The exclusive production of a fully heavy tetraquark and a photon in electron-positron collision
Abstract
The exclusive production of fully heavy tetraquark (T(bbbb), T(cccc) and T(bcbc)) in association with a hard photon in electron-positron collisions is calculated within the framework of non-relativistic QCD. Both inner structures of molecule-like state and compact state with J=0,1,2 for the fully heavy tetraquark are discussed. We find that it is dismal to observe any fully heavy tetraquarks in either the compact configuration or the molecule-like configuration through such exclusive processes at either Belle II or future Z factories like CEPC and FCC-ee.
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