J /. psi. decays and pseudoscalar-meson mixing

Journal Article · Mon Jul 01 04:00:00 EDT 1991 · Physical Review, D (Particles Fields); (USA)

DOI:https://doi.org/10.1103/PhysRevD.44.175· OSTI ID:5655037

Morisita, N; Kitamura, I; Teshima, T ^[1]

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1. Natural Sciences-Physics, College of Engineering, Chubu University, Kasugai, Aichi 487, Japan (JP)

We have examined the branching ratios of the decays {ital J}/{psi}{r arrow}{ital VP} and {ital J}/{psi}{r arrow}{ital P}{gamma} in order to determine the magnitudes of components other than {ital N}=({ital u{bar u}}+{ital d{bar d}})/ {radical}2 and {ital S}={ital s{bar s}} in {eta} and {eta}{prime}, using the data of the world average in 1990. Although the possibility that these magnitudes are very small is not excluded, there is a solution in which these magnitudes are not small, suggesting that {eta} and {eta}{prime} have glueball origins. Then, one state of two or more states in the {eta} (1440) region is considered to be a glueball. The mixing angle {theta}{sub 1} corresponding to the mixing angle {theta}{sub {ital P}} between {eta} and {eta}{prime} is estimated to be about {minus}20{degree}. The estimated {ital N} component in this glueball is larger than {ital S}. Using the mixing angles obtained, we have calculated the decay widths for various {ital P}{r arrow}{gamma}{gamma}, {ital P}{r arrow}{ital V}{gamma}, and {ital V}{r arrow}{ital P}{gamma} decays. The results are, in general, consistent with experiments.

• OSTI ID: 5655037
• Journal Information: Physical Review, D (Particles Fields); (USA), Journal Name: Physical Review, D (Particles Fields); (USA) Vol. 44:1; ISSN PRVDA; ISSN 0556-2821
• Country of Publication: United States
• Language: English

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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
BRANCHING RATIO
CHARMONIUM
DECAY
ELEMENTARY PARTICLES
ETA PRIME-958 MESONS
ETA-1440 MESONS
FERMIONS
FIELD THEORIES
FUNCTIONS
GLUEBALLS
HADRONS
J PSI-3097 MESONS
LAGRANGIAN FUNCTION
LIE GROUPS
MAGNETIC MOMENTS
MASS FORMULAE
MASSLESS PARTICLES
MESONS
MIXING RATIO
PARTICLE DECAY
PARTICLE PRODUCTION
PHOTONS
POSTULATED PARTICLES
PSEUDOSCALAR MESONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARKONIUM
QUARKS
RADIATIVE DECAY
SU GROUPS
SU-3 GROUPS
SYMMETRY BREAKING
SYMMETRY GROUPS
VECTOR MESONS