Neutral Higgs Boson Pair-Production and Trilinear Self-Couplings in the MSSM at ILC and CLIC Energies

GUTIERREZ-RODRIGUEZ, ALEJANDRO; HERNANDEZ-RUIZ, M.A.; SAMPAYO, OSCAR ALFREDO

INTERNATIONAL JOURNAL OF MODERN PHYSICS A

WORLD SCIENTIFIC PUBL CO PTE LTD

Lugar: Singapour; Año: 2009 vol. 24 p. 5299 - 5318

0217-751X

We study pair-production as well as the triple self-couplings of the neutral Higgs bosons ofthe Minimal Supersymmetric Standard Model (MSSM) at the Future International Linear e+e−Collider (ILC) and Compact Linear Collider (CLIC). The analysis is based on the reactions e+e− !b¯bhihi, t¯thihi with hi = h,H,A. We evaluate the total cross-section for both b¯bhihi, t¯thihi andcalculate the total number of events considering the complete set of Feynman diagrams at treelevel.We vary the triple couplings hhh, Hhh, hAA, HAA, hHH and HHH within therange  = −1 and +2. The numerical computation is done for the energies expected at the ILCwith a center-of-mass energy 500, 1000, 1600 GeV and a luminosity 1000 fb−1. The channelse+e− ! b¯bhihi and e+e− ! t¯thihi are also discussed to a center-of-mass energy of 3 TeV andluminosities of 1000 fb−1 and 5000 fb−1.