Twophoton partial widths of tensor mesons
Abstract
We calculate partial widths of the gammagamma decay of the tensor q\bar q states a_2(1320), f_2(1270), f_2(1525), their radial excitations a_2(1660), f_2(1640), f_2(1800) as well as ^3F_2 q\bar q states. Calculations are performed in the framework of the same approach which was used before for the study of radiative decays f_0(980) > gammagamma, a_0(980) > gammagamma and phi(1020) > gammaf_0(980): the assumption made is that of q\bar q structure of f_0(980) and a_0(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 a_2(1320), f_2(1270), f_2(1525) and f_0(980), a_0(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 Pwave q\bar q multiplet.
 Publication:

Physics of Atomic Nuclei
 Pub Date:
 May 2003
 DOI:
 10.1134/1.1577914
 arXiv:
 arXiv:hepph/0204330
 Bibcode:
 2003PAN....66..914A
 Keywords:

 High Energy Physics  Phenomenology
 EPrint:
 37 pages, 7 figures, epsfig