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

WANG Wei

doi:10.1088/1674-1137/32/10/001

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2024年10月30日

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

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

WANG Wei ^, ,

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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 K_Sπ⁰ 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.

References

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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. 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-D⁰ mixing 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-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 K_Sπ⁰ 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.