Chinese Physics C > 2008, Vol. 32 > Issue(10): 773-775 DOI: 10.1088/1674-1137/32/10/001

Measuring D⁰-D⁰mixing in D→f₀(980) K^*and more

WANG Wei^,,

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Abstract：

We investigate the D⁰-D⁰mixing through the doubly Cabibbo suppressed (DCS) channel D0→f₀(980)K^*0and its charge conjugate channel, in which the K^*0meson is reconstructed in both K⁺π^－and K_Sπ⁰final 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.

References

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WANG Wei and Measuring D ⁰-D ⁰mixing in D→f ₀(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 D ⁰-D ⁰mixing in D→f ₀(980) K ^*and more[J]. Chinese Physics C, 2008, 32(10): 773-775. doi:10.1088/1674-1137/32/10/001 shu

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Received: 2008-04-03
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

Measuring D⁰-D⁰mixing in D→f₀(980) K^*and more

WANG Wei^,

Corresponding author:WANG Wei,

Received Date:2008-04-03
Accepted Date:2008-04-30
Available Online:2008-10-05

Abstract:

We investigate the D⁰-D⁰mixing through the doubly Cabibbo suppressed (DCS) channel D0→f₀(980)K^*0and its charge conjugate channel, in which the K^*0meson is reconstructed in both K⁺π^－and K_Sπ⁰final 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.