Measurement of $D^0 - \bar{D}^0$ mixing from a time-dependent amplitude analysis of $D^0 \to K^{+} \pi^{-} \pi^0$ decays - INSPIRE

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Measurement of $D^0 - \bar{D}^0$ mixing from a time-dependent amplitude analysis of $D^0 \to K^{+} \pi^{-} \pi^0$ decays

BaBar

Collaboration

Jul, 2008

7 pages

Published in:

Phys.Rev.Lett. 103 (2009) 211801

e-Print:

0807.4544 [hep-ex]

DOI:

10.1103/PhysRevLett.103.211801

PDG:

{{\mathit D}^{0}}

\rightarrow

{{\mathit K}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}

{{\overline{\mathit D}}^{0}}

Report number:

BABAR-PUB-08-026,
SLAC-PUB-13320

Experiments:

SLAC-PEP2-BABAR

View in:

reference search97 citations

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Abstract: (arXiv)

We present evidence of

D^0

-

\bar{D^0}

mixing using a time-dependent amplitude analysis of the decay D0->K+pi-pi0 in a data sample of 384 fb^-1 collected with the BaBar detector at the PEP-II e+e- collider at SLAC. Assuming CP conservation, we measure the mixing parameters x'_{Kpipi0} = [2.61^{+0.57}_{-0.68} (stat.) +- 0.39 (syst.)]%, y'_{Kpipi0} = [-0.06 ^{+0.55}_{-0.64} (stat.) +- 0.34 (syst.)]%. The confidence level for the data to be consistent with the no-mixing hypothesis is 0.1%, including systematic uncertainties. 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.

Note:

7 pages, 8 postscript figures, submitted to PRL

11.30.Er
12.15.Mm
13.25.Ft
14.40.Lb
electron positron: annihilation
D0: hadronic decay
mass spectrum: (K+ pi- pi0)
Dalitz plot
invariance: CP
D0 anti-D0: mixing

References(20)

Figures(8)

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