Probing Wrong-Sign hbb Couplings in $$h \rightarrow \Upsilon \gamma $$

In Standard model (SM), the \(h \rightarrow \Upsilon \gamma \) decay has a very small rate. Models with a hbb coupling of opposite sign compared to the SM, can enhance this decay greatly. Current LHC results allow this ’wrong-sign’ scenario in certain two Higgs doublet models. We show how \(h \rightarrow \Upsilon \gamma \) can probe the wrong-sign solution.