CP violating effects in the decay Z -> mu^+mu^-gamma induced by ZZgamma and Zgammagamma couplings

Abstract

We analyze possible CP-violating effects induced in the $Z$ decay with hard photon radiation by $\gamma ZZ$ and $\gamma \gamma Z$ anomalous vertices. We estimate the sensibility of future linear collider experiments on these couplings coming from CP-odd asymmetries associated to angular correlations of the three particle final state in $e^{+}{e}^{-}\to Z\to {\mu }^{+}{\mu }^{-}\gamma$. We find that a linear collider with an integrated luminosity of 500 $f{b}^{-1}$ and $\sqrt{s}=0.05$ TeV can place the bound $|h_1^{\gamma ,Z}|<0.92$ at the 90% confidence level for these couplings.

Added references, 2 graphics 5 pages, LaTeX; typos added, 4 graphics removed

References in corpus (6)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• New physics effects in rare Z decays
• Transverse beam polarization and CP-violating triple-gauge-boson couplings in e+e- -> gamma Z
• Study of the e^+e^- --> Z gamma Process at LEP and Limits on Triple Neutral-Gauge-Boson Couplings
• $ZZ\gamma$ and $Z\gamma \gamma$ couplings at linear $e^{+}{e}^{-}$ collider energies with the effects of Z polarization and initial state radiation
• $ZZ\gamma$ and $Z\gamma \gamma$ couplings in $\gamma e$ collision with polarized beams

Cited by in corpus (12)

• Limits on the Electromagnetic and Weak Dipole Moments of the Tau-Lepton in E_6 Superstring Models
• Bounding the electromagnetic and weak dipole moments of the tau-lepton in a simplest little Higgs model
• Bounding the magnetic and electric dipole moments of tau nu from the process e+e- --> nu bar nu gamma in E6 Superstring Models
• New physics in e+ e- -> Z gamma with polarized beams
• Isolating CP-violating γZZ coupling in e+e- \to γZ with transverse beam polarizations
• Probing the ZZgamma and Zgammagamma Couplings Through the Process e+e- --> nu anti-nu gamma
• Bounds on the dipole moments of the tau-neutrino via the process $e^{+}{e}^{-}\to \nu \bar{\nu }\gamma$ in a 331 model
• The three channels of the process f_1 bar-f_1 H A --> 0 in the SANC framework
• CP-odd contributions to the $Z{Z}^{\ast }\gamma$, $ZZ{\gamma }^{\ast }$, and $ZZ{Z}^{\ast }$ vertices induced by nondiagonal charged scalar boson couplings
• Bounds on the anomalous $HZ\gamma$ vertex arising from the process $e^{+}{e}^{-}\to {\tau }^{+}{\tau }^{-}\gamma$
• Electroweak radiative corrections to the three channels of the process f_1 bar-f_1 ZA --> 0
• Improved analysis of rare $Z$-boson decays into a heavy vector quarkonium plus lepton pair