G. Duplancić et al JHEP04(2008)014 doi:10.1088/1126-6708/2008/04/014
Light-cone sum rules for B → π form factors revisited
OPEN ACCESSG. Duplancić1,2, A. Khodjamirian3, Th. Mannel3, B. Melić4 and N. Offen5
Show affiliations
b-quark mass is employed, instead of the one-loop pole mass used in the previous analyses. The light-cone sum rule for f+Bπ(q2) is fitted to the measured q2-distribution in B → πlνl, fixing the input parameters with the largest uncertainty: the Gegenbauer moments of the pion distribution amplitude. For the B → π vector form factor at zero momentum transfer we predict f+Bπ(0) = 0.26+0.04−0.03. Combining it with the value of the product |Vubf+Bπ(0)| extracted from experiment, we obtain |Vub| = (3.5±0.4±0.2±0.1) × 10−3. In addition, the scalar and penguin B → π form factors f0Bπ(q2) and fTBπ(q2) are calculated.
- Keywords
- PACS
-
13.40.Gp Electromagnetic form factors
13.40.Ks Electromagnetic corrections to strong- and weak-interaction processes
13.20.He Decays of bottom mesons
- Subjects
- Dates
-
Issue 04 (April 2008)
Received 17 January 2008, accepted for publication 25 March 2008
Published 2 April 2008
-
Light-cone sum rules for B → π form factors revisited
G. Duplancić et al JHEP04(2008)014
-
Dynamics of binary mixtures in inhomogeneous temperatures
G Gonnella et al 2008 J. Phys. A: Math. Theor. 41 105001
-
CAD model for circuit parameters of superconducting-based hybrid planar transmission lines
Hamid Reza Mohebbi and A Hamed Majedi 2009 Supercond. Sci. Technol. 22 125028
-
Iodine K-edge EXAFS analysis of iodide ion-cyclodextrin inclusion complexes in aqueous solution
T Kaneko et al 2009 J. Phys.: Conf. Ser. 190 012062
-
Limitations of calculating field distributions and magnetic susceptibilities in MRI using a Fourier based method
Yu-Chung N Cheng et al 2009 Phys. Med. Biol. 54 1169
-
Block diagonalization of four-dimensional metrics
J D E Grant and J A Vickers 2009 Class. Quantum Grav. 26 235014
-
A nanoscale friction investigation during the manipulation of nanoparticles in controlled environments
Manuel Palacio and Bharat Bhushan 2008 Nanotechnology 19 315710
-
Algebraic generalization of quantum statistics
N I Stoilova and J Van der Jeugt 2008 J. Phys.: Conf. Ser. 128 012061
-
Numerical simulation of the thermal response of Al core/Ni shell nanometer-sized particles
F Delogu 2007 Nanotechnology 18 505702
-
X-ray Emission from Open Star Clusters with Spectrum-Röntgen-Gamma
K P Singh et al 1998 Phys. Scr. 1998 142
Users also read
What's this?- Color evolution of 2 → 3 processes
- Loop induced interference effects in Higgs boson plus two jet production at the LHC
- Black objects in the Einstein-Gauss-Bonnet theory with negative cosmological constant and the boundary counterterm method
Related review articles
What's this?- Light scalar mesons in photon–photon collisions
- Understanding the proton's spin structure
- Understanding the proton's spin structure