Model-independent measurement of mixing parameters in $D^0 \to K_S \pi^+ \pi^-$ decays

Abstract : The first model-independent measurement of the charm mixing parameters in the decay $D^0 \to K_S \pi^+ \pi^-$ is reported, using a sample of $pp$ collision data recorded by the LHCb experiment, corresponding to an integrated luminosity of 1.0 fb$^{-1}$ at a centre-of-mass energy of 7 TeV. The measured values are \begin{eqnarray*} x &=& (+0.86 \pm 0.53 \pm 0.17) \times 10^{-2}, \\ y &=& (+0.03 \pm 0.46 \pm 0.13) \times 10^{-2}, \end{eqnarray*} where the first uncertainties are statistical and include small contributions due to the external input for the strong phase measured by the CLEO collaboration, and the second uncertainties are systematic. The results are consistent with the current world averages.
Document type :
Journal articles
Complete list of metadatas

http://hal.in2p3.fr/in2p3-01212701
Contributor : Sabine Starita <>
Submitted on : Wednesday, October 7, 2015 - 9:49:35 AM
Last modification on : Monday, June 3, 2019 - 1:38:03 PM

Links full text

Identifiers

Citation

R. Aaij, Y. Amhis, S. Barsuk, M. Borsato, O. Kochebina, et al.. Model-independent measurement of mixing parameters in $D^0 \to K_S \pi^+ \pi^-$ decays. Journal of High Energy Physics, Springer Verlag (Germany), 2016, 04, pp.033. ⟨10.1007/JHEP04(2016)033⟩. ⟨in2p3-01212701⟩

Share

Metrics

Record views

246