Triple Higgs boson self-coupling in a gamma gamma collider

A. GUTIERREZ-RODRIGUEZ; JAVIER PERESSUTTI; OSCAR ALFREDO SAMPAYO

Congreso; 14th Mexican School of Particles and Fields; 2011

We analyzed the double production and the triple self-coupling of the standard model Higgs boson at future ¦Ã¦Ã collider energies, with the reactions ¦Ã¦Ã ¡ú tHH. We evaluated the total cross section for tHH and calculated the total number of events considering the complete set of Feynman diagrams at tree-level and for different values of the triple coupling ¦Ê¦ËHHH. The numerical computation was done for the energy which is expected to be available at a possible Future Linear ¦Ã¦Ã Collider with a center-of-mass energy 500¨C3000 GeV and luminosities of 1000 and 5000 fb−1. We found that the number of events for the process ¦Ã¦Ã ¡ú tHH taking into account the decay products of both t and H, is enough to obtain relevant information about the triple Higgs boson self-coupling.