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Measurement of D-0-(D)over-bar(0) mixing using the ratio of lifetimes for the decays D-0 -> K-pi(+) and K+K-

Abstract:

We measure the rate of D0-D̄0 mixing with the observable yCP=(τKπ/τKK)-1, where τKK and τKπ are, respectively, the mean lifetimes of CP-even D0→K+K- and CP-mixed D0→K-π+ decays, using a data sample of 384fb-1 collected by the BABAR detector at the SLAC PEP-II asymmetric-energy B Factory. From a sample of D0 and D̄0 decays where the initial flavor of the decaying meson is not determined, we obtain yCP=[1.12±0.26(stat)±0.22(syst)]%, which excludes the no-mixing hypothesis at 3.3σ, including bot...

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Publication status:
Published

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Publisher copy:
10.1103/PhysRevD.80.071103

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Journal:
Physical Review D More from this journal
Volume:
80
Issue:
7
Publication date:
2009-10-01
DOI:
EISSN:
1550-2368
ISSN:
1550-7998
Language:
English
Pubs id:
pubs:211359
UUID:
uuid:e703d07f-74ca-420b-82b7-d3fd26c233e5
Local pid:
pubs:211359
Source identifiers:
211359
Deposit date:
2012-12-19

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