https://doi.org/10.1140/epjc/s10052-013-2446-2
Regular Article - Theoretical Physics
One-loop effects on MSSM parameter determination via chargino production at the LC
1
II. Institut für Theoretische Physik, University of Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany
2
Faculty of Physics, University of Warsaw, 00681, Warsaw, Poland
3
DESY, Deutsches Elektronen-Synchrotron, Notkestr. 85, 22607, Hamburg, Germany
4
Instituto de Física Teórica, IFT-UAM/CSIC, 28049, Madrid, Spain
* e-mail: aoife.bharucha@desy.de
Received:
21
March
2013
Published online:
8
June
2013
At a future linear collider very precise measurements, typically with errors of <1 %, are expected to be achievable. Such an accuracy gives sensitivity to the quantum corrections, which therefore must be incorporated in theoretical calculations in order to determine the underlying new physics parameters from prospective linear collider measurements. In the context of the chargino–neutralino sector of the minimal supersymmetric standard model, this involves fitting one-loop predictions to prospective measurements of the cross sections, forward–backward asymmetries and of the accessible chargino and neutralino masses. Taking recent results from LHC SUSY and Higgs searches into account we consider three phenomenological scenarios, each with characteristic features. Our analysis shows how an accurate determination of the desired parameters is possible, providing in addition access to the stop masses and mixing angle.
© Springer-Verlag Berlin Heidelberg and Società Italiana di Fisica, 2013
