Light-cone Distribution Amplitudes of Xi and their Applications

Abstract

We present the light-cone distribution amplitudes of the Xi baryons up to twist six on the basis of QCD conformal partial wave expansion to the leading order conformal spin accuracy. The nonperturbative parameters relevant to the DAs are determined in the framework of the QCD sum rule. The light-cone QCD sum rule approach is used to investigate both the electromagnetic form factors of Xi and the exclusive semileptonic decay of Xi_c as applications. Our estimations on the magnetic moments are ${\mu }_{{\Xi }^0}=-(1.92\pm 0.34){\mu }_N$ and ${\mu }_{{\Xi }^{-}}=-(1.19\pm 0.03){\mu }_N$. The decay width of the process Xi_c->Xi e^+ν_e is evaluated to be $\Gamma =8.73\times 10^{-14}GeV$, which is in accordance with the experimental measurements and other theoretical approaches.

23 pages, 8 figures, version to appear in Phys. Rev. D

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• Octet baryon electromagnetic form factors in a relativistic quark model
• Model-independent calculation of $SU(3{)}_f$ violation in baryon octet light-cone distribution amplitudes
• Isovector axial-vector form factors of octet baryons in QCD
• Lightcone and quasi distribution amplitudes for light octet and decuplet baryons
• Light-cone QCD sum rule approach for the $\Xi$ baryon electromagnetic form factors and the semileptonic decay Xi_c->Xi e^+nu_e
• Analysis of the semileptonic decay Λ_c->ne^+ν_e
• The exclusive rare decay b->s gamma of heavy b-Baryons
• Gravitational form factors of hyperons in light-cone QCD
• Higher order light-cone distribution amplitudes of the Lambda baryon
• Electromagnetic form factors of octet baryons in QCD
• Semileptonic ${\Xi }_c$ baryon decays in the light cone QCD sum rules
• Tensor form factors of the octet hyperons in QCD
• Electromagnetic transitions among octet and decuplet baryons in QCD
• Higher Order Corrections to the Light-cone Distribution Amplitudes of the Sigma baryon
• Semileptonic Decay of ${\Omega }_c^0\to {\Xi }^{-}{l}^{+}{\nu }_l$ From Light-Cone Sum Rules
• Isovector Axial Vector Form Factors of Octet-Decuplet Hyperon Transition in QCD
• Octet negative parity to octet positive parity electromagnetic transitions in light cone QCD
• Semileptonic Decay of ${\Xi }_c\to \Xi {\ell }^{+}{\nu }_{\ell }$ From Light-Cone QCD Sum Rules
• Analysis of ${\gamma }^{\ast }\Lambda \to {\Sigma }^0$ transition in QCD
• Semileptonic neutral current decays of ${\Xi }_b$ with dileptons or dineutrinos in the final state
• Semileptonic decay of double strangeness heavy flavor baryons
• Radiative ${\Xi }_b^{-}\to {\Xi }^{-}\gamma$ decay
• Light-cone distribution amplitudes of the nucleon and $\Delta$ baryon
• Light-cone sum rules for radial excitation of decuplet to octet baryons electromagnetic transition form factors