We report a measurement of the time-dependent ratio of D0→K +π- to D0→K-π+ decay rates in D*+-tagged events using 1.0 fb-1 of integrated luminosity recorded by the LHCb experiment. We measure the mixing parameters x′2=(-0.9±1.3)×10-4, y′=(7.2±2.4)×10-3, and the ratio of doubly-Cabibbo-suppressed to Cabibbo-favored decay rates RD=(3. 52±0.15)×10-3, 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 D0-D̄0 oscillations from a single measurement. © 2013 CERN.

Observation of D0-D̄0 oscillations / R., A., C. A., B., A., A., B., A., M., A., C., A., A., A., Z., A., J., A., F., A., M., A., S., A., G., A., P. A., C., J. A., A., S., A., Y., A., L., A., J., A., R., A., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 110:10(2013). [10.1103/physrevlett.110.101802]

Observation of D0-D̄0 oscillations

SARTI, ALESSIO;SCIUBBA, Adalberto;
2013

Abstract

We report a measurement of the time-dependent ratio of D0→K +π- to D0→K-π+ decay rates in D*+-tagged events using 1.0 fb-1 of integrated luminosity recorded by the LHCb experiment. We measure the mixing parameters x′2=(-0.9±1.3)×10-4, y′=(7.2±2.4)×10-3, and the ratio of doubly-Cabibbo-suppressed to Cabibbo-favored decay rates RD=(3. 52±0.15)×10-3, 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 D0-D̄0 oscillations from a single measurement. © 2013 CERN.
2013
01 Pubblicazione su rivista::01a Articolo in rivista
Observation of D0-D̄0 oscillations / R., A., C. A., B., A., A., B., A., M., A., C., A., A., A., Z., A., J., A., F., A., M., A., S., A., G., A., P. A., C., J. A., A., S., A., Y., A., L., A., J., A., R., A., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 110:10(2013). [10.1103/physrevlett.110.101802]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/560354
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