The gamma gamma to Z Z process and the search for virtual SUSY effects at a gamma gamma Collider

Abstract

We study the helicity amplitudes of the process gamma gamma to ZZ in the Standard Model at high energy. These amplitudes receive contributions from the W and charged quark and lepton loops, analogous to those encountered in the gamma gamma to gamma gamma, gamma Z cases studied before. But gamma gamma to ZZ also receives contributions from the Higgs s-channel poles involving the effective Higgs-gamma gamma vertex. At energies of about 300 GeV, the amplitudes in all three processes are mainly helicity-conserving and almost purely imaginary; which renders them a very useful tool in searching for New Physics. As an example, a SUSY case is studied, and the signatures due to the virtual effects induced by a chargino-, charged slepton- or a lightest stop-loop in gamma gamma to ZZ, are explored. These signatures, combined with the analogous ones in gamma gamma to gamma gamma and gamma gamma to gamma Z, should help identifying the nature of possible New Physics particles.

28 pages and 6 figures; version to appear in E.P.J.C e-mail: [email protected]

Cited by in corpus (22)

• The Anatomy of Electro-Weak Symmetry Breaking. I: The Higgs boson in the Standard Model
• Studying 750 GeV Di-photon Resonance at Photon-Photon Collider
• About helicity conservation in gauge boson scattering at high energy
• Study of the Higgs-boson decays into WW and ZZ at the Photon Collider
• A feasibility study of the measurement of Higgs pair creation at a Photon Linear Collider
• A FORTRAN code for $\gamma \gamma \to ZZ$ in SM and MSSM
• Determination of the Higgs-boson couplings and H-A mixing in the generalized SM-like Two Higgs Doublet Model
• Production and Decay of Di-photon Resonance at Future $e^{+}{e}^{-}$ Colliders
• Beam polarization effects on Z-boson pair production at electron-positron colliders: a full one-loop analysis
• Photon Collider for energies 1-2 TeV
• SANC: the process $\gamma \gamma \to ZZ$
• QCD Corrections to Electroweak Vector Boson Scattering at Small Scattering Angles
• Indirect Signatures of CP Violation in the Processes $\gamma \gamma \to \gamma \gamma$, $\gamma Z$, and $ZZ$
• Di-Higgs Decay of Stoponium at Future Photon-Photon Collider
• Amplitudes for $gg\to V{V}^{\prime }$ and their high energy SUSY constraints
• A new class of SUSY signatures in the processes $gg\to H{H}^{\prime },VH$
• Asymptotic Helicity Conservation in SUSY
• QCD Corrections to $\gamma \gamma \to ZZ$ at Small Scattering Angles
• Weak Scale Quantum Gravity Effects for $\gamma \gamma \to ZZ$ in the TeV region
• Signals for Low Scale Gravity in the Process $\gamma \gamma \to ZZ$
• The processes of gluon fusion producing chargino or neutralino pairs at high energies
• Feasibility study of measurement of Higgs pair creation in a gamma gamma collider