Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1999-04-08
JHEP 9908 (1999) 011
Physics
High Energy Physics
High Energy Physics - Phenomenology
63 pages, 16 figures
Scientific paper
10.1088/1126-6708/1999/08/011
The procedures for studying a single narrow s-channel resonance or nearly degenerate resonances at a lepton collider, especially a muon collider, are discussed. In particular, we examine four methods for determining the parameters of a narrow s-channel resonance: scanning the resonance, measuring the convoluted cross section, measuring the Breit-Wigner area, and sitting on the resonance while varying the beam energy resolution. This latter procedure is new and appears to be potentially very powerful. Our focus is on computing the errors in resonance parameters resulting from uncertainty in the beam energy spread. Means for minimizing these errors are discussed. The discussion is applied to the examples of a light SM-Higgs, of the lightest pseudogoldstone boson of strong electroweak breaking, and of the two spin-1 resonances of the Degenerate BESS model (assuming that the beam energy spread is less than their mass splitting). We also examine the most effective procedures for nearly degenerate resonances, and apply these to the case of Degenerate BESS resonances with mass splitting of order the beam energy spread.
Casalbuoni Roberto
Curtis Stefania de
Deandrea Aldo
Dominici Daniele
Gatto Raoul
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