Evidence for D(0)-Dbar(0) Mixing [electronic resource].

Published:: Washington, D.C. : United States. Dept. of Energy, 2007.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description:: 7 pages : digital, PDF file
Additional Creators:: Stanford Linear Accelerator Center, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information

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Summary:

We present evidence for D°-{bar D}° mixing in D° → K⁺π⁻ decays from 384 fb⁻¹ of e⁺e⁻ colliding-beam data recorded near √s = 10.6GeV 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{sub 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.

Report Numbers:

E 1.99:slac-pub-12385
slac-pub-12385

Subject(s):

Particle Accelerators

Other Subject(s):

Note:

Published through SciTech Connect.
03/13/2007.
"slac-pub-12385"
"hep-ex/0703020"
Physical Review Letters ISSN 0031-9007; PRLTAO FT
Aubert, B.

Funding Information:

AC02-76SF00515

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