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Measurement of D0D¯0 mixing and search for indirect CP violation using D0KS0π+π decays

T. Peng et al. (Belle Collaboration)
Phys. Rev. D 89, 091103(R) – Published 30 May 2014

Abstract

We report a measurement of D0D¯0 mixing parameters and a search for indirect CP violation through a time-dependent amplitude analysis of D0KS0π+π decays. The results are based on 921fb1 of data accumulated with the Belle detector at the KEKB asymmetric-energy e+e collider. Assuming CP conservation, we measure the mixing parameters x=(0.56±0.190.090.09+0.03+0.06)% and y=(0.30±0.150.050.06+0.04+0.03)%, where the errors are statistical, experimental systematic, and systematic due to the amplitude model, respectively. With CP violation allowed, the parameters |q/p|=0.900.150.040.05+0.16+0.05+0.06 and arg(q/p)=(6±11±34+3)° are found to be consistent with conservation of CP symmetry in mixing and in the interference between mixing and decay, respectively.

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  • Received 9 April 2014

DOI:https://doi.org/10.1103/PhysRevD.89.091103

© 2014 American Physical Society

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Vol. 89, Iss. 9 — 1 May 2014

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