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We report a measurement of time-integrated CP-violation asymmetries in the resonant substructure of the three-body decay D-0 -> K-S(0)pi(+)pi(-) using CDF II data corresponding to 6.0 fb(-1) of integrated luminosity from Tevatron p (p) over bar collisions at root s = 1.96 TeV. The charm mesons used in this analysis come from D*+(2010) -> D-0 pi(+) and D*-(2010) -> (D) over bar (0)pi(-), where the production flavor of the charm meson is determined by the charge of the accompanying pion. We apply a Dalitz-amplitude analysis for the description of the dynamic decay structure and use two complementary approaches, namely, a full Dalitz-plot fit employing the isobar model for the contributing resonances and a model-independent bin-by-bin comparison of the D-0 and (D) over bar (0) Dalitz plots. We find no CP-violation effects and measure an asymmetry of A(CP) = (-0.05 +/- 0.57(stat) +/- 0.54(syst))% for the overall integrated CP-violation asymmetry, consistent with the standard model prediction.

Measurement of CP-violation asymmetries in D-0 -> K-S(0)pi(+)pi(-) / T., A., B. A., G., S., A., D., A., A., A., A., A., J., A., G., A., J. A., A., T., A., A., A., J., A., W., A., B., A., A., A., F., A., W., B., T., B., A., B.G., V. E., B., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 86:(2012), p. 032007. [10.1103/physrevd.86.032007]

Measurement of CP-violation asymmetries in D-0 -> K-S(0)pi(+)pi(-)

BAUCE, MATTEO;GIAGU, Stefano;IORI, Maurizio;MARGAROLI, Fabrizio;
2012

Abstract

We report a measurement of time-integrated CP-violation asymmetries in the resonant substructure of the three-body decay D-0 -> K-S(0)pi(+)pi(-) using CDF II data corresponding to 6.0 fb(-1) of integrated luminosity from Tevatron p (p) over bar collisions at root s = 1.96 TeV. The charm mesons used in this analysis come from D*+(2010) -> D-0 pi(+) and D*-(2010) -> (D) over bar (0)pi(-), where the production flavor of the charm meson is determined by the charge of the accompanying pion. We apply a Dalitz-amplitude analysis for the description of the dynamic decay structure and use two complementary approaches, namely, a full Dalitz-plot fit employing the isobar model for the contributing resonances and a model-independent bin-by-bin comparison of the D-0 and (D) over bar (0) Dalitz plots. We find no CP-violation effects and measure an asymmetry of A(CP) = (-0.05 +/- 0.57(stat) +/- 0.54(syst))% for the overall integrated CP-violation asymmetry, consistent with the standard model prediction.
2012
01 Pubblicazione su rivista::01a Articolo in rivista
Measurement of CP-violation asymmetries in D-0 -> K-S(0)pi(+)pi(-) / T., A., B. A., G., S., A., D., A., A., A., A., A., J., A., G., A., J. A., A., T., A., A., A., J., A., W., A., B., A., A., A., F., A., W., B., T., B., A., B.G., V. E., B., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 86:(2012), p. 032007. [10.1103/physrevd.86.032007]
01a Articolo in rivista
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/491939
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