Title:
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Measurement of D0−¯¯¯D0 Mixing from a Time-Dependent Amplitude Analysis of D0→K+π−π0 Decays
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Author:
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Garra Ticó, Jordi; Graugés Pous, Eugeni; BABAR Collaboration
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Other authors:
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Universitat de Barcelona |
Abstract:
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We present evidence of D 0 − ¯¯¯ D 0 mixing using a time-dependent amplitude analysis of the decay D 0 → K + π − π 0 in a data sample of 384 fb − 1 collected with the BABAR detector at the PEP-II e + e − collider at the Stanford Linear Accelerator Center. Assuming C P conservation, we measure the mixing parameters x ′ K π π 0 = [ 2.61 + 0.57 − 0.68 ( stat ) ± 0.39 ( syst ) ] % , y ′ K π π 0 = [ − 0.06 + 0.55 − 0.64 ( 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 C P violation in mixing. |
Subject(s):
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-Física de partícules -Experiments -Particle physics -Experiments |
Rights:
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(c) American Physical Society, 2009
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Document type:
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Article Article - Published version |
Published by:
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American Physical Society
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