Semileptonic decays of heavy baryons in the relativistic quark model

Abstract

Semileptonic decays of heavy baryons consisting of one heavy (Q=b,c) and two light (q=u,d,s) quarks are considered in the heavy-quark--light-diquark approximation. The relativistic quasipotential equation is used for obtaining masses and wave functions of both diquarks and baryons within the constituent quark model. The weak transition matrix elements are expressed through the overlap integrals of the baryon wave functions. The Isgur-Wise functions are determined in the whole accessible kinematic range. The exclusive semileptonic decay rates and different asymmetries are calculated with applying the heavy quark 1/m_Q expansion. The evaluated Lambda_b -> Lambda_c l nu decay rate agrees with its experimental value.

22 pages, 9 figures

Cited by in corpus (34)

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• Excited heavy tetraquarks with hidden charm
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• Semileptonic decays of ${\Lambda }_b$ baryons in the relativistic quark model
• Weak decays of $B_s$ mesons to $D_s$ mesons in the relativistic quark model
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• Masses of tetraquarks with open charm and bottom
• Revisiting semileptonic decays of ${\Lambda }_{b(c)}$ supported by baryon spectroscopy
• Light-cone Sum Rule Analysis of Semileptonic Decays ${\Lambda }_b^0\to {\Lambda }_c^{+}{\ell }^{-}{\overline{\nu }}_{\ell }$
• Semileptonic Transition of ${\Lambda }_b$ Baryon
• Test of the heavy quark-light diquark approximation for baryons with a heavy quark
• The weak decays of ${\Xi }_c^{{(}^{\prime })}\to \Xi$ in the light-front quark model
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• Restudy of the color-allowed two-body nonleptonic decay of bottom baryons ${\Xi }_b$ and ${\Omega }_b$ supported by hadron spectroscopy
• Charmonium decays of beauty baryons in the perturbative QCD approach
• Probing new physics in semileptonic ${\Sigma }_b$ and ${\Omega }_b$ decays
• Study on the weak decay between two heavy baryons ${\mathcal{B}}_i({\frac{1}{2}}^{+})\to {\mathcal{B}}_f({\frac{3}{2}}^{+})$ in the light-front quark model
• Investigating the transition form factors of ${\Lambda }_b\to {\Lambda }_c(2625)$ and ${\Xi }_b\to {\Xi }_c(2815)$ and the corresponding weak decays with support from baryon spectroscopy
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• Tree Level Semileptonic ${\Sigma }_b$ to Nucleon Decay in Light Cone QCD Sum Rules
• Heavy quark symmetry of ${\Lambda }_b^0$ decays in quark models
• Static properties and Semileptonic transitions of lowest-lying double heavy baryons
• b-baryon semi-tauonic decays in the Standard Model
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• Semileptonic baryon decays ${\Xi }_b\to {\Xi }_c{\ell }^{-}{\bar{\nu }}_{\ell }$ in perturbative QCD
• The study of weak decays induced by ${\frac{1}{2}}^{+}\to {\frac{3}{2}}^{-}$ transition in light-cone sum rules
• Electromagnetic and weak decay of singly Heavy Baryons (Qqq)
• Relics of Supersymmetry in Ordinary 1-flavor QCD: Hairpin Diagrams and Scalar-Pseudoscalar Degeneracy
• Analysis of the semileptonic decays of ${\Xi }_{cc}$ and ${\Omega }_{cc}$ baryons in QCD sum rules
• Semileptonic decay and form factors of ${\Omega }_b^{-}\to {\Omega }_c^{0}e\overline{{\nu }_e}$
• Semileptonic decay form factors of ${\Xi }_b^0\to {\Xi }_c^{+}\ell {\bar{\nu }}_{\ell }$ in HQET