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INCLUSIVE J-PRODUCTION IN Z(0) DECAYS

Abstract:

Inclusive J production in Z0 decays is observed via the leptonic decay mode J → ℓ+ℓ- (ℓ = e,μ). We measure the branching ratio Br(Z0 → J + X) = (4.1 ± 0.7 (stat.) ± 0.3 (sys.)) × 10-3. We have calculated the fraction of the J mesons from b-hadron decay and find a branching ratio of Br(b → J + X)= (1.3±0.2(stat.)±0.2(sys.)) × 10-2. We determine the average fractional energy of bottom hadrons 〈XE > = 0.70±0.03 (stat.)+0.02-0.01 (sys.) using the momentum spectrum of the J mesons. From a study...

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Publication status:
Published

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Journal:
PHYSICS LETTERS B
Volume:
288
Issue:
3-4
Pages:
412-420
Publication date:
1992-08-27
DOI:
ISSN:
0370-2693
URN:
uuid:248e6e5e-92ba-40f4-94f0-0d7fe90b1803
Source identifiers:
7088
Local pid:
pubs:7088

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