Symmetries and similarities for spin orientation parameters in e^+ e^- -> ZH, Z\gamma, ZZ at SM thresholds
High Energy Physics - Phenomenology
2011-03-28 v2
Abstract
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.
Cite
@article{arxiv.1008.0917,
title = {Symmetries and similarities for spin orientation parameters in e^+ e^- -> ZH, Z\gamma, ZZ at SM thresholds},
author = {S. Groote and H. Liivat and I. Ots},
journal= {arXiv preprint arXiv:1008.0917},
year = {2011}
}
Comments
16 pages, 3 figures, published version