Rare decay Z --> neutrino antineutrino photon photon via quartic gauge boson couplings

Details Rare decay Z --> neutrino antineutrino photon photon via quartic gauge boson couplings Rare decay Z --> neutrino antineutrino photon photon via quartic gauge boson couplings

2002-11-10

arxiv.org/abs/hep-ph/0211135v1

Phys.Rev. D67 (2003) 017702

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 2 figures, to appear in Physical Review D Brief Reports

Scientific paper

10.1103/PhysRevD.67.017702

We present a detailed calculation of the rare decay Z --> neutrino antineutrino photon photon via the quartic neutral gauge boson coupling Z-Z-photon-photon in the framework of the effective Lagrangian approach. The current experimental bound on this decay mode is then used to constrain the coefficients of this coupling. It is found that the bounds obtained in this way, of the order of $10^{-1}$, are weaker than the ones obtained from the analysis of triple-boson production at LEP-2

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