NRQCD calculation finds ~1 MeV widths for T4c to gamma J/psi, tens of eV for T4b, and preferential c cbar annihilation in mixed bc states.
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Radiative decay of fully-heavy tetraquark into quarkonium
NRQCD calculation finds ~1 MeV widths for T4c to gamma J/psi, tens of eV for T4b, and preferential c cbar annihilation in mixed bc states.