1209.6199 (M. Ablikim et al.)

Determination of the number of $ψ^{\prime}$ event at BESIII    [PDF]

M. Ablikim, M. N. Achasov, D. J. Ambrose

The number of $\psp$ 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\times(1.00\pm 0.81%)\times 10^{6} $. The error is systematic only; the statistical error is negligible.

View original: http://arxiv.org/abs/1209.6199