Jet substructure as a new Higgs search channel at the LHC

A key aim of the Large Hadron Collider (LHC) is to discover the Higgs boson, or to prove its non-existence, and hence elucidate the mechanism of mass generation and electroweak symmetry breaking. Current electroweak fits, together with the LEP exclusion limit, favour a light Higgs boson, i.e. one around 120 GeV in mass [1]. This mass region is particularly challenging for the LHC experiments, and any SM Higgs-boson discovery is expected to rely on a combination of several search channels, including gluon fusion → H → γγ, vector boson fusion, and associated production with tt̄ pairs [2, 3]. Two significant channels that have generally been considered less promising are those of Higgs-boson production in association with a vector boson, pp → WH , ZH , followed by the dominant light Higgs boson decay, to two b-tagged jets. In this contribution we summarise the work of [4], which presented a way to recover the WH and ZH channels.