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Role of transverse polarization in constraining new physics

Saurabh D. Rindani
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Abstract

Transverse polarization (TP) can be used to study interference of (S,P) or T type couplings from new physics with the SM contribution. In e+e- -> t tbar, a CP-odd azimuthal asymmetry can constrain the scale Lambda of new (S,P) or T contact interactions to be higher than about 7 TeV for total c.m. energy of 500 GeV, integrated luminosity of 500 inverse fb, and assuming 80% e- and 60% e+ polarizations in opposite directions. In e+e- -> gamma Z without chirality violation, but with CP-violating anomalous gamma-gamma-Z couplings, an azimuthal asymmetry can probe the anomalous coupling down to about 10^{-2}.

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Saurabh D. Rindani. 2004-09-02. Role of transverse polarization in constraining new physics. https://arxiv.org/abs/hep-ph/0409014

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