We report on measurements of the total cross section for e+e-→γγ for center-of-mass energies between 57.4 and 59.5 GeV, using the AMY detector at the TRISTAN collider. We set new limits on the production of a possible new s-channel resonance decaying into photon pairs.
Bibliographical noteFunding Information:
eration of the storage ring. In addition we acknowledge the strong support provided by the staffs of our home institutions. We are particularly indebted to professor Lay Nam Chang for fruitful discussions on the theoretical aspects of this paper. This work has been supported by the Japan Ministry of Education, Science and Culture (Monbusho), the Japan Society for the Promotion of Science, the US Department of Energy, the US National Science Foundation, the Korean Science and Engineering Foundation, the Ministry of Education of Korea and the Academia Sinica of the People's Republic of China.