Quenched chiral perturbation theory for heavy-light mesons

Journal Article · Wed Mar 01 04:00:00 EST 1995 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.51.2338· OSTI ID:6578369

Booth, M J ^[1]

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1. Institute for Fundamental Theory and Department of Physics, University of Florida, Gainesville, Florida 32611 (United States)

Quenched chiral perturbation theory is extended to include heavy-light mesons. Nonanalytic corrections to the decay constants, Isgur-Wise function, and masses and mixing of heavy mesons are then computed. The results are used to estimate the error due to quenching in lattice computations of these quantities. For reasonable choices of parameters, it is found that quenching has a strong effect on [ital f][sub [ital B][ital s]]/[ital f][sub [ital B]], reducing it by as much as 28%. The errors are essentially negligible for the Isgur-Wise function and the mixing parameter.

• DOE Contract Number: FG05-86ER40272
• OSTI ID: 6578369
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 51:5; ISSN 0556-2821; ISSN PRVDAQ
• Country of Publication: United States
• Language: English

Related Subjects

662230 -- Quantum Chromodynamics-- (1992-)
662240* -- Models for Strong Interactions-- (1992-)
662420 -- Properties of Mesons & Meson Resonances-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
CHIRAL SYMMETRY
CORRECTIONS
DECAY
ELEMENTARY PARTICLES
HADRONS
MASS
MESONS
MIXING
PERTURBATION THEORY
QUENCHING
SYMMETRY