Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2001-07-13
Phys.Lett.B518:128-136,2001
Physics
High Energy Physics
High Energy Physics - Phenomenology
13 pages, including 3 figures
Scientific paper
10.1016/S0370-2693(01)01047-4
We discuss four-fermion contact-interaction searches in the processes e^+e^-\to\mu^+\mu^-, c{\bar c} and b{\bar b} at a future e^+e^- Linear Collider with c.m. energy \sqrt{s}=0.5 TeV and with both beams longitudinally polarized. Our analysis is based on the measurements of familiar polarized observables such as the total cross section and the forward-backward/left-right asymmetries, and accounts for the general set of contact interaction couplings as independent, non-zero, parameters thus avoiding simplifying, model-dependent, assumptions. We derive the corresponding model-independent constraints on the above-mentioned coupling constants, and evaluate the corresponding reach at the Linear Collider, emphasizing the role of beam polarization. We compare the results with a model-dependent procedure where only one coupling is varied at a time.
Babich A. A.
Osland Per
Pankov A. A.
Paver Nello
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