H and A Discrimination using Linear Polarization of Photons at the PLC
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First realistic estimate of the usefulness of the Photon Linear Collider with linearly polarized photons as analyzer of the CP-parity of Higgs bosons is presented. MSSM Higgs bosons H and A with 300 GeV mass, for the model parameters corresponding to the so called "LHC wedge" region, are considered. When switching from circular to linear photon polarization a significant increase in heavy quark production background, which is no longer suppressed by helicity conservation, and decrease of the Higgs boson production cross sections by a factor of two is expected. Nevertheless, after three years of Photon Linear Collider running heavy scalar and pseudoscalar Higgs bosons in MSSM can be distinguished at a 4.5 sigma level.
4pp. To appear in the proceedings of 2007 International Linear Collider Workshop (LCWS07 and ILC07), Hamburg,
4pp. To appear in the proceedings of 2007 International Linear Collider Workshop (LCWS07 and ILC07), Hamburg,