1998/05/01 by A. A. Pankov, A.A Pankov, N. Paver +1
Physics and Astronomy · #Electron #Fermion #Helicity #Observable #Particle physics theoretical and experimental studies #Physics beyond the Standard Model #Polarization (electrochemistry) #Quantum Chromodynamics and Particle Interactions #Quantum and Classical Electrodynamics #hep-ph
paper · pdf · doi:10.1016/s0370-2693(98)00619-4
published as Phys.Lett.B432:159-166,1998 · 13 pages, LaTex
arxiv created 1998/05/01 · openalex publication_date 1998/07/01 · arxiv updated 2011/01/25 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Fermion compositeness, and other types of new physics that can be described by the exchange of very massive particles, can manifest themselves as the result of an effective four-fermion contact interaction. In the case of the processes e+e-→ μ+μ-,τ+τ-,bb and cc at future e+e- colliders with √(s)=0.5-1 TeV, we examine the sensitivity to four-fermion contact interactions of two new integrated observables, σ+ and σ-, conveniently defined for such kind of analysis. We find that, if longitudinal polarization of the electron beam were available, these observables would offer the opportunity to separate the helicity cross sections and, in this way, to derive model-independent bounds on the relevant parameters.