ISSN - 16741137, Chinese Physics C, 2013, vol. 37, p. -
Determination of the number of ψ- Events at BESIII
The number of ψ' events accumulated by the BESIII experiment from March 3 through April 14, 2009, is determined by counting inclusive hadronic events. The result is 106.41×(1.00?±0.81%)×106 . The error is systematic dominant; the statistical error is negligible. © 2013 Chinese Physical Society.