Symmetries and similarities for spin orientation parameters in e^+ e^- -> ZH, Zγ, ZZ at SM thresholds

Details Symmetries and similarities for spin orientation parameters in e^+ e^- -> ZH, Zγ, ZZ at SM thresholds Symmetries and similarities for spin orientation parameters in e^+ e^- -> ZH, Zγ, ZZ at SM thresholds

2010-08-05

arxiv.org/abs/1008.0917v2

Nucl.Phys.B843:213-222,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, 3 figures, published version

Scientific paper

10.1016/j.nuclphysb.2010.10.002

We consider the spin orentation of the final Z bosons for the processes in the Standard Model. We demonstrate that at the threshold energies of these processes the analytical expressions for the Z boson polarization vectors and alignment tensors coincide (e^+ e^- -> ZH, Z\gamma) or are very similar (e^+ e^- -> ZZ). In addition, we present interesting symmetry properties for the spin orientation parameters.

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