The data set collected with the ALEPH detector from 1991 to 1995 at LEP has been analysed to measure the charm forward-backward asymmetry at the Z. Out of a total of 4.1 million hadronic Z decays, about 36000 high momentum D * +, D+ and D0 decays were reconstructed, of which 80% originate from Z → cc̄ events. The forward-backward asymmetry was measured at three energy points: AcFB(√s = 89.37GeV) = (-1.0 ± 4.4)% AcFB(√s = 91.22GeV) = (6.3 ± 1.0)% AcFB(√s = 92.96 GeV) = (11.0 ± 3.4)%. From this analysis, a value of the effective electroweak mixing angle sin2θeffw = 0.2321 ± 0.0016 is extracted.

Barate, R., Buskulic, D., Decamp, D., Ghez, P., Goy, C., Lees, J., et al. (1998). The forward-backward asymmetry for charm quarks at the Z. PHYSICS LETTERS. SECTION B, 434(3-4), 415-425 [10.1016/S0370-2693(98)00818-1].

The forward-backward asymmetry for charm quarks at the Z

CARPINELLI, Massimo;
1998

Abstract

The data set collected with the ALEPH detector from 1991 to 1995 at LEP has been analysed to measure the charm forward-backward asymmetry at the Z. Out of a total of 4.1 million hadronic Z decays, about 36000 high momentum D * +, D+ and D0 decays were reconstructed, of which 80% originate from Z → cc̄ events. The forward-backward asymmetry was measured at three energy points: AcFB(√s = 89.37GeV) = (-1.0 ± 4.4)% AcFB(√s = 91.22GeV) = (6.3 ± 1.0)% AcFB(√s = 92.96 GeV) = (11.0 ± 3.4)%. From this analysis, a value of the effective electroweak mixing angle sin2θeffw = 0.2321 ± 0.0016 is extracted.
Articolo in rivista - Articolo scientifico
Physics
English
1998
434
3-4
415
425
none
Barate, R., Buskulic, D., Decamp, D., Ghez, P., Goy, C., Lees, J., et al. (1998). The forward-backward asymmetry for charm quarks at the Z. PHYSICS LETTERS. SECTION B, 434(3-4), 415-425 [10.1016/S0370-2693(98)00818-1].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/390131
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