Detection of heavy charged Higgs bosonsin production at future Linear Colliders
School of Physics & Astronomy, University of Southampton, SO171BJ, Highfield, Southampton, UK
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Heavy charged Higgs bosons () of a Type II 2-Higgs doublet model (2HDM) can be detected at future electron-positron Linear Colliders (LCs) even when their mass is larger than half the collider energy. The single Higgs mode (where j represents a jet and with ) contributes to extend the discovery reach of states into the mass region , where the well studied pair production channel is no longer available. With a technique that allows one to reconstruct the neutrino four-momentum in the decay , one can suppress the initially overwhelming main irreducible background due to (via a gluon splitting into pairs) to a negligible level. However, for currently foreseen luminosities, one can establish a statistically significant signal only over a rather limited mass region, of 20 GeV or so, beyond , for very large or very small values of and provided high b-tagging efficiency can be achieved.
© Springer-Verlag, 2004