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

Abstract

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

arXiv comment5 pages, 2 figures, to appear in Physical Review D Brief Reports

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Cited by in corpus (4)

• New physics effects in rare Z decays
• Limits on the quartic couplings $Z\gamma \gamma \gamma$ and $ZZ\gamma \gamma$ from $e^{+}{e}^{-}$ colliders
• Static quantities of a neutral bilepton in the 331 model with right-handed neutrinos
• Decays $Z\to \gamma \gamma$ and $Z\to gg$ in the Standard Model Extension