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

  • In this proceeding, we propose to directly measure the a00(980)-f0(980) mixing in J/ψ→φ f0(980)→φa00(980) and χc1→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 χc1 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
Revised: 1900-01-01
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Study a0(980)}-f0(980) mixing in charmonium decays

    Corresponding author: ZHAO Qiang,

Abstract: 

In this proceeding, we propose to directly measure the a00(980)-f0(980) mixing in J/ψ→φ f0(980)→φa00(980) and χc1→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 χc1 at BESⅢ.

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