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IPPP-14-82
DCPT-14-164
arXiv:1409.8074
Phys.Lett. B743 (2015) 93-97

by: Englert, Christoph (Glasgow U.) et al.

Abstract:
Searches for multi-Higgs final states allow to constrain parameters of the SM (or extensions thereof) that directly relate to the mechanism of electroweak symmetry breaking. Multi-Higgs production cross sections, however, are small and the phenomenologically accessible final states are challenging to isolate in the busy multi-jet hadron collider environment of the LHC run 2 and HL-LHC. This makes the necessity to extend the list of potentially observable production mechanisms obvious. Most of the phenomenological analyses in the past have focused on gg→hh+jets ; in this paper we study pp→tt¯hh at the HL-LHC and find that this channel for h→bb¯ and semi-leptonic and hadronic top decays has the potential to provide an additional handle to constrain the Higgs trilinear coupling in a global fit at the end of the high luminosity phase.
Link: 
http://inspirehep.net/record/1319312
Publ date: 
Tuesday, September 30, 2014 - 05:27