We present a measurement of D-0-(D) over bar (0) mixing parameters using the ratios of lifetimes extracted from samples of D-0 mesons decaying to K(-)pi(+), K-K+, and pi(-)pi(+). Using 91 fb(-1) of data collected by the BABAR detector at the PEP-II asymmetric-energy B Factory, we obtain a value Y=[0.8+/-0.4(stat.)(-0.4)(+0.5)(syst.)]%, which, in the limit of CP conservation, corresponds to the mixing parameter y=DeltaGamma/2Gamma. Using the difference in lifetimes of D-0 and (D) over bar (0) mesons, we obtain the CP-violation parameter DeltaY=[-0.8+/-0.6(stat.)+/-0.2(syst.)]%.

Aubert, B., Barate, R., Boutigny, D., Gaillard, J., Hicheur, A., Karyotakis, Y., et al. (2003). Limits on D0-D̄0 Mixing and CP Violation from the Ratio of Lifetimes for Decay to K-π+, K -K+, and π-π+. PHYSICAL REVIEW LETTERS, 91(12), 1-7 [10.1103/PhysRevLett.91.121801].

Limits on D0-D̄0 Mixing and CP Violation from the Ratio of Lifetimes for Decay to K-π+, K -K+, and π-π+

CARPINELLI, Massimo;
2003

Abstract

We present a measurement of D-0-(D) over bar (0) mixing parameters using the ratios of lifetimes extracted from samples of D-0 mesons decaying to K(-)pi(+), K-K+, and pi(-)pi(+). Using 91 fb(-1) of data collected by the BABAR detector at the PEP-II asymmetric-energy B Factory, we obtain a value Y=[0.8+/-0.4(stat.)(-0.4)(+0.5)(syst.)]%, which, in the limit of CP conservation, corresponds to the mixing parameter y=DeltaGamma/2Gamma. Using the difference in lifetimes of D-0 and (D) over bar (0) mesons, we obtain the CP-violation parameter DeltaY=[-0.8+/-0.6(stat.)+/-0.2(syst.)]%.
Articolo in rivista - Articolo scientifico
Computer simulation; Data acquisition; Monte Carlo methods; Radiation effects; Mesons; Charged particles;
English
2003
91
12
1
7
121801
none
Aubert, B., Barate, R., Boutigny, D., Gaillard, J., Hicheur, A., Karyotakis, Y., et al. (2003). Limits on D0-D̄0 Mixing and CP Violation from the Ratio of Lifetimes for Decay to K-π+, K -K+, and π-π+. PHYSICAL REVIEW LETTERS, 91(12), 1-7 [10.1103/PhysRevLett.91.121801].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/390008
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