THESE VALUES OF R = SIG(HAD)/SIG(MU) ARE TABULATED IN THE RECORD OF THE THESIS OF A. BACKER, DESY-F33-77-03 (1977).
PRELIMINARY DATA.
DATA GIVEN IN J. BURMESTER ET AL., PL 68B, 283 (1977).
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SINGLE CHARGED PARTICLE MOMENTUM DISTRIBUTION.
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DATA ON THE TOTAL HADRONIC CROSS SECTION AND R WERE REPORTED BY R. F. SCHWITTERS, STANFORD CONF (1975).
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RADIATIVE TAILS OF PSI RESONANCES HAVE BEEN REMOVED. SIG(HAD) IS NOT TABULATED FOR 4.0 TO 4.4 GEV AS THE DATA POINTS ARE TOO CLOSE TO DISTINGUISH FROM THE GRAPH.
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The angular distribution of 2720 tracks of 1085 hadronic final states produced from (e+e-) annihilation has been studied in the 1.2 to 3.0 GeV total centre-of-mass energy range. If we parametrize the angular distribution in terms off(θ) =1 + A cos2 θ, where 6 is the angle between the hadronic track produced and the colliding-beam direction, the results show thatA is less than 0.21, with 90% confidence.
ANGULAR DISTRIBUTION OF CHARGED HADRONS FOUND TO BE 1 + (0.07 +- 0.11)*(COS(THETA)**2).