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EVIDENCE FOR A SPIN-1 GLUON IN 3-JET EVENTS

Abstract:

High-energy e+e--annihilation events obtained in the TASSO detector at PETRA have been used to determine the spin of the gluon in the reaction e+e- → qqg. 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 d...

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Publication status:
Published

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Journal:
Physics Letters B More from this journal
Volume:
97
Issue:
3-4
Pages:
453-458
Publication date:
1980-01-01
DOI:
ISSN:
0370-2693
Language:
English
Pubs id:
pubs:15046
UUID:
uuid:67976a5a-f428-4545-b6bc-832c273d540e
Local pid:
pubs:15046
Source identifiers:
15046
Deposit date:
2012-12-19

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