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After the discovery of the 125 GeV scalar boson with gauge properties similarto the Standard Model Higgs, the search for beyond the SM interactions willfocus on studying the discovered particles' coupling properties more preciselyand shedding light on the relation of fermion masses with the electroweakvacuum. The large mass of the top quark and the SM-predicted order one topYukawa coupling is a natural candidate for BSM physics, though experimentallychallenging to constrain. In this paper, we argue that investigating angularcorrelations in $pp\to tHj$ production provides an excellent handle toconstrain the top Yukawa coupling $y_t$ via direct measurements, even when wefocus on rare exclusive final states. We perform a hadron-level analysis andshow that we may expect to constrain $y_t\gtrsim 0.5\, y_t^{\text{SM}}$ at95%-99% confidence level at the high luminosity LHC using semi-leptonic topdecays and $H\to \gamma \gamma$ alone, by employing a two-channel measurementapproach.

Bounding the top Yukawa with Higgs-associated single-top production