A Dalitz plot analysis of approximately 12500 D0 events reconstructed in the hadronic decay D0→K̄0K+K- is presented. This analysis is based on a data sample of 91.5fb-1 collected with the BABAR detector at the PEP-II asymmetric-energy e+e- storage rings at SLAC running at center-of-mass energies on and 40 MeV below the Υ(4S) resonance. The events are selected from e+e-→cc̄ annihilations using the decay D*+→D0π+. The following ratio of branching fractions has been obtained: BR= Γ(D0→K̄0K+K-)Γ(D0→K̄0π+π-)=(15.8±0. 1(stat.)±0.5(syst.))×10-2. Estimates of fractions and phases for resonant and nonresonant contributions to the Dalitz plot are also presented. The a0(980)→K̄K projection has been extracted with little background. A search for CP asymmetries on the Dalitz plot has been performed.

Aubert, B., Barate, R., Boutigny, D., Couderc, F., Karyotakis, Y., Lees, J., et al. (2005). Dalitz plot analysis of D0→K̄0K+K-. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 72(5) [10.1103/PhysRevD.72.052008].

Dalitz plot analysis of D0→K̄0K+K-

CARPINELLI, Massimo;
2005

Abstract

A Dalitz plot analysis of approximately 12500 D0 events reconstructed in the hadronic decay D0→K̄0K+K- is presented. This analysis is based on a data sample of 91.5fb-1 collected with the BABAR detector at the PEP-II asymmetric-energy e+e- storage rings at SLAC running at center-of-mass energies on and 40 MeV below the Υ(4S) resonance. The events are selected from e+e-→cc̄ annihilations using the decay D*+→D0π+. The following ratio of branching fractions has been obtained: BR= Γ(D0→K̄0K+K-)Γ(D0→K̄0π+π-)=(15.8±0. 1(stat.)±0.5(syst.))×10-2. Estimates of fractions and phases for resonant and nonresonant contributions to the Dalitz plot are also presented. The a0(980)→K̄K projection has been extracted with little background. A search for CP asymmetries on the Dalitz plot has been performed.
Articolo in rivista - Articolo scientifico
BABAR detector
English
Aubert, B., Barate, R., Boutigny, D., Couderc, F., Karyotakis, Y., Lees, J., et al. (2005). Dalitz plot analysis of D0→K̄0K+K-. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 72(5) [10.1103/PhysRevD.72.052008].
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