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Model-independent measurement of mixing parameters in D0 → K S 0 π+π− decays
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LHCb Collaboration (Including: Back, J. J., Blake, Thomas, Craik, Daniel, Crocombe, Andrew, Dossett, D., Gershon, T. J., Kreps, Michal, Langenbruch, Christoph, Latham, Thomas, Loh, D., Mathad, Abhijit , O'Hanlon, Daniel P., Pilar, T., Poluektov, Anton, Reid, Matthew M., Wallace, Charlotte and Whitehead, M. (Mark)). (2016) Model-independent measurement of mixing parameters in D0 → K S 0 π+π− decays. Journal of High Energy Physics, 2016 . 33. doi:10.1088/1748-0221/9/12/P12005 ISSN 1029-8479.
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Official URL: http://dx.doi.org/10.1007/JHEP04(2016)033
Abstract
The first model-independent measurement of the charm mixing parameters in the decay D 0 → K S 0 π + π − 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
x=(−0.86±0.53±0.17)×10−2,y=(+0.03±0.46±0.13)×10−2,
x=(−0.86±0.53±0.17)×10−2,y=(+0.03±0.46±0.13)×10−2,
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.
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