Triple Higgs coupling as a probe of the twin-peak scenario
Amine Ahriche (Fakultät für Physik, Universität Bielefeld, Bielefeld, Germany, The Abdus Salam International Centre for Theoretical Physics, Trieste, Italy, Department of Physics, University of Jijel, Jijel, Algeria)
; Abdesslam Arhrib (Université AbdelMalek Essaadi, Faculté des Sciences et Techniques, Tangier, Morocco); Salah Nasri (Physics Department, UAE University, Al Ain, United Arab Emirates)
In this letter, we investigate the case of a twin peak around the observed 125 GeV scalar resonance, using di-Higgs production processes at both LHC and Linear Colliders. We have shown that both at LHC and Linear Collider the triple Higgs couplings play an important role to identify this scenario; and also that this scenario can be distinguishable from any Standard Model extension by extra massive particles which might modify the triple Higgs coupling. We also introduce a criterion that can be used to rule out the twin peak scenario.