Triple Higgs boson production in a γγ -collider at the future linear collider

Özet

In this study, triple Higgs boson production channels in a γγ -collider are investigated in the context ofthe two-Higgs-doublet model (2HDM). This model has three neutral Higgs bosons (h0/H0/A0) and two charged Higgsbosons (H± ). Between all the possible combinations of the triple Higgs bosons in the final state, only the following twoscattering processes are probable at tree-level: γγ → H+H−h0and γγ → H+H−H0. These two processes are importantto determine the triple Higgs self-couplings gH+H−h0 and gH+H−H0 in the 2HDM. The calculation is carried out fortwo scenarios, which are inspired by recent experimental and theoretical results. The cross-section of these processes iscalculated and a comparison is made for these scenarios. The total convoluted cross-section with photon luminosity inan e+e− -collider is presented as a function of the center of mass energy.