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Measurement of the neutral D meson mixing parameters in a time-dependent amplitude analysis of the D0 →π+π-π0 decay
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We perform the first measurement on the D 0 − ¯ D 0 mixing parameters using a time-dependent amplitude analysis of the decay D 0 → π + π − π 0 . The data were recorded with the BABAR detector at center-of-mass energies at and near the Υ ( 4 S ) resonance, and correspond to an integrated luminosity of approximately 468.1 fb − 1 . The neutral D meson candidates are selected from D ∗ ( 2010 ) + → D 0 π + s decays where the flavor at the production is identified by the charge of the low-momentum pion, π + s . The measured mixing parameters are x = ( 1.5 ± 1.2 ± 0.6 ) % and y = ( 0.2 ± 0.9 ± 0.5 ) % , where the quoted uncertainties are statistical and systematic, respectively.
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GRAUGÉS POUS, Eugeni and BABAR Collaboration. Measurement of the neutral D meson mixing parameters in a time-dependent amplitude analysis of the D0 →π+π-π0 decay. Physical Review D. 2016. Vol. 93, num. 11, pags. 112014-1-112014-10. ISSN 1550-7998. [consulted: 8 of June of 2026]. Available at: https://hdl.handle.net/2445/119373