We study chargino production e^+ e^- -> chi^+_1 chi^-_1 and the subsequent leptonic decay chi^-_1\to chi^0_1 e^- nu_e including the complete spin correlations between production and decay. We work out the advantages of polarizing the e^+ and e^- beams. We study in detail the polarized cross sections, the angular distribution and the forward--backward asymmetry of the decay electron. They can be used to determine the sneutrino mass m_{\tilde{\nu}_e}.
@article{arxiv.hep-ph/0004181,
title = {Beam Polarization and Spin Correlation Effects in Chargino Production and Decay},
author = {G. Moortgat-Pick and A. Bartl and H. Fraas and W. Majerotto},
journal= {arXiv preprint arXiv:hep-ph/0004181},
year = {2007}
}
Comments
14 pages, 17 postscript figures, latex using epsfig