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Title: B to light meson form factors with end-point cutoff

Abstract

Decay form factors of B to light pseudoscalar (P) and vector (V) mesons are analyzed with the momentum cutoff near the end point. The cutoff is caused by possible Cherenkov gluon radiation when an energetic light parton from the weak vertex travels through the 'brown muck' of light degrees of freedom. The end-point singularities and the double countings are naturally absent. The soft-overlap contributions where the partonic momenta configuration is highly asymmetric are very suppressed in this framework. A simple calculation gives a plausible results for B{yields}P, V form factors.

Authors:
 [1]
  1. Korea Institute for Advanced Study, Seoul 130-722 (Korea, Republic of)
Publication Date:
OSTI Identifier:
21020278
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 75; Journal Issue: 7; Other Information: DOI: 10.1103/PhysRevD.75.074018; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ASYMMETRY; B MESONS; DEGREES OF FREEDOM; FORM FACTORS; GLUONS; PARTICLE DECAY; PSEUDOSCALAR MESONS; QUANTUM CHROMODYNAMICS; SINGULARITY; VECTOR MESONS

Citation Formats

Lee, Jong-Phil. B to light meson form factors with end-point cutoff. United States: N. p., 2007. Web. doi:10.1103/PHYSREVD.75.074018.
Lee, Jong-Phil. B to light meson form factors with end-point cutoff. United States. doi:10.1103/PHYSREVD.75.074018.
Lee, Jong-Phil. Sun . "B to light meson form factors with end-point cutoff". United States. doi:10.1103/PHYSREVD.75.074018.
@article{osti_21020278,
title = {B to light meson form factors with end-point cutoff},
author = {Lee, Jong-Phil},
abstractNote = {Decay form factors of B to light pseudoscalar (P) and vector (V) mesons are analyzed with the momentum cutoff near the end point. The cutoff is caused by possible Cherenkov gluon radiation when an energetic light parton from the weak vertex travels through the 'brown muck' of light degrees of freedom. The end-point singularities and the double countings are naturally absent. The soft-overlap contributions where the partonic momenta configuration is highly asymmetric are very suppressed in this framework. A simple calculation gives a plausible results for B{yields}P, V form factors.},
doi = {10.1103/PHYSREVD.75.074018},
journal = {Physical Review. D, Particles Fields},
number = 7,
volume = 75,
place = {United States},
year = {Sun Apr 01 00:00:00 EDT 2007},
month = {Sun Apr 01 00:00:00 EDT 2007}
}
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  • We report a comprehensive set of results for B-meson heavy-to-light transition form factors calculated using a truncation of, and expression for, the transition amplitudes in which all elements are motivated by the study of Dyson-Schwinger equations in QCD. In this relativistic approach, which realizes confinement and dynamical chiral symmetry breaking, all physical values of momentum transfer in the transition form factors are simultaneously accessible. Our results can be useful in the analysis and correlation of the large body of data being accumulated at extant facilities, and thereby in probing the standard model and beyond.
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