Corrections from low momentum physics to heavy quark symmetry relations for [ital B][r arrow][ital De][bar [nu]][sub [ital e]] and [ital B][r arrow][ital D][sup *][ital e][bar [nu]][sub [ital e]] decay

Journal Article · Wed Dec 01 04:00:00 EST 1993 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.48.5202· OSTI ID:5685393

Chow, C; Wise, M B ^[1]

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1. California Institute of Technology, Pasadena, California 91125 (United States)

Heavy quark symmetry relations for [ital B][r arrow][ital De][bar [nu]][sub [ital e]] and [ital B][r arrow][ital D][sup *][ital e][bar [nu]][sub [ital e]] form factors receive corrections suppressed by powers of the charm quark mass. For small up and down quark masses the leading corrections of order (1/[ital m][sub [ital c]])[sup [ital n]+2], [ital n]=0,1,2,..., have a nonanalytic dependence on the light quark masses of the form ln[ital m][sub [pi]][sup 2] for [ital n]=0 and (1/[ital m][sub [pi]])[sup [ital n]] for [ital n]=1,2, . . . . These corrections arise from very low momentum physics (i.e., well below the chiral-symmetry-breaking scale) and are computed using chiral perturbation theory. They are typically of the order of a few percent.

• DOE Contract Number: FG03-92ER40701
• OSTI ID: 5685393
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 48:11; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

662120 -- General Theory of Particles & Fields-- Symmetry
Conservation Laws
Currents & Their Properties-- (1992-)
662350* -- Decays of Mesons-- (1992-)
662420 -- Properties of Mesons & Meson Resonances-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
B MESONS
BEAUTY PARTICLES
BOSONS
CHARM PARTICLES
CHARMED MESONS
CHIRAL SYMMETRY
CORRECTIONS
D -2010 MESONS
D MESONS
DECAY
ELEMENTARY PARTICLES
FIELD THEORIES
FORM FACTORS
HADRONS
KOBAYASHI-MASKAWA MATRIX
MATRICES
MESONS
PARTICLE DECAY
PARTICLE PROPERTIES
PERTURBATION THEORY
PSEUDOSCALAR MESONS
SEMILEPTONIC DECAY
SYMMETRY
SYMMETRY BREAKING
UNIFIED-FIELD THEORIES
VECTOR MESONS
WEAK PARTICLE DECAY