Investigation of the $e^+e^- \to ÏÏ^0 \to Ï^0 Ï^0 Î³$ reaction in the energy domain near the $Ï$-meson

M. N. Achasov; V. M. Aulchenko; A. V. Berdyugin; A. V. Bozhenok; D. A. Bukin; S. V. Burdin; T. V. Dimova; V. P. Druzhinin; M. S. Dubrovin; I. A. Gaponenko; V. B. Golubev; V. N. Ivanchenko; I. A. Koop; A. A. Korol; S. V. Koshuba; E. V. Pakhtusova; A. A. Salnikov; V. V. Shary; S. I. Serednyakov; Yu. M. Shatunov; V. A. Sidorov; Z. K. Silagadze; A. A. Valishev

doi:10.1016/S0550-3213(99)00482-4

paper

Investigation of the $e^{+} e^{-} \to I ¨ I ¨ ^{0} \to I ¨ ^{0} I ¨ ^{0} I^^{3}$ reaction in the energy domain near the $I ¨ $ -meson

arXiv:hep-ex/9907026 · doi:10.1016/S0550-3213(99)00482-4

Abstract

The $e^{+} e^{-} \to I ¨ I ¨ ^{0} \to I ¨ ^{0} I ¨ ^{0} I^^{3}$ process was investigated in the SND experiment at the VEPP-2M collider. A narrow energy interval near the $I ¨ $ -meson was scanned. The observed cross-section reveals, at the level of three standard deviation, the interference effect caused by $I ¨ \to I ¨ ^{0} I ¨ ^{0} I^^{3}$ decay. The cross-section parameters, as well as the real and imaginary parts of the $I ¨ $ -meson related amplitude, were measured.

34 pages, 7 figures, LaTeX, uses FEYNMAN package. Erroneously reported C_{12} coefficient corrected (an error discovered in hep-ph/0603241). in the published version Nucl. Phys. B569(2000), 158 this coefficient is reported incorrectly

Investigation of the e+e−→I¨I¨0→I¨0I¨0I^3 reaction in the energy domain near the I¨-meson

Abstract

Investigation of the $e^{+} e^{-} \to I ¨ I ¨ ^{0} \to I ¨ ^{0} I ¨ ^{0} I^^{3}$ reaction in the energy domain near the $I ¨ $ -meson