CERN Accelerating science


Article
Title A study of the hadronic angular distribution in $(e^{+}e^{-}$ processes from 1.2 to 3.0 GeV
Author(s) Bernardini, M (CERN ; INFN, Bologna ; Bologna U. ; Frascati) ; Bollini, D (CERN ; INFN, Bologna ; Bologna U. ; Frascati) ; Brunini, P L (CERN ; INFN, Bologna ; Bologna U. ; Frascati) ; Fiorentino, E (CERN ; INFN, Bologna ; Bologna U. ; Frascati) ; Massam, T (CERN ; INFN, Bologna ; Bologna U. ; Frascati) ; Monari, L (CERN ; INFN, Bologna ; Bologna U. ; Frascati) ; Palmonari, F (CERN ; INFN, Bologna ; Bologna U. ; Frascati) ; Rimondi, F (CERN ; INFN, Bologna ; Bologna U. ; Frascati) ; Zichichi, A (CERN ; INFN, Bologna ; Bologna U. ; Frascati)
Publication 1975
In: Lepton physics at CERN and Frascati, pp.343
In: 17th International Conference on High-energy Physics, London, UK, 1 - 10 Jul 1974
DOI 10.1007/BF02900540
Subject category Particle Physics - Phenomenology ; Particle Physics - Experiment
Abstract The angular distribution of 2720 tracks of 1085 hadronic final states produced from (e/sup +/e/sup -/) annihilation has been studied in the 1.2 to 3.0 GeV total centre-of-mass energy range. If the angular distribution is parametrised in terms of f( theta )=1+A cos/sup 2/ theta where theta is the angle between the hadronic track produced and the colliding-beam direction, the results show that A is less than 0.21, with 90% confidence. (2 refs).

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