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We investigate the D0-0 mixing through the doubly Cabibbo suppressed (DCS) channel D0 →f0(980)K0 and its charge conjugate channel, in which the K0 meson is reconstructed in both K+π- and KSπ0 final state. Although the decay D0 →f0(980)K* has a small branching ratio, the final state mesons are relatively easy to identify. The f0(980) meson can be replaced by the S-wave π+π- state, or a longitudinally polarized vector meson ρ0. All mixing parameters, including the mass difference and decay width difference,can be extracted by studying the time-dependent decay width of these channels. We show that the method is valid in all regions for mixing parameters and it does not depend on the strong phase difference.
We investigate the D0-0 mixing through the doubly Cabibbo suppressed (DCS) channel D0 → f0 (980) K0 and its charge conjugate channel, where the K0 meson is reconstructed in both K + π- and KSπ0 final state. Although the decay D0 → f0 (980) K * has a small branching ratio, the final state mesons are relatively easy to identify. The f0 (980) meson can be replaced by the S-wave π + π-state, or a longitudinally polarized vector meson ρ0. All mixing parameters, including the mass difference and decay width difference, can be extracted by studying the time-dependent decay width of these channels. We show that the method is valid in all regions for mixing parameters and it does not depend on the strong phase difference.