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 D(0) decays were reconstructed, of which 80% originate from Z --> events. The forward-backward asymmetry was measured at three energy points: A(FB)(c)(root s = 89.37 GeV) = (-1.0 +/- 4.4)% A(FB)(c)(root s = 91.22 GeV) = (6.3 +/- 1.0)% A(FB)(c)(root s = 92.96 GeV) = (11.0 +/- 3.4)%. From this analysis, a value of the effective electroweak mixing angle sin(2)theta(W)(eff) = 0.2321 +/- 0.0016 is extracted.

R., B., D., B., D., D., P., G., C., G., J. P., L., 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

CIOCCI, MARIA AGNESE;MARROCCHESI, PIER SIMONE;
1998-01-01

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 D(0) decays were reconstructed, of which 80% originate from Z --> events. The forward-backward asymmetry was measured at three energy points: A(FB)(c)(root s = 89.37 GeV) = (-1.0 +/- 4.4)% A(FB)(c)(root s = 91.22 GeV) = (6.3 +/- 1.0)% A(FB)(c)(root s = 92.96 GeV) = (11.0 +/- 3.4)%. From this analysis, a value of the effective electroweak mixing angle sin(2)theta(W)(eff) = 0.2321 +/- 0.0016 is extracted.
1998
R., B., D., B., D., D., P., G., C., G., J. P., L., 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/11365/37599
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