Perturbative QCD Correction to the $B\to \pi$ Transition Form Factor

Abstract

We report on the perturbative $O({\alpha }_s)$ correction to the light-cone QCD sum rule for the $B\to \pi$ transition form factor $f^{+}$. The correction to the product $f_B{f}^{+}$ in leading twist approximation is found to be about 30%, that is similar in magnitude to the corresponding $O({\alpha }_s)$ correction in the two-point sum rule for $f_B$. The resulting cancellation of large QCD corrections in $f^{+}$ eliminates one important uncertainty in the sum-rule prediction for this form factor.

14 pages, 4 figures, Latex, epsfig

Cited by in corpus (93)

• QCD factorization for exclusive, non-leptonic B meson decays: General arguments and the case of heavy-light final states
• QCD factorization for B->PP and B->PV decays
• New Results on B->pi, K, eta Decay Formfactors from Light-Cone Sum Rules
• Symmetry-breaking corrections to heavy-to-light B meson form factors at large recoil
• B_{d,s}->rho, omega, K*, phi Decay Form Factors from Light-Cone Sum Rules Revisited
• Experimental Tests of Factorization in Charmless Non-Leptonic Two-Body B Decays
• The Physics of the B Factories
• Exclusive Semileptonic and Rare B-Meson Decays in QCD
• Model-independent description of $B\to \pi l\nu$ decays and a determination of $|V_{ub}|$
• Higher-Twist Distribution Amplitudes of the K Meson in QCD
• The Zero-Bin and Mode Factorization in Quantum Field Theory
• Heavy-to-Light Form Factors in the Final Hadron Large Energy Limit of QCD
• Leading-power contributions to $B\to \pi ,\rho$ transition form factors
• Flavor Physics in the Quark Sector
• Factorization and Endpoint Singularities in Heavy-to-Light decays
• Form Factors from Light-Cone Sum Rules with B-Meson Distribution Amplitudes
• Light-cone sum rules for $B\to \pi$ form factors revisited
• $B\to \pi \ell {\nu }_l$ Width and $|V_{ub}|$ from QCD Light-Cone Sum Rules
• Predictions on $B\to \pi \bar{l}{\nu }_l$, $D\to \pi \bar{l}{\nu }_l$ and $D\to K\bar{l}{\nu }_l$ from QCD Light-Cone Sum Rules
• Form Factors and Strong Couplings of Heavy Baryons from QCD Light-Cone Sum Rules
• Perturbative Effects in the Form Factor γγ^*\to πand Extraction of the Pion Wave Function from CLEO Data
• Heavy --> Light semileptonic decays of pseudoscalar mesons from lattice QCD
• The Semileptonic Decays $B\to \pi l\nu$ and $D\to \pi l\nu$ from Lattice QCD
• Heavy-to-light B meson form factors at large recoil energy -- spectator-scattering corrections
• A Complete Basis for Power Suppressed Collinear-Ultrasoft Operators
• $B$-Meson Distribution Amplitude from the $B\to \pi$ Form Factor
• Heavy-to-light form factors on the light cone
• Polarizations in B -> VV decays
• Charm couplings and form factors in QCD sum rules
• QCD factorization for B -> PP
• Semileptonic charm decays $D\to \pi l{\nu }_{ł}$ and $D\to Kl{\nu }_l$ from QCD Light-Cone Sum Rules
• The systematic study of $B\to \pi$ form factors in pQCD approach and its reliability
• Perturbative QCD Correction to the Light-Cone Sum Rule for the $B^{\ast }B\pi$ and $D^{\ast }D\pi$ Couplings
• Study of the q^2-Dependence of B --> pi ell nu and B --> rho(omega)ell nu Decay and Extraction of |V_ub|
• B->eta(') Form Factors in QCD
• B, Bs -> K form factors: an update of light-cone sum rule results
• Two-loop Corrections to the B to pi Form Factor from QCD Sum Rules on the Light-Cone and |V(ub)|
• Challenges in Semileptonic B Decays
• $B\to \pi \pi$ Decay in QCD
• |V_ub| and Constraints on the Leading-Twist Pion Distribution Amplitude from B->pi l nu
• Light-cone sum rules in soft-collinear effective theory
• Measurement of $B\to \rho \ell \nu$ Decay and $|V_{ub}|$
• Improved approach to the heavy-to-light form factors in the light-cone QCD sum
• Effective theory approach to new physics in $b\to u$ and $b\to c$ leptonic and semileptonic decays
• Form factors of B, Bs -> eta, eta' and D, Ds -> eta, eta' transitions from QCD light-cone sum rules
• Extrapolation and unitarity bounds for the $B\to \pi$ form factor
• Flavour SU(3) Symmetry in Charmless B Decays
• Phenomenological Analysis of B->PP Decays with QCD Factorization
• Light Cone Sum Rules for gamma* N -> Delta Transition Form Factors
• Testing QCD Sum Rules on the Light-Cone in D->(pi,K) l nu Decays
• |V_ub| from UTangles and B->pi l nu
• Precision calculations of $B_{d,s}\to \pi ,K$ decay form factors in soft-collinear effective theory
• The Scalar $B\to \pi$ and $D\to \pi$ Form Factors in QCD
• Annihilation effects in $B\to \pi \pi$ from QCD Light-Cone Sum Rules
• Radiative Corrections on the $B\to P$ Form Factors with Chiral Current in the Light-Cone Sum Rules
• Models for Light-Cone Meson Distribution Amplitudes
• $B-\pi$ weak form factor with chiral current in the light-cone sum rules
• Form factors of exclusive $b\to u$ transitions
• The $D^{\ast }D\pi$ and $B^{\ast }B\pi$ couplings from light-cone sum rules
• SU_f(3)-Symmetry Breaking Effects of the B\to K Transition Form Factor in the QCD Light-Cone Sum Rules
• Strong Couplings of Heavy Mesons to A Light Vector Meson in QCD
• Two-parton twist-3 factorization in perturbative QCD
• Gluonic Penguins in $B\to \pi \pi$ from QCD Light-Cone Sum Rules
• Form factors $f_{+}^{B\to \pi }(0)$ and $f_{+}^{D\to \pi }(0)$ in $QCD$ and determination of $|V_{ub}|$ and $|V_{cd}|$
• Renormalization group equation improved analysis of $B\to \pi$ form factors from Light-Cone Sum Rules
• Nucleon Form Factors to Next-to-Leading Order with Light-Cone Sum Rules
• $B\to \rho$ transition form factors within the QCD light-cone sum rules and the $\rho$-meson leading-twist distribution amplitude
• Strong Coupling Constants of the Doubly Heavy ${\Xi }_{QQ}$ Baryons with $\pi$ Meson
• Direct CP Violation, Branching Ratios and Form Factors $B\to \pi$, $B\to K$ in $B$ Decays
• Higher-Twist Effects in Light-Cone Sum Rule for the $B\to \pi$ Form Factor
• Perturbative approach to the penguin-induced $B\to \pi \varphi$
• The $B_s\to K$ Form Factor in The Whole Kinematically Accessible Range
• $B-S$ transition form-factors with the light-cone QCD sum rules
• Systematic Study on QCD Interactions of Heavy Mesons with $\rho$ Meson
• Strong interaction of doubly heavy spin-3/2 baryons with light vector mesons
• QCD Sum Rules on the Light-Cone, Factorisation and SCET
• FCNC transition of $B$ to $a_1$ with LCSR
• Strong $D_s^{\ast }{D}_s{\eta }^{(\prime )}$ and $B_s^{\ast }{B}_s{\eta }^{(\prime )}$ vertices from QCD light-cone sum rules
• Semileptonic $B_s\to K_0^{\ast }(1430)$ transitions with the light-cone sum rules
• Ward Identities, B-> ρForm Factors and |V_ub|
• Light-Cone HQET Sum Rules for the B --> pi Transition with 1/m_Q Corrections
• Form factors for $B-->\pi l\nu$ decay in a model constrained by chiral symmetry and quark model
• Constraints on the Leading-Twist Pion Distribution Amplitude from A QCD Light-Cone Sum Rule with Chiral Current
• Sudakov suppression in the soft heavy to light meson transition form factor
• Strong Coupling Constants of the Doubly Heavy Spin-1/2 Baryons with Light Pseudoscalar Mesons
• Semileptonic $B_{(s)}\to a_1(K_1){\ell }^{+}{\ell }^{-}$ decays via the light-cone sum rules with $B$-meson distribution amplitudes
• An improved calculation of the $D_{(s)}^{\ast }{D}_{(s)}V$ and $B_{(s)}^{\ast }{B}_{(s)}V$ couplings from light-cone sum rules
• QCD sum rules on the light cone and B -> pi form factors
• Strong Vertices of Doubly Heavy Spin-3/2 Baryons with Light Pseudoscalar Mesons
• Light-cone sum rules for the heavy-to-light transition in the effective theory
• B-Meson Properties from Modified Sum Rule Analyses
• Obtaining |V(ub)| exclusively: a theoretical perspective
• Heavy Flavours at Colliders