Determination of the chiral-SU(4) x SU(4) -breaking parameters

Journal Article · Fri Jun 01 04:00:00 EDT 1979 · Phys. Rev., D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.19.3387· OSTI ID:5988120

Das, K P; Deshpande, N G

We consider broken chiral SU(4) x SU(4) symmetry. From the observed mass spectrum of pseudoscalar charmed mesons, we are able to solve for the symmetry-breaking parameters of the theory. We find that both vacuum and Hamiltonian breaking play an important role as far as charmed states are concerned. Purely from the masses of D and F mesons we deduce the current-algebra mass ratio m/sub c//m/sub s/ < 5. This differs greatly from values obtained using linear or quadratic mass formulas. Considering eta, eta', and eta/sub c/ mixing we further obtain a good solution with m/sub c//m/sub s/ approx. = 3.2 and / approx. = 5.67.

• Research Organization: Institute of Theoretical Science, University of Oregon, Eugene, Oregon 97403
• OSTI ID: 5988120
• Journal Information: Phys. Rev., D; (United States), Journal Name: Phys. Rev., D; (United States) Vol. 19:11; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645201* -- High Energy Physics-- Particle Interactions &amp; Properties-Theoretical-- General &amp; Scattering Theory
645400 -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
CHARM PARTICLES
CHARMED MESON RESONANCES
CHIRAL SYMMETRY
CURRENT ALGEBRA
ELEMENTARY PARTICLES
FIELD THEORIES
HADRONS
HAMILTONIANS
LIE GROUPS
MASS FORMULAE
MATHEMATICAL OPERATORS
MATRIX ELEMENTS
MESON RESONANCES
MESONS
POSTULATED PARTICLES
PSEUDOSCALAR MESONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUANTUM OPERATORS
QUARKS
RENORMALIZATION
RESONANCE PARTICLES
SU GROUPS
SU-4 GROUPS
SYMMETRY
SYMMETRY BREAKING
SYMMETRY GROUPS