Higgs boson analysis

Our group is actively involved in analysing the properties of the Higgs boson. 

With data from Run 2 of the LHC, we have worked on the following analyses:

• $t \bar t H$, $H\rightarrow \gamma, \gamma$ production of a Higgs boson with a top-quark pair, with the Higgs boson decaying into two photons.    (Dr Hasib Ahmed, Prof Phil Clark, Prof Victoria Martin, Dr Liza Mijovic, PhD students Tom Carter, Matthew Heath, Alan Taylor, Emily Takeva)
• $HH \rightarrow \gamma\gamma b \bar b$ :  di-Higgs boson production in the $\gamma\gamma b \bar b$ final state.  (Prof Victoria Martin, PhD student Alan Taylor)
• Higgs boson prospects for $t t \bar  H H$  and $W/Z \,H$ production. (Prof Victoria Martin, PhD student Alan Taylor)

With data from Run 1 of the LHC we looked at the following channels:

• $H \rightarrow Z Z^* \rightarrow 4 \ell$: We played a leading role in the measurements of the mass, signal strength and width in the “golden” four-lepton channel. (Prof Phil Clark, Prof Christos Leonidopoulos, Dr Ben Wynne, PhD students Chiara Debendetti, Francisca Garay, Karoline Selbach)
• $W/Z \,H$: Associated production of the Higgs boson with a $W$ or $Z$ boson with the Higgs boson decaying to $b \bar b$. ( Prof Phil Clark, Prof Victoria Martin, Dr Wahid Bhimji, Dr Andy Buckley, PhD students Tim Bristow, Brendan O'Brien, Manual Proissl and Ben Smart)
• $H \rightarrow WW \rightarrow \ell \nu \, \ell^\prime \nu^\prime$: We were key contributors to the analysis of the Higgs boson in the $WW$ decay channel in the fully leptonic mode, specializing in data-driven background estimation and performing the first differential cross sections in this channel. (Prof Victoria Martin, Dr Corrinne Mills, PhD student Paul Glaysher)

These activities are led by Prof Phil Clark and Prof Victoria Martin.