Chiral perturbation theory for SU(3) breaking in heavy-meson systems

Journal Article · Sun Nov 01 04:00:00 EST 1992 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.46.3929· OSTI ID:6972738

Goity, J L ^[1]

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1. Continuous Electron Beam Accelerator Facility, Newport News, Virginia 23606 (United States)

The SU(3)-breaking effects due to light-quark masses on heavy-meson masses, decay constants ({ital F}{sub {ital D}},{ital F}{sub {ital D}{ital s}}), and the form factor for semileptonic {ital {bar B}}{r arrow}{ital D}{sup (*)}{ital l}{bar {nu}}{sub {ital l}} transitions are formulated in chiral perturbation theory, using a heavy-meson effective Lagrangian and expanding in inverse powers of the heavy-meson mass. To leading order in this expansion, the leading chiral logarithms and the required counterterms are determined. At this level, a nonanalytic correction to the mass splittings of {ital O}({ital p}{sup 3}) appears, similar to the one found in light baryons. The correction to {ital F}{sub {ital D}{ital s}}/{ital F}{sub {ital D}} is roughly estimated to be of the order of 10% and, therefore, experimentally accessible, while the correction to the form factor is likely to be substantially smaller. We explicitly check that the heavy-quark symmetry is preserved by the chiral loops.

• OSTI ID: 6972738
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 46:9; ISSN PRVDA; 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-)
662230 -- Quantum Chromodynamics-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
CHIRAL SYMMETRY
CP INVARIANCE
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
FORM FACTORS
GOLDSTONE BOSONS
HADRONS
INVARIANCE PRINCIPLES
LIE GROUPS
MASS
MESONS
PARTICLE PROPERTIES
PERTURBATION THEORY
POSTULATED PARTICLES
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARKS
SU GROUPS
SU-3 GROUPS
SYMMETRY
SYMMETRY BREAKING
SYMMETRY GROUPS
ULTRAVIOLET DIVERGENCES