We present evidence of D0-D̄0 mixing using a time-dependent amplitude analysis of the decay D0→K+π-π0 in a data sample of 384fb-1 collected with the BABAR detector at the PEP-II e+e- collider at the Stanford Linear Accelerator Center. Assuming CP conservation, we measure the mixing parameters xKππ0′=[2.61-0.68+0.57(stat)±0.39(syst)]%, yKππ0′=[-0.06-0.64+0.55(stat)±0.34(syst)]%. This result is inconsistent with the no-mixing hypothesis with a significance of 3.2 standard deviations. We find no evidence of CP violation in mixing.

Aubert, B., Bona, M., Karyotakis, Y., Lees, J., Poireau, V., Prencipe, E., et al. (2009). Measurement of D0-D̄0 Mixing from a Time-Dependent Amplitude Analysis of D0→K+π-π0 Decays. PHYSICAL REVIEW LETTERS, 103(21) [10.1103/PhysRevLett.103.211801].

Measurement of D0-D̄0 Mixing from a Time-Dependent Amplitude Analysis of D0→K+π-π0 Decays

CARPINELLI, Massimo;
2009

Abstract

We present evidence of D0-D̄0 mixing using a time-dependent amplitude analysis of the decay D0→K+π-π0 in a data sample of 384fb-1 collected with the BABAR detector at the PEP-II e+e- collider at the Stanford Linear Accelerator Center. Assuming CP conservation, we measure the mixing parameters xKππ0′=[2.61-0.68+0.57(stat)±0.39(syst)]%, yKππ0′=[-0.06-0.64+0.55(stat)±0.34(syst)]%. This result is inconsistent with the no-mixing hypothesis with a significance of 3.2 standard deviations. We find no evidence of CP violation in mixing.
Articolo in rivista - Articolo scientifico
BABAR detector
English
2009
103
21
211801
none
Aubert, B., Bona, M., Karyotakis, Y., Lees, J., Poireau, V., Prencipe, E., et al. (2009). Measurement of D0-D̄0 Mixing from a Time-Dependent Amplitude Analysis of D0→K+π-π0 Decays. PHYSICAL REVIEW LETTERS, 103(21) [10.1103/PhysRevLett.103.211801].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/389486
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