Chargino searches at LEP for complex MSSM parameters

Details Chargino searches at LEP for complex MSSM parameters Chargino searches at LEP for complex MSSM parameters

2000-12-04

arxiv.org/abs/hep-ph/0012031v2

Nucl.Phys.B647:190-214,2002

Physics

High Energy Physics

High Energy Physics - Phenomenology

27 pages, 16 figures, uses axodraw.sty

Scientific paper

10.1016/S0550-3213(02)00944-6

We reanalyze the results of the chargino searches at LEP (on the basis of the DELPHI 189 GeV data sample), including the possibility of complex MSSM parameters. We point out the possible differences between the complex- and real-parameter analysis. We check that the regions excluded by ``standard'' analyses remain generally robust against the introduction of complex parameters, with the exception of light sneutrino and low $\tan\beta$ scenario, where additional constraints like those given by the $Z^0$ width or electric dipole moment measurements are necessary.

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