Measurement Of Pi-0 And Eta-Meson Production In E+E- Annihilation At Square-Root-S Near 10 Gev

Ch. Bieler,D. Antreasyan,H. W. Bartels,D. Besset,J. K. Bienlein,A. Bizzeti,E. D. Bloom,I. Brock,K. Brockmüller,R. Cabenda,A. Cartacci,M. Cavalli-Sforza,R. Clare,A. Compagnucci,G. Conforto,S. Cooper,R. Cowan,D. Coyne,A. Engler,K. Fairfield,G. Folger,A. Fridman,J. Gaiser,D. Gelphman,G. Glaser,G. Godfrey,K. Graaf,F. H. Heimlich,F. H. Heinsius,R. Hofstadter,J. Irion,Z. Jakubowski,H. Janssen,K. Karch,S. Keh,T. Kiel,H. Kilian,I. Kirkbride,T. Kloiber,M. Kobel,W. Koch,A. C. König,K. Königsmann,R. W. Kraemer,S. Krüger,G. Landi,R. Lee,S. Leffler,R. Lekebusch,A. M. Litke,W. Lockman,S. Lowe,B. Lurz,D. Marlow,H. Marsiske,W. Maschmann,P. McBride,F. Messing,W. J. Metzger,H. Meyer,B. Monteleoni,B. Muryn,R. Nernst,B. Niczyporuk,G. Nowak,C. Peck,P. G. Pelfer,B. Pollock,F. C. Porter,D. Prindle,P. Ratoff,M. Reidenbach,B. Renger,C. Rippich,M. Scheer,P. Schmitt,J. Schotanus,J. Schütte,A. Schwarz,D. Sievers,T. Skwarnicki,V. Stock,K. Strauch,U. Strohbusch,J. Tompkins,H. I. Trost,B. van Uitert,R. T. Van de Walle,H. Vogel,A. Voigt,U. Volland,K. Wachs,K. Wacker,W. Walk,H. Wegener,D. A. Williams,P. Zschorsch

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS（1991）

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Abstract

We present a study of inclusive pi-0 and eta-production in e+ e- annihilation at square-root s almost-equal-to 10 GeV. Our analysis is based on integrated luminosities of 46.2 pb-1 taken at the gamma(1 S) resonance and 42.1 pb-1 taken in the neighboring continuum. We measure the inclusive pi-0 and eta-spectra for direct gamma(1 S) --> 3 g decays and continuum processes e+ e- --> qqBAR and obtain the following mean particle multiplicities per event:[GRAPHICS]We compare our results with predictions of different fragmentation models and with other measurements performed in e+ e- annihilation at similar center-of-mass energies.

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