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

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

2005-05-09

arxiv.org/abs/hep-ex/0505014v2

Phys.Lett. B619 (2005) 43-49

Physics

High Energy Physics

High Energy Physics - Experiment

10 pages, 4 figures, version published in Phys. Lett. B

Scientific paper

10.1016/j.physletb.2005.05.076

We present a new method to measure the transverse spin correlation in the $H\to\tau^+\tau^-$ 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 $\tau\to\pi^\nu$ 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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