Contributions of the [ital C]-odd axial-vector resonances to [eta][r arrow][pi][sup 0][gamma][gamma] and [gamma][gamma][r arrow][pi][sup 0][pi][sup 0]

Journal Article · Sat May 01 04:00:00 EDT 1993 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.47.3933· OSTI ID:6612486

Ko, P ^[1]

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1. School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455 (United States)

We consider the contributions of the [ital C]-odd axial-vector resonances ([ital b][sub 1],[ital h][sub 1]) to [eta][r arrow][pi][sup 0][gamma][gamma], as well as those of the usual [ital C]-odd vector resonances ([rho],[omega]) and chiral loops. Inclusion of [ital b][sub 1](1235), [ital h][sub 1](1170), [ital h][sub 1](1380) increases the decay width of [eta][r arrow][pi][sup 0][gamma][gamma], improving the theoretical prediction. The measurement of the [gamma][gamma] spectrum can test our model. We also discuss the effects of these [ital C]-odd axial-vector resonances on electromagnetic interactions of neutral pions: [gamma][gamma][r arrow][pi][sup 0][pi][sup 0] and electric and magnetic polarizabilities of [pi][sup 0].

• DOE Contract Number: AC02-83ER40105
• OSTI ID: 6612486
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 47:9; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

662390* -- Electromagnetic Processes & Properties-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BASIC INTERACTIONS
BOSONS
DECAY
ELECTRICAL PROPERTIES
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
ETA MESONS
HADRONS
INTERACTIONS
MESONS
PARTICLE DECAY
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
PARTICLE WIDTHS
PHOTON-PHOTON INTERACTIONS
PHYSICAL PROPERTIES
PIONS
PIONS NEUTRAL
POLARIZABILITY
PSEUDOSCALAR MESONS
RADIATIVE DECAY