Speaker
Daniel Lawrence Briglin
(University of Birmingham (GB))
Description
The HH->bbγγ is a promising channel to measure the trilinear Higgs self-coupling, benefitting from the narrow mass peak of the H->γγ decay and the large branching fraction of the H->bb decay. The prospects for observing di-Higgs production through the bbγγ channel in the HL-LHC are presented. This study assumes an integrated luminosity of 3000 fb-1 and mean pileup rates < μ > of 200. An expected significance of 1.05 is obtained in HH->bbγγ observation which translates into the Higgs boson self-coupling being constrained to -0.8 < 𝜆/𝜆SM < 7.7 at 95% confidence level.
