Measurement of Inclusive Production of Neutral Pions from Upsilon(4S) Decays
classification
✦ hep-ex
keywords
neutralpionsupsilondecaysmeanbelledecaydetector
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Using the Belle detector operating at the KEKB e+e- storage ring, we have measured the mean multiplicity and the momentum spectrum of neutral pions from the decays of the Upsilon(4S) resonance. We measure a mean of 4.70 +/- 0.04 +/- 0.22 neutral pions per Upsilon(4S) decay.
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