Precision measurements of Higgs-chargino couplings in chargino pair production at a muon collider

H. Fraas, F. Franke, G. Moortgat-Pick, F. von der Pahlen, A. Wagner
2003 European Physical Journal C: Particles and Fields  
We study chargino pair production on the heavy Higgs resonances at a muon collider in the MSSM. At $\sqrt{s} \approx 350$ GeV cross sections up to 2 pb are reached depending on the supersymmetric scenario and the beam energy spread. The resonances of the scalar and pseudoscalar Higgs bosons may be separated for $\tan\beta <8$. Our aim is to determine the ratio of the chargino couplings to the heavy scalar and pseudoscalar Higgs boson independently of the specific chargino decay characteristics.
more » ... ay characteristics. The precision of the measurement depends on the energy resolution of the muon collider and on the error in the measurement of the cross sections of the non-Higgs channels including an irreducible standard model background. With a high energy resolution the systematic error can be reduced to the order of a few percent.
doi:10.1140/epjc/s2003-01249-6 fatcat:bfugvdqmsra2di4kysy4ndpqem