PROBING ANOMALOUS TRIPLE BOSON VERTICES AT FUTURE E(-) COLLIDERS()E()

Citation
P. Kalyniak et al., PROBING ANOMALOUS TRIPLE BOSON VERTICES AT FUTURE E(-) COLLIDERS()E(), Physical review. D. Particles and fields, 52(7), 1995, pp. 3826-3835
Citations number
41
Categorie Soggetti
Physics, Particles & Fields
ISSN journal
05562821
Volume
52
Issue
7
Year of publication
1995
Pages
3826 - 3835
Database
ISI
SICI code
0556-2821(1995)52:7<3826:PATBVA>2.0.ZU;2-J
Abstract
We explore the detection potential of the four lepton production proce sses e(+)e(-) --> l(+)nu l(--)nu for anomalous contributions to the tr iple boson vertices at proposed future high energy colliders with cent er-of-mass energies of 500 GeV and 1 TeV. The predicted bounds are of the order of a few percent for the GP-even couplings kappa(V) (V = gam ma, Z) at the higher energy; we show that these limits can be improved by as much as a factor of 2 through suitable phase space cuts. A pola rized beam facility, with its ability to access helicity information, could provide constraints on the vertices significantly tighter than t hose achievable from an analysis of total cross section alone. The bou nds on the CP-odd coupling lambda(V) approach the indirect bounds from neutron electric dipole measurements while those on kappa(V) are much loose;. The asymmetries in experimental observables produced by such an explicitly CP-violating triple vertex contribution are seen to be b elow the expected level of statistical precision of approximately 1.5% ; asymmetries in the individual contributing helicity amplitudes might however be detectable.