Giacomo Cacciapaglia, Gabriele Ferretti, Thomas Flacke, Hugo Serodio
Revealing timid pseudo-scalars with taus at the LHC


A light pseudo-scalar that is copiously produced at the LHC may still be allowed by present searches. While masses above 65 GeV are effectively covered by di-photon searches, the lower mass window can be tested by a new search for boosted di-tau resonances. We test this strategy on a set of composite Higgs models with top partial compositeness, where most models can be probed with an integrated luminosity below 300 fb−1.

LU TP 17-34