Lattice calculation of the $$\eta _c\eta _c$$ η c η c and $$J/\psi J/\psi $$ J / ψ J / ψ s-wave scattering length
Abstract We calculate the s-wave scattering length in the $$0^+$$ 0 + sector of $$\eta _c\eta _c$$ η c η c and the $$2^+$$ 2 + sector of $$J/\psi J/\psi $$ J / ψ J / ψ using three $$N_f=2$$ N f = 2 twisted mass gauge ensembles with the pion mass $$300{-}365$$ 300 - 365 MeV and lattice spacing $$a=0...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2025-04-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-025-14192-z |
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