are used. The calculated branching fraction of the ${\Lambda }_c\to p{\mu }^{+}{\mu }^{-}$ rare decay is well consistent with the experimental upper limit very recently set by the LHCb Collaboration.

12 pages, 4 figures, Published version. arXiv admin note: text overlap with arXiv:1610.00957

References in corpus (11)

• 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
• ${\Lambda }_c\to N$ 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 ${\Lambda }_b$ baryons in the relativistic quark model
• Heavy-to-light semileptonic decays of Lambda_b and Lambda_c baryons in the covariant confined quark model
• Semileptonic decays of ${\Lambda }_c$ baryons in the relativistic quark model
• Search for the rare decay ${\Lambda }_c^{+}\to p{\mu }^{+}{\mu }^{-}$
• Two loop virtual corrections to $b\to (d,s){\ell }^{+}{\ell }^{-}$ and $c\to u{\ell }^{+}{\ell }^{-}$ for arbitrary momentum transfer
• Rare ${\Lambda }_b\to n{l}^{+}{l}^{-}$ decays in the relativistic quark-diquark picture

Cited by in corpus (11)

• Sum rules for $CP$ asymmetries of charmed baryon decays in the $SU(3{)}_F$ limit
• Charmed baryon decays in $SU(3{)}_F$ symmetry
• Final-state rescattering mechanism of charmed baryon decays
• Studying ${\mathcal{B}}_1({\frac{1}{2}}^{+})\to {\mathcal{B}}_2({\frac{1}{2}}^{+}){\ell }^{+}{\ell }^{-}$ Semi-leptonic Weak Baryon Decays with the SU(3) Flavor Symmetry
• Seeking massless dark photons in the decays of charmed hadrons
• Pinning down $|\Delta c|=|\Delta u|=1$ couplings with rare charm baryon decays
• Rare radiative decays of charm baryons
• Rare ${\Lambda }_c$ decays and new physics effects
• Search for resonance-enhanced $CP$ and angular asymmetries in the ${\Lambda }_c^{+}\to p{\mu }^{+}{\mu }^{-}$ decay at LHCb
• Searching and identifying leptoquarks through low-energy polarized scattering processes $e^{-}p\to e^{-}{\Lambda }_c$
• Baryons and baryoniums in the perspective of QCD sum rules