Determining the relative size of the CP-even and CP-odd Higgs boson couplings to a fermion at the LHC

摘要

We demonstrate that the relative size of the CP-even and CP-odd couplings of a Higgs boson to rr can be determined at the LHC at a level that is very useful in discriminating between models, provided that a Higgs signal can be observed at a reasonable S/root B level in the trh (with h --> gamma gamma or b (b) over bar) channels. In particular, the CP-even nature of a SM-like Higgs boson's coupling to ti can be confirmed with very substantial statistical significance using the t (t) over bar h (h --> gamma gamma) production/decay mode. (C) 1998 Elsevier Science B.V. All rights reserved. [References: 10]