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Evidence for a spin-1 gluon in three-jet events

Brandelik, R et al. (1980) Evidence for a spin-1 gluon in three-jet events. Physics Letters B, 97 (3-4). pp. 453-458. ISSN 0370-2693

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Abstract

High-energy e+e- qq˜g annihilation events obtained in the TASSO detector at PETRA have been used to determine the spin of the gluon in the reaction e+e− → . We analysed angular correlations between the three jet axes. While vector gluons are consistent with the data (55% confidence limit), scalar gluons are disfavoured by 3.8 standard deviations, corresponding to a confidence level of about 10−4. Our conclusion is free of possible biases due to uncertainties in the fragmentation process or in determining the qq˜g kinematics from the observed hadrons.

Item Type: Article
Subjects: Q Science > QC Physics
Schools: School of Applied Sciences
Depositing User: Sharon Beastall
Date Deposited: 17 Mar 2011 12:43
Last Modified: 23 Mar 2011 13:22
URI: http://eprints.hud.ac.uk/id/eprint/9860

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