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Setting Limits on Supersymmetry Using Simplified Models
Published on: November 15, 2013
Strong decays of fully-charm tetraquarks into di-charmonia
Hua-Xing Chen1, Wei Chen2, Xiang Liu3
1School of Physics, Southeast University, Nanjing 210094, China; School of Physics, Beihang University, Beijing 100191, China.
Abstract:
We study strong decays of the possible fully-charm tetraquarks recently observed by LHCb, and calculate their relative branching ratios through the Fierz rearrangement. Together with our previous QCD sum rule study, our results suggest that the broad structure around 6.2-6.8 GeV can be interpreted as an S-wave ccc¯c¯ tetraquark state with JPC=0++ or 2++, and the narrow structure around 6.9 GeV can be interpreted as a P-wave one with JPC=0-+ or 1-+. These structures were observed in the di-J/ψ invariant mass spectrum, and we propose to confirm them in the di-ηc,J/ψhc,ηcχc0, and ηcχc1 channels. We also propose to search for their partner states having the negative charge-conjugation parity in the J/ψηc,J/ψχc0,J/ψχc1, and ηchc channels.
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