Tests of isospin symmetry breaking at [phi](1020) meson factories

Journal Article · Thu Sep 01 00:00:00 EDT 1994 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.50.3263· OSTI ID:7253127

Genz, H ^[1]; Tatur, S ^[2]

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1. Institut fuer Theoretische Teilchenphysik, Universitaet Karlsruhe, D-7612, Karlsruhe (Germany)
2. N. Copernicus Astronomical Center, Polish Academy of Sciences, Bartycka 18, 00-716 Warsaw (Poland)

In a model of isospin symmetry breaking we obtain the ([ital e][sup [minus]][ital e][sup +][r arrow][pi][sup [minus]][pi][sup +]) amplitude [ital Q] and the isospin [ital I]=0 and [ital I]=1 relative phase [psi] at the [phi](1020) resonance in approximate agreement with experiment. The model predicts [Gamma]([phi][r arrow][omega][pi][sup 0])[approx]4[times]10[sup [minus]4] MeV. We have also obtained [Gamma]([phi][r arrow][eta][prime][gamma])=5.2[times]10[sup [minus]4] MeV. Measuring this partial width would strongly constrain [eta]-[eta][prime] mixing. The branching ratios B of the isospin violating decays [rho][sup +][r arrow][pi][sup +][eta] and [eta][prime][r arrow][rho][sup [plus minus]][pi][sup [minus plus]] are predicted to be B([rho][sup +][r arrow][pi][sup +][eta])=3[times]10[sup [minus]5] and B([eta][prime][r arrow][rho][sup [plus minus]][pi][sup [minus plus]])=4[times]10[sup [minus]3], respectively, leading to B[[phi][r arrow][rho][sup [plus minus]][pi][sup [minus plus]][r arrow]([pi][sup [plus minus]][eta])[pi][sup [minus plus]][r arrow]([pi][sup [plus minus]][gamma][gamma]) [pi][sup [minus plus]]]=10[sup [minus]6] and B[[phi][r arrow][eta][prime][gamma][r arrow]([rho][sup [plus minus]][pi][sup [minus plus]])[gamma]]=2[times]10[sup [minus]6].

• OSTI ID: 7253127
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 50:5; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

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662350* -- Decays of Mesons-- (1992-)
662420 -- Properties of Mesons & Meson Resonances-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATORS
BOSONS
BRANCHING RATIO
DIMENSIONS
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
ETA MESONS
ETA PRIME-958 MESONS
HADRONS
INTERACTIONS
ISOSPIN
LEPTON-LEPTON INTERACTIONS
MESON FACTORIES
MESONS
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
PHI-1020 MESONS
PSEUDOSCALAR MESONS
QUARKONIUM
RHO-770 MESONS
STRANGEONIUM
SYMMETRY BREAKING
TESTING
VECTOR MESONS
WIDTH