BOSE-EINSTEIN CORRELATIONS IN E(-) ANNIHILATION IN THE UPSILON(1S) AND CONTINUUM()E()

Authors
BLINOV AE BLINOV VE BONDAR AE BUKIN AD GROSHEV VR KLIMENKO SG ONUCHIN AP PANIN VS PROTOPOPOV IY SHAMOV AG SIDOROV VA SKOVPEN YI SKRINSKY AN TAYURSKY VA TELNOV VI TIKHONOV YA TUMAIKIN GM UNDRUS AE VOROBIOV AI ZHILICH VN
Citation
Ae. Blinov et al., BOSE-EINSTEIN CORRELATIONS IN E(-) ANNIHILATION IN THE UPSILON(1S) AND CONTINUUM()E(), Zeitschrift fur Physik. C, Particles and fields, 69(2), 1996, pp. 215-222
Citations number
30
Categorie Soggetti
Physics, Particles & Fields
Journal title
Zeitschrift fur Physik. C, Particles and fields → ACNP
ISSN journal
01709739
Volume
69
Issue
2
Year of publication
1996
Pages
215 - 222
Database
ISI
SICI code
0170-9739(1996)69:2<215:BCIEAI>2.0.ZU;2-Y
Abstract
Bose-Einstein correlations in direct Upsilon(1S) decays and continuum in the energy region root s = 7.2-10.3 GeV have been studied using dat a taken with the MD-1 detector at VEPP-4 storage ring. Assuming gaussi an density of the pion source the data indicate the radius of the sour ce tau = 0.73 +/- 0.10 +/- 0.04 fm for direct Upsilon(1S) decays and t au = 0.83 +/- 0.22 +/- 0.05 fm for the continuum. The correlation stre ngths lambda for both data samples also are similar. Thus Bose-Einstei n correlations do not reveal a noticeable difference between quark and gluon fragmentation.