Associated production of H-+/- and W--/+ in high-energy e(+)e(-) collisions in the minimal supersymmetric standard model

作者：Logan HE^*; Su S

来源：Physical Review D – Particles and Fields, 2002, 66(3): 035001.

DOI：10.1103/PhysRevD.66.035001

We study the associated production of the charged Higgs boson and W+/- gauge boson in high energy e(+)e(-) collisions in the minimal supersymmetric standard model (MSSM). This associated production, which first arises at the one loop level, offers the possibility of producing the charged Higgs boson at the e(+)e(-) collider with a mass more than half the center-of-mass energy, when the charged Higgs pair production is kinematically forbidden. We present analytic and numerical results for the cross section for e(+)e(-)-->W+H- in the full MSSM, taking into account the previously uncalculated contributions from supersymmetric (SUSY) particles. We find that the contributions of the SUSY particles enhance the cross section over most of SUSY parameter space, especially when the SUSY particles are light, similar to200 GeV. With favorable SUSY parameters, at small tan beta, this process can yield more than ten W+/-H-/+ events for m(H)(+/-)less than or similar to350 GeV in 500 fb(-1) at a 500 GeV e(+)e(-) collider, or m(H)(+/-)less than or similar to600 GeV in 1000 fb(-1) at a 1000 GeV collider. 80% left-handed polarization of the e(-) beam improves these reaches to m(H)(+/-)less than or similar to375 GeV and m(H)(+/-)less than or similar to670 GeV, respectively.

• 出版日期2002-8-1