A study of ccc¯c¯ tetraquark decays in 4 muons and in D(⁎)D¯(⁎) at LHC
Becchi, C., Ferretti, J., Giachino, A., Maiani, L., & Santopinto, E. (2020). A study of ccc¯c¯ tetraquark decays in 4 muons and in D(⁎)D¯(⁎) at LHC. Physics Letters B, 811, Article 135952. https://doi.org/10.1016/j.physletb.2020.135952
Julkaistu sarjassa
Physics Letters BPäivämäärä
2020Tekijänoikeudet
© 2020 The Author(s). Published by Elsevier B.V.
We perform a quantitative analysis of the decays of ccc¯c¯ tetraquarks with JPC=0++,2++ into 4 muons and into hidden- and open-charm mesons and estimate, for the first time, the fully charmed tetraquark decay width. The calculated cross section upper limit is ∼39(780) fb for the 4 muons channel, and ∼42(616) pb for the ⁎⁎D(⁎)D¯(⁎)→eμ channel, in the 0++(2++) case. Decay widths depend upon the additional parameter ξ=|ΨT(0)|2/|ΨJ/ψ(0)|2, which can be computed with a considerable error. We find Γ(0++)∼Γ(2++)=97±30. On the basis of our results and with the present sensitivity, LHCb should detect both 0++ and 2++ fully-charmed tetraquarks.
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ElsevierISSN Hae Julkaisufoorumista
0370-2693Asiasanat
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https://converis.jyu.fi/converis/portal/detail/Publication/47045041
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