In the SND experiment at the VEPP-2M electron-positron collider the PHI(1020)--->PI0+PI0+GAMMA decay was studied. The branching ratio B(PHI--->PI0+PI0+GAMMA)=(1.14+-0.10+-0.12)x10^{-4} was measured. It was shown, that the F0(980)GAMMA mechanism dominates in this decay and the 4-quark model of F0(980) describes our data most consistently.
@article{arxiv.hep-ex/9807016,
title = {First Observation of PHI(1020)--->PI0+PI0+GAMMA Decay},
author = {M. N. Achasov and V. M. Aulchenko and A. V. Berdyugin and A. V. Bozhenok and A. D. Bukin and D. A. Bukin and S. V. Burdin and T. V. Dimova and S. I. Dolinsky and V. P. Druzhinin and M. S. Dubrovin and I. A. Gaponenko and V. B. Golubev and V. N. Ivanchenko and I. A. Koop and A. A. Korol and S. V. Koshuba and E. V. Pakhtusova and E. A. Perevedentsev and A. A. Salnikov and S. I. Serednyakov and V. V. Shary and Yu. M. Shatunov and V. A. Sidorov and Z. K. Silagadze and A. N. Skrinsky and Yu. V. Usov and Yu. S. Velikzhanin},
journal= {arXiv preprint arXiv:hep-ex/9807016},
year = {2008}
}
Comments
6 pages, 6 figures, 1 table, Will be published in Phys.Lett.B