Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1996-07-14
Z.Phys. C75 (1997) 341-348
Physics
High Energy Physics
High Energy Physics - Phenomenology
15 pages, LaTex, 11 figures, 3 tables; table 3 changed. Version to appear in Zeitschrift f. Physik C
Scientific paper
Expectations for constraints on extra Z bosons are derived for LEP 2 and future linear e+e- colliders. For typical GUTs, a Z' with M_{Z'} \le 3 to 6 \sqrt{s} may cause observable effects. The Z' discovery limits are dominated by statistical errors. However, if a Z' signal is observed, the discrimination between different models becomes much worse if systematic errors are taken into account. Discrimination between models is possible for M_{Z'} < 3 \sqrt{s}. A determination of Z' f \bar f couplings independently of models becomes attractive with future colliders. Anticipated bounds are determined.
Leike Arnd
Riemann Sabine
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