Pseudoscalar meson transition form factors

• Published in: Progress in particle and nuclear physics Vol. 67; no. 2; pp. 418 - 423
• Main Authors: Dubnicka, S., Dubnickova, A.Z., Liptaj, A.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01-04-2012
• Subjects: Analyticity; Muon [formula omitted] anomaly; Pseudoscalar mesons; Transition form factor; Transition form factor; Muon g−2 anomaly; Analyticity; Pseudoscalar mesons
• ISSN: 0146-6410; 1873-2224
• DOI: 10.1016/j.ppnp.2012.01.003

The existing data on pseudoscalar meson transition form factors are described by the sophisticated Unitary & Analytic model and are well elaborated for pseudoscalar mesons and 1/2+ octet baryons. Knowing the transition form factors, σtot(e+e−→Pγ) are specified and the contributions of e+e−→Pγ processes to the muon g−2 anomaly are evaluated with remarkably suppressed errors. Also the two-gamma decay widths of the π0, η and η′ pseudoscalar mesons are determined by an alternative method and compared with values given by the newest Review of Particle Physics.