The value of the b quark mass at the M2scale defined in the MS renormalization scheme, mb(MZ), was determined using 2.8 million hadronic Z decays collected during 1992-1994 by the DELPHI detector to be mb(MZ) = 2.67 ± 0.25 (stat.) ± 0.34 (frag.) ± 0.27 (theo.) GeV/c2. The analysis considers NLO corrections to the three-jet production rate including mass effects, and the result obtained agrees with the QCD prediction of having a running b quark mass at an energy scale equal to MZ. This is the first time that such a measurement is performed far above the bb̄ production threshold. The study also verifies the flavour independence of the strong coupling constant for b and light quarks within 1% accuracy. © 1998 Elsevier Science B.V.

Abreu, P., Adam, W., Adye, T., Adzic, P., Ajinenko, I., Alekseev, G., et al. (1998). Mbat Mz. PHYSICS LETTERS. SECTION B, 418(3-4), 430-442.

Mbat Mz

Calvi, M.;Paganoni, M.;Ragazzi, S.;Tabarelli, T.;Terranova, F.;
1998

Abstract

The value of the b quark mass at the M2scale defined in the MS renormalization scheme, mb(MZ), was determined using 2.8 million hadronic Z decays collected during 1992-1994 by the DELPHI detector to be mb(MZ) = 2.67 ± 0.25 (stat.) ± 0.34 (frag.) ± 0.27 (theo.) GeV/c2. The analysis considers NLO corrections to the three-jet production rate including mass effects, and the result obtained agrees with the QCD prediction of having a running b quark mass at an energy scale equal to MZ. This is the first time that such a measurement is performed far above the bb̄ production threshold. The study also verifies the flavour independence of the strong coupling constant for b and light quarks within 1% accuracy. © 1998 Elsevier Science B.V.
Articolo in rivista - Articolo scientifico
Nuclear and High Energy Physics
English
1998
418
3-4
430
442
none
Abreu, P., Adam, W., Adye, T., Adzic, P., Ajinenko, I., Alekseev, G., et al. (1998). Mbat Mz. PHYSICS LETTERS. SECTION B, 418(3-4), 430-442.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/187148
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