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Limits on the quartic couplings Zγγγ and ZZγγ from e+e colliders

A. Gutiérrez-Rodríguez1,*, C. G. Honorato2, J. Montaño2, and M. A. Pérez2,†

  • 1Facultad de Física, Universidad Autónoma de Zacatecas Apartado Postal C-580, 98060 Zacatecas, México
  • 2Departamento de Física, CINVESTAV. Apartado Postal 14-740, 07000, México D.F., México

  • *alexgu@fisica.uaz.edu.mx
  • mperez@fis.cinvestav.mx

Phys. Rev. D 89, 034003 – Published 3 February, 2014

DOI: https://doi.org/10.1103/PhysRevD.89.034003

Abstract

We obtain limits on the quartic neutral gauge bosons couplings Zγγγ and ZZγγ using LEP 2 data published by the L3 Collaboration on the reactions e+eγγγ, Zγγ. We also obtain 95% C.L. limits on these couplings at the future linear colliders’ energies. The LEP 2 data induce limits of order 105GeV4 for the Zγγγ couplings and of order 103GeV2 for the ZZγγ couplings, which are still above the respective standard model predictions. Future e+e linear colliders may improve these limits by one or two orders of magnitude.

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