Once more about the Kbar K molecule approach to the light scalars

N.N. Achasov , A.V. Kiselev

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classification ✦ hep-ph hep-exnucl-th

keywords gammamoleculestatesapproachciteclaimingcompactdecays

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We show that the recent paper \cite{kalash}, claiming that the radiative decays \phi\to a_0(980)\gamma and \phi\to f_0(980)\gamma should be of the same order of magnitude regardless of whether the a_0(980) and f_0(980) are compact four-quark states or extended K\bar K molecule states, is misleading.

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Radiative decays of hadronic molecules: From confusion to inspiration
hep-ph 2026-03 unverdicted novelty 3.0

Radiative decays of hadronic molecules require careful treatment of scale hierarchies to resolve interpretive confusions, as demonstrated by reviewing decay types and instructive examples.