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CP violation in a light Higgs boson decay from tau-spin correlations at a linear collider

Andre Rouge
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Abstract

We present a new method to measure the transverse spin correlation in the $H\toτ^+τ^-$ decay. The method has been devised to be insensitive to the beamstrahlung which affects the definition of the beam energy at a linear collider. In the case of two $τ\toπ^ν$ decays, using the anticipated detector performance of the TESLA project, we get a promising estimation of the error expected on the measurement of a CP violating phase.

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Andre Rouge. 2005-06-29. CP violation in a light Higgs boson decay from tau-spin correlations at a linear collider. https://doi.org/10.1016/j.physletb.2005.05.076

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