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

Journal Article · Sun Nov 01 00:00:00 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), Vol. 46:9; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
MESONS
CHIRAL SYMMETRY
CP INVARIANCE
FORM FACTORS
GOLDSTONE BOSONS
MASS
PERTURBATION THEORY
QUANTUM CHROMODYNAMICS
QUARKS
SU-3 GROUPS
SYMMETRY BREAKING
ULTRAVIOLET DIVERGENCES
BOSONS
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
HADRONS
INVARIANCE PRINCIPLES
LIE GROUPS
PARTICLE PROPERTIES
POSTULATED PARTICLES
QUANTUM FIELD THEORY
SU GROUPS
SYMMETRY
SYMMETRY GROUPS
662120* - General Theory of Particles & Fields- Symmetry
Conservation Laws
Currents & Their Properties- (1992-)
662230 - Quantum Chromodynamics- (1992-)