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Hadrons and Nuclei

Eur. Phys. J. A 12, 103-115 (2001)

Radiative decays of basic scalar, vector and tensor mesons and the determination of the P-wave $q \bar q$ multiplet

A.V. Anisovich, V.V. Anisovich and V.A. Nikonov

Theory Division of Petersburg Nuclear Physics Institute, 188300 Gatchina, S. Petersburg district, Russia


(Received: 23 August 2001 / Revised version: 13 September 2001 Communicated by Th. Walcher)

We perform simultaneous calculations of the radiative decays of scalar mesons $f_0(980)\to \gamma\gamma$, $a_0(980)\to \gamma\gamma$, vector meson $\phi(1020)\to \gamma f_0(980)$, $\gamma a_0(980)$, $\gamma \pi^0$, $\gamma \eta$, $\gamma \eta'$ and tensor mesons $a_2(1320)\to \gamma\gamma$, $f_2(1270)\to \gamma\gamma$, $f_2(1525)\to \gamma\gamma$, assuming all these states to be dominantly the $q \bar q$ ones. A good description of the considered radiative decays is reached by using almost the same radial wave functions for scalar and tensor mesons that supports the idea for the f0(980), a0(980) and a2(1320), f2(1270), f2(1525) to belong to the same P-wave $q \bar q$ multiplet.

13.40.Hq - Electromagnetic decays.
12.38.-t - Quantum chromodynamics.
14.40.-n - Mesons.

© Società Italiana di Fisica, Springer-Verlag 2001