Form factors from light-cone sum rules with B-meson distribution amplitudes

Journal Article · Thu Mar 01 00:00:00 EST 2007 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.75.054013· OSTI ID:21020060

Khodjamirian, Alexander; Mannel, Thomas; Offen, Nils ^[1]

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1. Theoretische Physik 1, Fachbereich Physik, Universitaet Siegen, D-57068 Siegen (Germany)

New sum rules for B{yields}{pi},K and B{yields}{rho},K* form factors are derived from the correlation functions expanded near the light cone in terms of B-meson distribution amplitudes. The contributions of quark-antiquark and quark-antiquark-gluon components in the B meson are taken into account. Models for the B-meson three-particle distribution amplitudes are suggested, based on QCD sum rules in heavy-quark effective theory. Employing the new light-cone sum rules, we calculate the form factors at small momentum transfers, including SU(3)-violation effects. The results agree with the predictions of the conventional light-cone sum rules.

• OSTI ID: 21020060
• Journal Information: Physical Review. D, Particles Fields, Vol. 75, Issue 5; Other Information: DOI: 10.1103/PhysRevD.75.054013; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
B MESONS
B QUARKS
C QUARKS
CORRELATION FUNCTIONS
DISTRIBUTION
FORM FACTORS
GLUONS
HADRONIC PARTICLE DECAY
K*-892 MESONS
KAONS
LIGHT CONE
MOMENTUM TRANSFER
PIONS
QUANTUM CHROMODYNAMICS
RHO-770 MESONS
SU-3 GROUPS
SUM RULES
T QUARKS