# Measuring D0-D0 mixing in D→f0(980) K* and more

• We investigate the D0-D0 mixing through the doubly Cabibbo suppressed (DCS) channel D0→f0(980)K*0 and its charge conjugate channel, in which the K*0 meson is reconstructed in both K+π and K0 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.

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WANG Wei and Measuring D0-D0 mixing in D→f0(980) K* and more[J]. Chinese Physics C, 2008, 32(10): 773-775. doi: 10.1088/1674-1137/32/10/001
WANG Wei and Measuring D0-D0 mixing in D→f0(980) K* and more[J]. Chinese Physics C, 2008, 32(10): 773-775.
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Revised: 2008-04-30
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沈阳化工大学材料科学与工程学院 沈阳 110142

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## Measuring D0-D0 mixing in D→f0(980) K* and more

###### Corresponding author: WANG Wei,

Abstract:

We investigate the D0-D0 mixing through the doubly Cabibbo suppressed (DCS) channel D0→f0(980)K*0 and its charge conjugate channel, in which the K*0 meson is reconstructed in both K+π and K0 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.

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