Multi-photon signatures at the Fermilab Tevatron

Fermiophobic Higgs bosons (h_f) exhibiting large branching ratios for decay to two photons can arise in models with two or more scalar doublets and/or triplets. In such models the conventional production mechanisms at hadron colliders, which rely on the h_fVV coupling (V=W,Z), may be rendered ineffective due to severe mixing angle suppression. In this scenario, double h_f production may proceed via the complementary mechanism qq’→H^±h_f with subsequent decay H^±→h_fW^*, leading to events with up to four photons. We perform a simulation of the detection prospects of h_f in the multi-photon (>3) channel at the Fermilab Tevatron and show that a sizeable region of the (m_H±,m_hf) parameter space can be probed during Run II.