Glue content and mixing angle of the {eta}-{eta}{sup '} system: The effect of the isoscalar 0{sup -} continuum

Journal Article · Wed Dec 01 00:00:00 EST 2004 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.70.116001· OSTI ID:20698169

Nasrallah, N F ^[1]

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1. Faculty of Science, Lebanese University, Tripoli (Lebanon)

Masses and topological charges of the {eta} and {eta}{sup '} mesons are expressed in terms of the singlet-octet mixing angle {theta}. Contributions of the pseudoscalar 0{sup -} continuum are evaluated in a model independent way. Applications to the decay {eta}{yields}3{pi} and to the radiative decay of vector mesons involving {eta} and {eta}{sup '} are considered. Agreement with experiment is, in general, good and the results quite stable for -30.5 deg. < or approx. {theta} < or approx. -18.5 deg.

• OSTI ID: 20698169
• Journal Information: Physical Review. D, Particles Fields, Vol. 70, Issue 11; Other Information: DOI: 10.1103/PhysRevD.70.116001; (c) 2004 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ETA MESONS
ETA PRIME-958 MESONS
HADRONIC PARTICLE DECAY
ISOSPIN
PARITY
QUANTUM CHROMODYNAMICS
RADIATIVE DECAY
RESONANCE PARTICLES
REST MASS
SPIN
TOPOLOGY
VECTOR MESONS
WEINBERG ANGLE