Two-photon partial widths of tensor mesons
نویسنده
چکیده
We calculate partial widths of the γγ decay of the tensor qq̄ states a2(1320), f2(1270), f2(1525), their radial excitations a2(1660), f2(1640), f2(1800) as well as F2qq̄ states. Calculations are performed in the framework of the same approach which was used before for the study of radiative decays f0(980) → γγ, a0(980) → γγ and φ(1020) → γf0(980): the assumption made is that of qq̄ structure of f0(980) and a0(980) [A.V. Anisovich et al., Phys. Lett. B 456, 80 (1999); Eur. Phys. J. A 12, 103 (2001)]. The description of the decay partial widths for a2(1320), f2(1270), f2(1525) and f0(980), a0(980) is reached with the approximately equal radial wave functions, thus giving a strong argument in favour of the fact that these scalar and tensor mesons are to be classified as members of the same P -wave qq̄ multiplet.
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