Observation of D[superscript 0]-D̅ [superscript 0] Oscillations
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Aaij-2013-Observation of D-0.pdf
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318.3 KB
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1219835f60dafddc6b7ba258a25f7439
Date Issued
March 2013
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Aaij, R., C. Abellan Beteta, A. Adametz, B. Adeva, M. Adinolfi, C. Adrover, A. Affolder, et al. “Observation of D^{0}-D[over ¯]^{0} Oscillations.” Physical Review Letters 110, no. 10 (March 2013). © 2013 CERN, for the LHCb Collaboration
Version
Final published version
Abstract
We report a measurement of the time-dependent ratio of D[superscript 0]→K[superscript +]π[superscript -] to D[superscript 0]→K[superscript -]π[superscript +] decay rates in D[superscript *+]-tagged events using 1.0 fb[superscript -1] of integrated luminosity recorded by the LHCb experiment. We measure the mixing parameters x[superscript ′2]=(-0.9±1.3)×10[superscript -4], y[subscript ′]=(7.2±2.4)×10[superscript -3], and the ratio of doubly-Cabibbo-suppressed to Cabibbo-favored decay rates R[subscript D]=(3.52±0.15)×10[superscript -3], where the uncertainties include statistical and systematic sources. The result excludes the no-mixing hypothesis with a probability corresponding to 9.1 standard deviations and represents the first observation of D[superscript 0]-D̅ [superscript 0] oscillations from a single measurement.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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Creative Commons Attribution 3.0
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.110.101802
