Pseudoscalar decay constants in the relativized quark model and measuring the CKM matrix elements

Journal Article · Tue May 01 00:00:00 EDT 1990 · Physical Review, D (Particles Fields); (USA)

DOI:https://doi.org/10.1103/PhysRevD.41.2856· OSTI ID:7039357

Capstick, S ^[1]; Godfrey, S ^[2]

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1. Department of Physics, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213-3890 (USA)
2. Guelph-Waterloo Program for Graduate Work in Physics, Department of Physics, University of Guelph, Guelph, Ontario, Canada N1G 2W1 (CA)

We have calculated the pseudoscalar decay constants using the relativized quark model. We find {ital f}{sub {ital D}}{congruent}240{plus minus}20 MeV, {ital f}{sub {ital D}{sub {ital s}}}{congruent}290{plus minus}20 MeV, {ital f}{sub {ital B}}{congruent}155{plus minus}15 MeV, {ital f}{sub {ital B}{sub {ital s}}}{congruent}210{plus minus}20 MeV, and {ital f}{sub {ital B}{sub {ital c}}}{congruent}410{plus minus}40 MeV where the errors'' are our estimates of the reliability of the results. We used these values to study the Cabibbo-Kobayashi-Maskawa matrix elements. In particular, we combined our theoretical estimate of {ital f}{sub {ital B}} with the ARGUS/CLEO result for {ital B}{sup 0}-{ital {bar B}} {sup 0} mixing to study the relation between {vert bar}{ital V}{sub {ital t}{ital d}}{vert bar} and the {ital t}-quark mass. Recent measurements of {vert bar}{ital V}{sub {ital b}{ital c}}{vert bar} and {vert bar}{ital V}{sub {ital b}{ital u}}{vert bar} constrain {ital m}{sub {ital t}}{approx gt}70 GeV.

• DOE Contract Number: AC02-76ER03066
• OSTI ID: 7039357
• Journal Information: Physical Review, D (Particles Fields); (USA), Journal Name: Physical Review, D (Particles Fields); (USA) Journal Issue: 9 Vol. 41:9; ISSN PRVDA; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

645203* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Weak Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
B MESONS
B NEUTRAL MESONS
BOSONS
COMPOSITE MODELS
DECAY
ELEMENTARY PARTICLES
FIELD THEORIES
FLAVOR MODEL
FUNCTIONS
GENERAL RELATIVITY THEORY
HADRONS
INTERACTIONS
KOBAYASHI-MASKAWA MATRIX
MASS
MATHEMATICAL MODELS
MATRICES
MATRIX ELEMENTS
MESONS
PARTICLE INTERACTIONS
PARTICLE MODELS
POSTULATED PARTICLES
PSEUDOSCALAR MESONS
QUARK MODEL
QUARK-ANTIQUARK INTERACTIONS
RELATIVITY THEORY
TOP PARTICLES
TRUTH MODEL
UNIFIED-FIELD THEORIES
WAVE FUNCTIONS