Limits on the quartic couplingsZγγγandZZγγfrome+

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 + e − → γγγ, 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 10 −5 GeV −4 for the Zγγγ couplings and of order 10 −3 GeV −2 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.

Improved bounds on the dipole moments of the tau neutrino from high-energyγ*e−andγGutiérrez‐Rodríguez1, Köksal2, Billur3 2015Phys. Rev. DSelf Cite18370View full textAdd to dashboardCite

“…Experimental limits on the magnetic moment of the tau-neutrino are shown in Table I. Others limits on the magnetic moment of the µ ντ are reported in the literature [12,[23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42].…”

Studies on the anomalous magnetic and electric dipole moments of the tau-neutrino in pp collisions at the LHC

“…Limits on the dipole moments of the tau-neutrino have been reported by different experiments at Borexino [16], E872 (DONUT) [17], CERN-WA-066 [18], and at LEP [19], these are summarized in Table I. Another limits on the MM and EDM of the tau-neutrino in different context are reported in the literature [8,9,[20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39]. Motivated for the physical program of the ATLAS collaboration with regard to the study on the dipole moments of the neutrino, in this paper we explore the possibility of probing the dipole moments of the tau-neutrino through the process pp → (γ, Z) → ν τντ γ + X for √ s = 8, 13, 14, 33 T eV .…”

Probing the electromagnetic dipole moments of the tau-neutrino in theU(1)B−Lmodel at the ILC and CLIC energies

“…In the Lagrangian of the SU(3) C × SU(2) L × U(1) Y × U(1) B−L model, the terms for the interactions between neutral gauge bosons Z, Z ′ and a pair of fermions of the SM can be written in the form [33,48,49,[97][98][99]…”