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arXiv · 0812.3712

Resonance--Continuum Interference in Light Higgs Boson Production at a Photon Collider

Lance J. Dixon·Yorgos Sofianatos
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Abstract

We study the effect of interference between the Standard Model Higgs boson resonance and the continuum background in the process gamma gamma -> H -> b b-bar at a photon collider. Taking into account virtual gluon exchange between the final-state quarks, we calculate the leading corrections to the height of the resonance for the case of a light (m_H < 160 GeV) Higgs boson. We find that the interference is destructive and around 0.1--0.2% of the peak height, depending on the mass of the Higgs and the scattering angle. This suppression is smaller by an order of magnitude than the anticipated experimental accuracy at a photon collider. However, the fractional suppression can be significantly larger if the Higgs coupling to b quarks is increased by physics beyond the Standard Model.

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Lance J. Dixon, Yorgos Sofianatos. 2009-01-07. Resonance--Continuum Interference in Light Higgs Boson Production at a Photon Collider. https://doi.org/10.1103/physrevd.79.033002

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