Computes two-photon couplings of scalar and tensor fully-charmed tetraquarks via NRQCD from recent four-body wave functions and finds resonant terms dominate J/ψJ/ψ but not diphoton production in UPCs, disagreeing with naive vector dominance.
Only a spin-0 tetraquark is considered, and values of Γ(X(6900)→γγ)∼ 45÷67 keV, about two orders of magnitude larger than our results, are obtained from a fit to LbL data
1 Pith paper cite this work. Polarity classification is still indexing.
1
Pith paper citing it
fields
hep-ph 1years
2026 1verdicts
UNVERDICTED 1representative citing papers
citing papers explorer
No citing papers match the current filters.