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We report a measurement of time-integrated CP-violation asymmetries in the resonant substructure of the three-body decay D0 -> Ks(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) -> D0 pi(+) and D*-(2010) -> (D0) over bar 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 D0 and (D0) over bar 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.

T., A., B. A., G., S., A., D., A., A., A., A., A., et al. (2012). Measurement of CP-violation asymmetries in D0 -> Ks(0)pi(+)pi(-). PHYSICAL REVIEW. D. PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 86(3), 032007-1-032007-15 [10.1103/PhysRevD.86.032007].

Measurement of CP-violation asymmetries in D0 -> Ks(0)pi(+)pi(-)

BARRIA, PATRIZIA;GAROSI, PAOLA;MAESTRO, PAOLO;RUFFINI, FABRIZIO;SCRIBANO, ANGELO;SQUILLACIOTI, PAOLA;
2012-01-01

Abstract

We report a measurement of time-integrated CP-violation asymmetries in the resonant substructure of the three-body decay D0 -> Ks(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) -> D0 pi(+) and D*-(2010) -> (D0) over bar 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 D0 and (D0) over bar 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
T., A., B. A., G., S., A., D., A., A., A., A., A., et al. (2012). Measurement of CP-violation asymmetries in D0 -> Ks(0)pi(+)pi(-). PHYSICAL REVIEW. D. PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 86(3), 032007-1-032007-15 [10.1103/PhysRevD.86.032007].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/41175
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