Semileptonic Decay of ${\Xi }_c\to \Xi {\ell }^{+}{\nu }_{\ell }$ From Light-Cone QCD Sum Rules

Abstract

Semileptonic decay processes of ${\Xi }_c\to \Xi \ell {\nu }_{\ell }$ are studied by light-cone QCD sum rules in this paper. The six form factors of ${\Xi }_c\to \Xi$ semileptonic transition matrix elements are calculated by this method with the light-cone distribution amplitudes of $\Xi$ baryon up to twist six. With the six form factors, the absolute branching ratios of ${\Xi }_c^0\to {\Xi }^{-}{\ell }^{+}{\nu }_{\ell }$ and ${\Xi }_c^{+}\to {\Xi }^0{\ell }^{+}{\nu }_{\ell }$ are calculated by the helicity amplitudes formalism of semileptonic differential decay widths. The ratios of absolute branching ratios of electron and muon final states processes give the proof of lepton flavor universality. Our results are in accordance with the recent experimental and theoretical reports.

11 pages, 2 figures

References in corpus (14)

• ${\Lambda }_b\to p,\Lambda$ transition form factors from QCD light-cone sum rules
• Semileptonic decays of anti-triplet charmed baryons
• Distribution amplitudes of $\Sigma$ and $\Lambda$ and their electromagnetic form factors
• First Lattice QCD determination of semileptonic decays of charmed-strange baryons ${\Xi }_c$
• Measurements of the branching fractions of the semileptonic decays ${\Xi }_c^0\to {\Xi }^{-}{\ell }^{+}{\nu }_{\ell }$ and the asymmetry parameter of ${\Xi }_c^0\to {\Xi }^{-}{\pi }^{+}$
• Measurement of the cross sections of ${\Xi }_{\mathrm{c}}^0$ and ${\Xi }_{\mathrm{c}}^{+}$ baryons and branching-fraction ratio BR(${\Xi }_{\mathrm{c}}^0\to {\Xi }^{-}{\mathrm{e}}^{+}{\nu }_{\mathrm{e}}$)/BR(${\Xi }_{\mathrm{c}}^0\to {\Xi }^{-}{\pi }^{+}$) in pp collisions at 13 TeV
• Light-cone Distribution Amplitudes of Xi and their Applications
• Semileptonic weak decays of anti-triplet charmed baryons in the light-front formalism
• Light-cone QCD sum rule approach for the $\Xi$ baryon electromagnetic form factors and the semileptonic decay Xi_c->Xi e^+nu_e
• The weak decays of ${\Xi }_c^{{(}^{\prime })}\to \Xi$ in the light-front quark model
• Semileptonic ${\Xi }_c$ baryon decays in the light cone QCD sum rules
• W-exchange contribution to the decays ${\Xi }_{cc}^{++}\to {\Xi }_c^{+(\prime )}{\pi }^{+}$ using light-cone sum rules
• Hadronization studies at the LHC with ALICE
• SU(3) symmetry and its breaking effects in semileptonic heavy baryon decays

Cited by in corpus (2)

• Recent Progress in Leptonic and Semileptonic Decays of Charmed Hadrons
• Semileptonic decay of double strangeness heavy flavor baryons