Resolving ambiguity in CP -violation parameters

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

DOI:https://doi.org/10.1103/PhysRevD.45.946· OSTI ID:7206016

Harris, G R; Rosner, J L ^[1]

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1. Enrico Fermi Institute and Department of Physics, University of Chicago, Chicago, Illinois 60637 (United States)

Using present data on charmless {ital B}-meson decays, {ital B}-{ital {bar B}} mixing, and {ital CP}-violating {ital K}-{ital {bar K}} mixing, and the constraint {ital m}{sub {ital t}}=140{plus minus}40 GeV/{ital c}{sup 2} derived from a fit to electroweak data, we extract a value of {ital f}{sub {ital B}} (the {ital B}-meson decay constant), and obtain corresponding regions of parameters for elements of the Cabibbo-Kobayashi-Maskawa matrix. Two solutions are found: one with {ital f}{sub {ital B}}{approx}{ital f}{sub {pi}} (similar to values obtained in potential models) and the other with {ital f}{sub {ital B}}{approx}1.7{ital f}{sub {pi}} (closer to the large values favored in recent lattice calculations). Prospects for resolving the ambiguity via measurements of the {ital B}{r arrow}{tau}{nu} and {ital K}{sup +}{r arrow}{pi}{sup +}{nu}{bar {nu}} branching ratios, {ital B}{sub {ital s}-}{ital {bar B}{ital s}} mixing, {ital CP} violation in {ital B}{r arrow}{ital J}/{psi}{ital K}{sub {ital S}} and {ital B}{r arrow}{pi}{pi}, and {epsilon}{prime}/{epsilon} in the kaon system are discussed.

• DOE Contract Number: FG02-90ER40560
• OSTI ID: 7206016
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 45:3; 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-)
662350* -- Decays of Mesons-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANTILEPTONS
ANTIMATTER
ANTINEUTRINOS
ANTIPARTICLES
B MESONS
BEAUTY PARTICLES
BOSONS
BRANCHING RATIO
CORRECTIONS
CP INVARIANCE
DECAY
ELEMENTARY PARTICLES
FERMIONS
HADRONIC PARTICLE DECAY
HADRONS
HEAVY LEPTONS
INVARIANCE PRINCIPLES
KAONS
LEPTONS
LIFETIME
MASSLESS PARTICLES
MATRIX ELEMENTS
MATTER
MESON SPECTROSCOPY
MESONS
MIXING RATIO
NEUTRINOS
PARTICLE DECAY
PIONS
PIONS PLUS
POSTULATED PARTICLES
PSEUDOSCALAR MESONS
QUARKS
RADIATIVE CORRECTIONS
SPECTROSCOPY
STRANGE MESONS
STRANGE PARTICLES
TAU PARTICLES
TOP PARTICLES