New physics in e+ e- -> Z gamma with polarized beams

Abstract

We present a complete description of angular distributions in the presence of new interactions for the process e+ e- -> Z gamma with polarized beams at future linear colliders, by considering the most general form-factors allowed by gauge invariance. We include the possibility of CP violation, and classify the couplings according to their CP properties. Chirality conserving and chirality violating couplings give rise to distinct dependence on beam polarization. We present a comprehensive discussion including both types of couplings and provide a detailed comparison of the effects due to each. We discuss some selected asymmetries which would enable isolating effects of the CP-violating form-factors. We also present sensitivities on the corresponding couplings achievable at a future linear collider with realistic polarization and luminosity.

18 pages latex, using JHEP style; version to appear in JHEP. Compared to v1, now has an extended discussion on nature of contact interactions; simplified notation, extended discussion on CP properties of couplings, improved discussion on numerical results, typos corrected in Appendix A, additional reference to PDG provided

References in corpus (13)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Transverse beam polarization and CP-violating triple-gauge-boson couplings in e+e- -> gamma Z
• Test of $CP$ Violating Neutral Gauge Boson Vertices in $e^{+}{e}^{-}\to \gamma Z$
• CP violation at a linear collider with transverse polarization
• Four-Fermi Effective Operators in Top-Quark Production and Decay
• The processes $e^{-}{e}^{+}\to \gamma \gamma ,Z\gamma ,ZZ$ in SM and MSSM
• Trilinear Neutral Gauge Boson Couplings
• Transverse beam polarization and CP violation in e+ e- -> gamma Z with contact interactions
• Single decay-lepton angular distributions in polarized e+e- --> t tbar and simple angular asymmetries as a measure of CP-violating top dipole couplings
• CP violating effects in the decay Z -> mu^+mu^-gamma induced by ZZgamma and Zgammagamma couplings
• New physics signatures at a Linear Collider: model-independent analysis from `conventional' polarized observables
• CP-Violation in the Production of Tau-Leptons at TESLA with Beam Polarization
• Possible Nonstandard Effects in Z+Gamma Events at LEP2

Cited by in corpus (13)

• Angular distributions as a probe of anomalous ZZH and gammaZH interactions at a linear collider with polarized beams
• On the choice of beam polarization in $e^{+}{e}^{-}\to ZZ/Z\gamma$ and anomalous triple gauge-boson couplings
• Use of transverse beam polarization to probe anomalous VVH interactions at a Linear Collider
• Probing CP-violating contact interactions in e+e- --> HZ with polarized beams
• New Physics in $e^{+}{e}^{-}\to Z\gamma$ at the ILC with polarized beams: Explorations beyond conventional anomalous triple gauge boson coupling
• Selectron production at an e-e- linear collider with transversely polarized beams
• Isolating CP-violating γZZ coupling in e+e- \to γZ with transverse beam polarizations
• Charged lepton distributions as a probe of contact e+e-HZ interactions at a linear collider with polarized beams
• Space-time structure of new physics with polarized beams at the linear collider
• Two-particle kinematic distributions from new physics at an electron-positron collider with polarized beams
• Top-spin analysis of new scalar and tensor interactions in e^+ e^- collisions with beam polarization
• Use of Transverse polarization to probe R-parity violating supersymmetry at ILC
• Probing space-time structure of new physics with polarized beams at the ILC