Observation of $D^0-\bar{D}^0$ Mixing in $e^+e^-$ Collisions - INSPIRE

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Observation of $D^0-\bar{D}^0$ Mixing in $e^+e^-$ Collisions

Belle

Collaboration

•

B.R. Ko
(
- Korea U.
)

Jan 14, 2014

6 pages

Published in:

Phys.Rev.Lett. 112 (2014) 11, 111801,
Phys.Rev.Lett. 112 (2014) 13, 139903 (addendum)

Published: Mar 17, 2014

e-Print:

1401.3402 [hep-ex]

DOI:

PDG:

{{\mathit D}^{0}}

\rightarrow

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

Experiments:

KEK-BF-BELLE

View in:

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Abstract: (APS)

We observe D0-D¯0 mixing in the decay D0→K+π- using a data sample of integrated luminosity 976 fb−1 collected with the Belle detector at the KEKB e+e- asymmetric-energy collider. We measure the mixing parameters x′2=(0.09±0.22)×10-3 and y′=(4.6±3.4)×10-3 and the ratio of doubly Cabibbo-suppressed to Cabibbo-favored decay rates RD=(3.53±0.13)×10-3, where the uncertainties are statistical and systematic combined. Our measurement excludes the no-mixing hypothesis at the 5.1 standard deviation level.

Note:

6 pages, 4 figures

12.15.Ff
13.25.Ft
14.40.Lb
D0: decay rate
BELLE
KEK-B
electron positron: annihilation
D0: hadronic decay
D0 anti-D0: mixing
decay rate: ratio

References(21)

Figures(4)

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