Model-independent description of new physics effects in e+e--->tt¯
Abstract
We study the potential of a future e+e- collider for the search of anomalous γtt¯ and Ztt¯ couplings, assuming that CP invariance holds. This is done in a model-independent way, considering that all six possible couplings do appear. Two experimental situations are envisaged; with and without e+/- beam polarization. Observability limits in the form of domains in the six-dimensional parameter space are established. Illustrations for specific constrained models are also presented and implications for new physics searches are discussed.
- Publication:
-
Physical Review D
- Pub Date:
- May 1997
- DOI:
- 10.1103/PhysRevD.55.5786
- arXiv:
- arXiv:hep-ph/9612335
- Bibcode:
- 1997PhRvD..55.5786G
- Keywords:
-
- 14.65.Ha;
- 12.15.Ji;
- 14.70.Bh;
- 14.70.Hp;
- Top quarks;
- Applications of electroweak models to specific processes;
- Photons;
- Z bosons;
- High Energy Physics - Phenomenology
- E-Print:
- 26 pages and 5 figures. e-mail: renard@lpmsun2.lpm.univ-montp2.fr