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Bose-Einstein correlations in e+e− annihilation in the γ(1S) and continuum |
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| Authors: | A E Blinov V E Blinov A E Bondar A D Bukin V R Groshev S G Klimenko A P Onuchin V S Panin I Ya Protopopov A G Shamov V A Sidorov Yu I Skovpen A N Skrinsky V A Tayursky V I Telnov Yu A Tikhonov G M Tumaikin A E Undrus A I Vorobiov V N Zhilich |
| Institution: | 1. Budker Institute of Nuclear Physics, 630090, Novosibirsk, Russia |
| Abstract: | Bose-Einstein correlations in direct γ(1S) decays and continuum in the energy region √s=7.2?10.3 GeV have been studied using data taken with the MD-1 detector at VEPP-4 storage ring. Assuming gaussian density of the pion source the data indicate the radius of the sourceπ=0.73±0.10±0.04 fm for direct γ (1S) decays andπ=0.83±0.22±0.05 fm for the continuum. The correlation strengthsλ for both data samples also are similar. Thus Bose-Einstein correlations do not reveal a noticeable difference between quark and gluon fragmentation. |
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