A measurement of the time-dependent CP-violating (CPV) asymmetries in a b → sy process through the exclusive decay, was performed. A systematic uncertainty of 0.02 (0.02) due to tagging asymmetries in the signal and 0.02 (0.02) due to imperfect knowledge of the probability distribution function (PDF) was included. An event-shape Fisher discriminant in the maximum-likelihood fit was employed, from which the CPV measurements were extracted. For the continuum background, the functional form of the PDF was selected, which described each fit variable in data using the sideband regions of the other observables.

Aubert, B., Barate, R., Boutigny, D., Couderc, F., Gaillard, J., Hicheur, A., et al. (2004). Measurement of time-dependent CP-violating asymmetries in B0 → K*0γ(K*0 → K 0Sπ0) decays. PHYSICAL REVIEW LETTERS, 93(20), 1-7 [10.1103/PhysRevLett.93.201801].

Measurement of time-dependent CP-violating asymmetries in B0 → K*0γ(K*0 → K 0Sπ0) decays

CARPINELLI, Massimo;
2004

Abstract

A measurement of the time-dependent CP-violating (CPV) asymmetries in a b → sy process through the exclusive decay, was performed. A systematic uncertainty of 0.02 (0.02) due to tagging asymmetries in the signal and 0.02 (0.02) due to imperfect knowledge of the probability distribution function (PDF) was included. An event-shape Fisher discriminant in the maximum-likelihood fit was employed, from which the CPV measurements were extracted. For the continuum background, the functional form of the PDF was selected, which described each fit variable in data using the sideband regions of the other observables.
Articolo in rivista - Articolo scientifico
Error analysis; Kinematics; Linear accelerators; Mathematical models; Matrix algebra; Photons; Polarization; Probability distributions; Statistical methods; CP-violating asymmetries; Signal decays; Standard models (SM); Vertex positions; Detectors;
English
2004
93
20
1
7
201801
none
Aubert, B., Barate, R., Boutigny, D., Couderc, F., Gaillard, J., Hicheur, A., et al. (2004). Measurement of time-dependent CP-violating asymmetries in B0 → K*0γ(K*0 → K 0Sπ0) decays. PHYSICAL REVIEW LETTERS, 93(20), 1-7 [10.1103/PhysRevLett.93.201801].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/389929
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