ISSN - 15507998, Physical Review D - Particles, Fields, Gravitation and Cosmology, 2001, vol. 64, p. -
Measurement of inclusive production of neutral pions from Υ(4S) decays
Using the Belle detector operating at the KEKB e +e - storage ring, we have measured the mean multiplicity and momentum spectrum of neutral pions from the decays of the Υ(4S) resonance. We measure a mean of 4.70±0.04±0.22 neutral pions per Υ(4S) decay. ©2001 The American Physical Society.