Determination of the number of $\psi^{\prime}$ event at BESIII

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

arxiv: 1209.6199 · v2 · pith:HNVYAGCXnew · submitted 2012-09-27 · ✦ hep-ex

Determination of the number of psi^(prime) event at BESIII

M.Ablikim , M. N. Achasov , D.J. Ambrose This is my paper

classification ✦ hep-ex

keywords besiiierroreventsnumbertimesaccumulatedaprilcounting

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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.

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Determination of the number of psi^(prime) event at BESIII

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