Study a<SUB>0</SUB>(980)}-f<SUB>0</SUB>(980) mixing in charmonium decays

WU Jia-Jun; ZHAO Qiang; ZOU Bing-Song

doi:10.1088/1674-1137/34/6/038

Chinese Physics C> 2010, Vol. 34> Issue(6) : 848-854 DOI: 10.1088/1674-1137/34/6/038

Study a₀(980)}-f₀(980) mixing in charmonium decays

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Abstract：
In this proceeding, we propose to directly measure the a⁰₀(980)-f₀(980) mixing in J/ψ→φ f₀(980)→φa⁰₀(980) and χ_c1→π⁰φa⁰₀(980)→π⁰f₀(980) with the upgraded Beijing Electron Positron Collider(BEPCII) with BESIII detector. We show that a narrow peak of about 8 MeV will be produced by the φa⁰₀(980)-f₀(980) mixing, and the predominant feature makes it standing out from the background contributions. The predicted branching ratios for these two reactions are both expected to be about O(10^－6), which is unambiguously accessible with 10⁹ J/ψ and 3×10⁸ χ_c1 at BESⅢ.

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WU Jia-Jun, ZHAO Qiang and ZOU Bing-Song. Study a₀(980)}-f₀(980) mixing in charmonium decays[J]. Chinese Physics C, 2010, 34(6): 848-854. doi: 10.1088/1674-1137/34/6/038

WU Jia-Jun, ZHAO Qiang and ZOU Bing-Song. Study a₀(980)}-f₀(980) mixing in charmonium decays[J]. Chinese Physics C, 2010, 34(6): 848-854. doi: 10.1088/1674-1137/34/6/038 shu

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Received: 2010-01-26
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Study a₀(980)}-f₀(980) mixing in charmonium decays

Corresponding author: ZHAO Qiang,

Received Date: 2010-01-26

Accepted Date: 1900-01-01

Available Online: 2010-06-05

Abstract:

In this proceeding, we propose to directly measure the a⁰₀(980)-f₀(980) mixing in J/ψ→φ f₀(980)→φa⁰₀(980) and χ_c1→π⁰φa⁰₀(980)→π⁰f₀(980) with the upgraded Beijing Electron Positron Collider(BEPCII) with BESIII detector. We show that a narrow peak of about 8 MeV will be produced by the φa⁰₀(980)-f₀(980) mixing, and the predominant feature makes it standing out from the background contributions. The predicted branching ratios for these two reactions are both expected to be about O(10^－6), which is unambiguously accessible with 10⁹ J/ψ and 3×10⁸ χ_c1 at BESⅢ.

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Study a₀(980)}-f₀(980) mixing in charmonium decays

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Study a₀(980)}-f₀(980) mixing in charmonium decays

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Study a0(980)}-f0(980) mixing in charmonium decays

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Study a0(980)}-f0(980) mixing in charmonium decays

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Study a₀(980)}-f₀(980) mixing in charmonium decays

Study a₀(980)}-f₀(980) mixing in charmonium decays