Second Order Power Corrections in the Heavy Quark Effective Theory II. Baryon Form Factors

Abstract

The analysis of $1/m_Q^2$ corrections of the previous paper is extended to the semileptonic decays of heavy baryons. We focus on the simplest case, the ground state ${\Lambda }_Q$ baryons, in which the light degrees of freedom are in a state of zero total angular momentum. The formalism, while identical in spirit, is considerably less cumbersome than for heavy mesons. The general results are applied to the semileptonic decay ${\Lambda }_b\to {\Lambda }_c\ell \nu$. An estimate of the leading power corrections to the decay rate at zero recoil, which are of order $1/m_Q^2$, is presented. It is pointed out that a measurement of certain asymmetry parameters would provide a direct measurement of $1/m_Q^2$ corrections. Finally, it is shown how the analysis could be extended to include excited heavy baryons such as the ${\Sigma }_Q$ and the ${\Sigma }_Q^{\ast }$.

(18 pages, REVTEX), SLAC-PUB-5898

References in corpus (1)

• Second Order Power Corrections in the Heavy Quark Effective Theory I. Formalism and Meson Form Factors

Cited by in corpus (76)

• On the B to D* tau nu Sensitivity to New Physics
• Dispersive Bounds on the Shape of B -> D^(*) l nu Form Factors
• Nonperturbative Contributions to the Inclusive Rare Decays $B\to X_s\gamma$ and $B\to X_s{\ell }^{+}{\ell }^{-}$
• Second Order Power Corrections in the Heavy Quark Effective Theory I. Formalism and Meson Form Factors
• QCD-Based Interpretation of the Lepton Spectrum in Inclusive $\bar{B}\to X_u\ell \bar{\nu }$ Decays
• Scalar contributions to $b\to c(u)\tau \nu$ transitions
• Leptonic and Semileptonic Decays of Charm and Bottom Hadrons
• Next--to--Leading Order Corrections to Meson Masses in the Heavy Quark Effective Theory
• Collinear effective theory at subleading order and its application to heavy-light currents
• Minimally flavored colored scalar in $\bar{B}\to D^{(\ast )}\tau \bar{\nu }$ and the mass matrices constraints
• Model-Independent Extraction of |V_{cb}| Using Dispersion Relations
• Semileptonic Decays of Heavy Lambda Baryons in a Quark Model
• Semileptonic decays of heavy baryons in the relativistic quark model
• Theoretical Update on the Model-Independent Determination of |V_{cb}| Using Heavy Quark Symmetry
• Semileptonic decays of ${\Lambda }_b$ baryons in the relativistic quark model
• Precise predictions for ${\Lambda }_b\to {\Lambda }_c$ semileptonic decays
• Ds0*(2317) and Ds1(2460) mesons in two-body B-meson decays
• Improved Bounds for the Slope and Curvature of $\bar{B}\to D^{(\ast )}\ell \bar{\nu }$ Form Factors
• New predictions for ${\Lambda }_b\to {\Lambda }_c$ semileptonic decays and tests of heavy quark symmetry
• Effective theory approach to new physics in $b\to u$ and $b\to c$ leptonic and semileptonic decays
• The Subleading Isgur-Wise Form Factor ${\xi }_3(v\cdot v^{\prime })$ and its Implications for the Decays $\bar{B}\to D^{(\ast )}\ell \bar{\nu }$
• First Lattice Study of Semileptonic Decays of Lambda_b and Xi_b Baryons
• Flavor Anomalies in Heavy Quark Decays
• Combined nonrelativistic constituent quark model and heavy quark effective theory study of semileptonic decays of Λ_b and Ξ_b baryons
• Semileptonic decays $B\to D^{(\ast )}l\nu$ in the perturbative QCD factorization approach
• Measurement of the shape of the ${\Lambda }_b^0\to {\Lambda }_c^{+}{\mu }^{-}\overline{\nu }$ differential decay rate
• Heavy Quark Effective Theory at Large Orders in $1/m$
• A Virial Theorem for the Kinetic Energy of a Heavy Quark inside Hadrons
• Measurement of |Vcb| using B0 to D*l nu decays
• Excited heavy baryon masses to order Lambda_{QCD}/m_Q from QCD sum rules
• Infinite Momentum Frame Calculation of Semileptonic Heavy Λ_b\toΛ_c Transitions Including HQET Improvements
• Comparison of 1/mQ^2 Corrections in Mesons and Baryons
• Constrained second-order power corrections in HQET: $R(D^{(\ast )})$, $|V_{cb}|$, and new physics
• Improved analysis for the baryon masses to order Lambda_{QCD}/m_Q from QCD sum rules
• Lifetimes of singly charmed hadrons
• Study of ${\bar{B}}_s^0\to (D_s^{+},D_s^{\ast +})l^{-}{\bar{\nu }}_l$ decays in the pQCD factorization approach
• Nonperturbative corrections to moments of the decay B -> X_s l^+ l^-
• Diquarks and the Semi-Leptonic Decay of ${\Lambda }_b$ in the Hybrid Scheme
• Improved Measurement of the Form Factors in the Decay Lambda_c^+ --> Lambda e^+ nu_e
• Exploring the Invisible Renormalon: Renormalization of the Heavy-Quark Kinetic Energy
• Measurement of $\sigma ({\Lambda }_b)/\sigma (B^0)\times BR({\Lambda }_b\to {\Lambda }_c{\pi }^{-})/BR(B^0\to D^{+}{\pi }^{-})$ in $p\bar{p}$ Collisions at $\sqrt{s}=1.96$ TeV
• Angular Distribution and Polarization of Photons in the Inclusive Decay ${\Lambda }_b\to X_s\gamma$
• Observation of the Decay Omega_C^0 --> Omega- e+ nu_e
• ${\Xi }_c-{\Xi }_c^{\prime }$ mixing From Lattice QCD
• Theoretical Review of B-physics
• Applications of the superflavor symmetry to heavy baryon-antibaryon pair production in electron-positron collision
• Form factors for the processes $B_c^{+}\to D^0{\ell }^{+}{\nu }_{\ell }$ and $B_c^{+}\to D_s^{+}{\ell }^{+}{\ell }^{-}(\nu \overline{\nu })$ from lattice QCD
• Updating the Unitarity Triangle: Top Quark Mass Versus Nonperturbative Uncertainties
• Interpreting LHCb's ${\Lambda }_b\to {\Lambda }_c\tau \bar{\nu }$ measurement and puzzles in semileptonic ${\Lambda }_b$ decays
• Electromagnetic radiation of baryons containing two heavy quarks
• Heavy baryon wave functions, Bakamjian-Thomas approach to form factors, and observables in ${\Lambda }_b\to {\Lambda }_c\left({\frac{1}{2}}^{\pm }\right)\ell \overline{\nu }$ transitions
• Bound on the curvature of the Isgur-Wise function of the baryon semileptonic decay Lambda_b -> Lambda_c + l + nu
• Exclusive-Inclusive Ratio of Semileptonic Lambda_b-Decays
• Quark-hadron duality at work: lifetimes of bottom baryons
• Linear and higher order power corrections in semileptonic B decays
• Revisiting lifetimes of doubly charmed baryons
• Single Pion Transitions of Charmed Baryons
• Form factors for Charmed Baryon Decays at order 1/m_c in the HQET limit
• Heavy quark symmetry of ${\Lambda }_b^0$ decays in quark models
• Subleading Corrections to Semileptonic Lambda_c Decays
• Polarized Λ_b \to X_c τνin the SM and THDM
• Long-Distance Contributions to the ${\Lambda }_b\to {\Lambda }_c{e}^{-}{\overline{\nu }}_e$ Isgur-Wise Function
• New results on the baryon decay Lambda_b -> Lambda_c ell nu in Heavy Quark Effective Theory
• Physics Results from RICH Detectors
• Renormalization of Velocity-Changing Dimension-Five Operators in the Heavy-Quark Effective Theory
• Theory of Inclusive B Decays
• Exclusive Decays of Beauty Hadrons
• A first study of the semi-leptonic decay of the ${\Lambda }_b$ baryon
• Semi-inclusive decays Lambda_b -> X_c + D_s^* at O(alpha_s) including Lambda_b and D_s^* polarization effects
• Semileptonic decay and form factors of ${\Omega }_b^{-}\to {\Omega }_c^{0}e\overline{{\nu }_e}$
• Bounds on Heavy-to-Heavy Baryonic Form Factors
• Heavy quark expansion of ${\Lambda }_b\to {\Lambda }^{\ast }(1520)$ form factors beyond leading order
• Determination of V_cb from exclusive decays in a relativistic quark model
• Semileptonic decay form factors of ${\Xi }_b^0\to {\Xi }_c^{+}\ell {\bar{\nu }}_{\ell }$ in HQET
• On the form factors of semileptonic baryon decays in Heavy Quark Effective Theory
• QCD factorization for ${\Lambda }_b^0\to {\Lambda }_c^{+}{\pi }^{-}$