Evidence for D0-anti-D0 Mixing

B. Aubert; et al; The BABAR Collaboration

Evidence for D0-anti-D0 Mixing

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arxiv hep-ex/0703020 v1 pith:7BJYG35H submitted 2007-03-12 hep-ex

The BABAR Collaboration , B. Aubert , et al This is my paper

classification hep-ex

keywords evidencemixingstatsystd0-anti-d0findbabarcabibbo-favored

verification ladder T0 review T1 audit T2 compute T3 formal

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We present evidence for D0-anti-D0 mixing in D0 --> K+pi- decays from 384 fb^{-1} of e+e- colliding-beam data recorded near sqrt(s) 10.6 GeV with the BaBar detector at the PEP-II storage rings at SLAC. We find the mixing parameters x'^2 = [-0.22 +- 0.30 (stat.) +- 0.21 (syst.)] x 10^{-3} and y' = [9.7 +- 4.4 (stat.) +- 3.1 (syst.)] x 10^{-3}, and a correlation between them of -0.94. This result is inconsistent with the no-mixing hypothesis with a significance of 3.9 standard deviations. We measure R_D, the ratio of doubly Cabibbo-suppressed to Cabibbo-favored decay rates, to be [0.303 +- 0.016 (stat.) +- 0.010 (syst.)]%. We find no evidence for \CP violation.

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Charm physics
hep-ph 2025-06 unverdicted novelty 1.0 of 10

A review chapter summarizing the theoretical framework and experimental status of charm hadron lifetimes, D0 mixing, CP violation, and rare decays.

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