Using about 950000 hadronic events collected during 1991 and 1992 with the ALEPH detector, the ratios rb = αs b αs udsc and ruds = αs uds αs cb have been measured in order to test the flavour independence of the strong coupling constant αs. The analysis is based on event-shape variables using the full hadronic sample, two b-quark samples enriched by lepton tagging and lifetime tagging, and a light-quark sample enriched by lifetime antitagging. The combined results are rb = 1.002±0.023 and ruds = 0.971 ± 0.023.

Buskulic, D., Casper, D., Debonis, I., Decamp, D., Ghez, P., Goy, C., et al. (1995). Test of the flavour independence of αs. PHYSICS LETTERS. SECTION B, 355(1-2), 381-393 [10.1016/0370-2693(95)00713-U].

Test of the flavour independence of αs

CARPINELLI, Massimo;
1995

Abstract

Using about 950000 hadronic events collected during 1991 and 1992 with the ALEPH detector, the ratios rb = αs b αs udsc and ruds = αs uds αs cb have been measured in order to test the flavour independence of the strong coupling constant αs. The analysis is based on event-shape variables using the full hadronic sample, two b-quark samples enriched by lepton tagging and lifetime tagging, and a light-quark sample enriched by lifetime antitagging. The combined results are rb = 1.002±0.023 and ruds = 0.971 ± 0.023.
Articolo in rivista - Articolo scientifico
Physics
English
381
393
13
Buskulic, D., Casper, D., Debonis, I., Decamp, D., Ghez, P., Goy, C., et al. (1995). Test of the flavour independence of αs. PHYSICS LETTERS. SECTION B, 355(1-2), 381-393 [10.1016/0370-2693(95)00713-U].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/390316
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