Hadron-in-fat-jet AI tagging to detect rare decays such as ${W}^{±}→{π}^{±}γ$

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We investigate a novel class of boosted-object signatures at the LHC, where a high-${p}_{\mathrm{T}}$ fat jet contains an identifiable hadron or quarkonium state originating from rare or semiexclusive decays. Unlike conventional boosted jet studies, which foc…