Studying trilinear gauge couplings at LEP2 using optimal observables

Details Studying trilinear gauge couplings at LEP2 using optimal observables Studying trilinear gauge couplings at LEP2 using optimal observables

1996-05-14

arxiv.org/abs/hep-ph/9605303v2

Phys.Lett. B386 (1996) 442-450

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, latex, minor typos corrected

Scientific paper

10.1016/0370-2693(96)00953-7

We study the sensitivity of the processes `e+ e- -> lepton (l) neutrino (v) quark (u) antiquark (d)' at LEP2 energies on the non-standard trilinear gauge couplings (TGC), using the optimal observables method. All relevant leading logarithmic corrections to the tree-order cross section, as well as experimental resolution effects have been studied. Taking into account correlations among the different TGC parameters we show that the limits on the TGC can reach the level of 0.15~(1sd) at 161 GeV with 100 pb$^{-1}$, a challenge for the first LEP2 phase. At higher energies this can be improved drastically, reaching the level of 0.02~(1sd).

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