X structures in B+ → J/ψ ϕ K+ as one-loop and double-triangle threshold cusps
The LHCb data on B+→J/ψϕK+ show four peaks and three dips in the J/ψϕ invariant mass distribution, and the peaks are interpreted as X(4140), X(4274), X(4500) and X(4685)/X(4700) resonance contributions. Interestingly, all the peaks and dips are located at (or close to) Ds⁎D¯s(⁎), Ds0⁎(2317)D¯s(⁎), D...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-11-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269322006207 |