Sfermion Precision Measurements at a Linear Collider
Abstract
At future e+- e- linear colliders, the event rates and clean signals of scalar fermion production - in particular for the scalar leptons - allow very precise measurements of their masses and couplings and the determination of their quantum numbers. Various methods are proposed for extracting these parameters from the data at the sfermion thresholds and in the continuum. At the same time, NLO radiative corrections and non-zero width effects have been calculated in order to match the experimental accuracy. The substantial mixing expected for the third generation sfermions opens up additional opportunities. Techniques are presented for determining potential CP-violating phases and for extracting tan(beta) from the stau sector, in particular at high values. The consequences of possible large mass differences in the stop and sbottom system are explored in dedicated analyses.
Keywords
Cite
@article{arxiv.hep-ph/0211108,
title = {Sfermion Precision Measurements at a Linear Collider},
author = {A. Freitas and J. Kalinowski and B. Ananthanarayan and A. Bartl and G. A. Blair and C. Blochinger and E. Boos and A. Brandenburg and A. Datta and A. Djouadi and H. Fraas and J. Guasch and S. Hesselbach and K. Hidaka and W. Hollik and T. Kernreiter and M. Maniatis and A. v. Manteuffel and H. U. Martyn and D. J. Miller and G. Moortgat-Pick and M. Muhlleitner and U. Nauenberg and H. Nowak and W. Porod and J. Sola and A. Sopczak and A. Stahl and M. M. Weber and P. M. Zerwas},
journal= {arXiv preprint arXiv:hep-ph/0211108},
year = {2009}
}
Comments
Expanded version of contributions to the proceedings of ICHEP'02 (Amsterdam) and LCWS 2002 (Jeju Island)