Branching ratio and asymmetry for 0

C. James, K. Heller, P. Border, J. Dworkin, O. E. Overseth, R. Rameika, G. Valenti, R. Handler, B. Lundberg, L. Pondrom, M. Sheaff, C. Wilkinson, A. Beretvas, P. Cushman, T. Devlin, K. B. Luk, G. B. Thomson, R. Whitman

Research output: Contribution to journalArticlepeer-review

26 Scopus citations


We have measured the branching ratio (z0)(z00) to be [1.06±0. 12(stat)±0.11(syst)]×10-3. In 670 000 candidates we found 116+13 decays (background subtracted). These compare with 29 510 N 0 events reconstructed from the sample. Monte Carlo studies gave the relative acceptances for the two processes. The helicity of the yielded the product of asymmetry parameters =0.27±0.28, which implies ±(z)=0.43+0.44, where the uncertainty is all statistical.

Original languageEnglish (US)
Pages (from-to)843-846
Number of pages4
JournalPhysical Review Letters
Issue number8
StatePublished - Jan 1 1990


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