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Properties of hadron final states in e+e− annihilation at 13 GeV and 17 GeV center of mass energies

Brandelik, R et al. (1979) Properties of hadron final states in e+e− annihilation at 13 GeV and 17 GeV center of mass energies. Physics Letters B, 83. pp. 261-266. ISSN 0370-2693

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Abstract

We have observed e+e− hadrons at C.M. energies of 13 GeV and 17 GeV at PETRA using the TASSO detector. We find R(13 GeV) = 5.6 ± 0.7 and R(17 GeV) = 4.0 ± 0.7. The additional systematic uncertainty is 20%. Comparing inclusive charged hadron spectra we observe scaling between 5 GeV and 17 GeV for x = p/pbeam > 0.2; however the 13 GeV cross section is above the 17 GeV cross section for smaller x. This may be due to copious b production. The events become increasingly jet like at high energies as evidenced by a shrinking sphericity distribution with increasing energy.

Item Type: Article
Subjects: Q Science > QC Physics
Schools: School of Applied Sciences
Depositing User: Sharon Beastall
Date Deposited: 17 Mar 2011 11:30
Last Modified: 23 Mar 2011 09:53
URI: http://eprints.hud.ac.uk/id/eprint/9856

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