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Probing complex phase of the photon-photon-Higgs vertex at photon colliders

Eri Asakawa
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Abstract

We study the effects of heavy Higgs bosons on the top-pair production process at photon linear colliders. The interference patterns between the resonant Higgs-production amplitudes and the continuum QED amplitudes are examined. The patterns tell us not only the CP nature of the Higgs bosons but also the phase of the $γγ$--Higgs vertex which gives new information about the Higgs couplings to new charged particles.

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Eri Asakawa. 2004-02-27. Probing complex phase of the photon-photon-Higgs vertex at photon colliders. https://arxiv.org/abs/hep-ph/0402289

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