A Direct Reconstruction of the Gaugino Parameters with Phases

Details A Direct Reconstruction of the Gaugino Parameters with Phases A Direct Reconstruction of the Gaugino Parameters with Phases

1999-10-07

arxiv.org/abs/hep-ph/9910267v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, using sprocl.sty (included), 4 PS figures. Contribution to the proceedings of the International Workshop on Linear Co

Scientific paper

A simple algebraic algorithm is described to recover the (complex valued) gaugino/Higgsino basic parameters $\mu = |\mu| e^{i \phi_\mu}$, $M_1 = |M_1| e^{i \phi_{M_1}}$, $M_2 = |M_2|$, directly in terms of (a minimal set of) neutralino and chargino masses, accurately measurable at future linear collider energies. An ambiguity in the $M_1$ reconstruction can be resolved by measuring the corresponding $e^+e^- \to \chi^0_1 \chi^0_2$ cross section. This approach should simplify the determination of allowed ranges of the gaugino parameters, in particular if only a partial set of gaugino masses were measured.

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