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Study of gluon versus quark fragmentation in Y → ggγ and e+e- → qq̄γ events at √s=10 GeV

Abstract:
Using data collected with the CLEO II detector at the Cornell Electron Storage Ring, we determine the ratio Rchrg for the mean charged multiplicity observed in Y(1S)→ggγ events, 〈n±gluon〉, to the mean charged multiplicity observed in e+e-→qq̄γ events, 〈n±quark〉. We find Rchrg≡〈n±gluon〉/〈n±quark〉=1.04 ±0.02(stat)±0.05(syst) for jet-jet masses less than 7 GeV.

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Journal:
Physical Review D More from this journal
Volume:
56
Issue:
1
Pages:
17-22
Publication date:
1997-07-01
ISSN:
0556-2821
Language:
English
Pubs id:
pubs:321861
UUID:
uuid:d0496ae0-1678-4afe-83d0-6225028253de
Local pid:
pubs:321861
Source identifiers:
321861
Deposit date:
2013-11-17

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