Isospin Symmetry Breaking within the HLS Model: A Full (rho, omega, phi) Mixing Scheme

Technical Report · Mon Jul 16 04:00:00 EDT 2001

DOI:https://doi.org/10.2172/784974· OSTI ID:784974

O'Connell, Heath B ^[1]

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1. SLAC

We study the way isospin symmetry violation can be generated within the Hidden Local Symmetry (HLS) Model. We show that isospin symmetry breaking effects on pseudoscalar mesons naturally induces correspondingly effects within the physics of vector mesons, through kaon loops. In this way, one recovers all features traditionally expected from {rho}-{omega} mixing and one finds support for the Orsay phase modeling of the e{sup +}e{sup -} {yields} {pi}{sup +}{pi}{sup -} amplitude. We then examine an effective procedure which generates mixing in the whole {rho}, {omega}, {phi} sector of the HLS Model. The corresponding model allows us to account for all two body decays of light mesons accessible to the HLS model in modulus and phase, leaving aside the {rho} {yields} {pi}{pi} and K* {yields} K{pi} modes only, which raise a specific problem. Comparison with experimental data is performed and covers modulus and phase information; this represents 26 physics quantities successfully described with very good fit quality within a constrained model which accounts for SU(3) breaking, nonet symmetry breaking in the pseudoscalar sector and, now, isospin symmetry breaking.

• Research Organization: Stanford Linear Accelerator Center, Menlo Park, CA (US)
• Sponsoring Organization: USDOE Office of Energy Research (ER) (US)
• DOE Contract Number: AC03-76SF00515
• OSTI ID: 784974
• Report Number(s): SLAC-PUB-8827
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ISOSPIN
KAONS
MESONS
PSEUDOSCALAR MESONS
PSEUDOSCALARS
SYMMETRY
SYMMETRY BREAKING
VECTOR MESONS