Book Synopsis Recent MARK III Results in Radiative J by :
Download or read book Recent MARK III Results in Radiative J written by and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: New results on the zeta(2.2) are reported. Mark III has analyzed new J/psi data and reconfirmed the zeta(2.2) in radiative J/psi decays to K/sub S/°K/sub S/° and KK−. The significances of the signals are 3.6 and 4.5 standard deviations, the masses, 2.232 +- 007 +- 007 and 2.230 +- 006 +- 014 GeV/c2, and the widths, 0.018/sub -.015//sup +.023/ +- 010 and 0.026/sub -.016//sup +.020/ +- 017 GeV/c2, for the K/sub S/°K/sub S/° and KK− modes, respectively. The branching ratios are BR(J/psi .-->. .gamma.zeta, zeta .-->. K/sub S/°K/sub S/°) = (3.2/sub -1.3//sub +1.6/ +- 0.7) x 10−5 and BR(J/psi .-->. .gamma.zeta, zeta .-->. K+K−) = (4.2/sub -1.4//sup +1.7/ +- 0.8) x 10−5. 14 refs., 9 figs.
