Transverse beam polarization and CP-violating triple-gauge-boson couplings in e+e- -> gamma Z

Abstract

We show that an anomalous CP-violating gamma-gamma-Z vertex gives rise to a novel asymmetry with transversely polarized electron and positron beams in the process e+e- -> gamma Z. This asymmetry, which is odd under naive time reversal, is proportional to the real part of the gamma-gamma-Z CP-violating coupling. This is in contrast to the simple forward-backward asymmetry of the gamma (or Z) with unpolarized or longitudinally polarized beams studied earlier, which is even under naive time reversal, and is proportional to the imaginary part. We estimate the sensitivity of future experiments to the determination of CP-odd gamma-gamma-Z and gamma-Z-Z couplings using these asymmetries and transversely polarized beams.

arXiv comment13 pages, latex, 7 figures included as postscript

References in corpus (10)

• TESLA Technical Design Report Part III: Physics at an e+e- Linear Collider
• Analysis of the Neutralino System in Supersymmetric Theories
• Test of $CP$ Violating Neutral Gauge Boson Vertices in $e^{+}{e}^{-}\to \gamma Z$
• Chargino Pair Production at $e^{+}{e}^{-}$ Colliders with Polarized Beams
• Transverse Polarization Signatures of Extra Dimensions at Linear Colliders
• CP violation at a linear collider with transverse polarization
• Probing triple gauge couplings with transverse beam polarisation in e+e- -> W+W-
• More Transverse Polarization Signatures of Extra Dimensions at Linear Colliders
• CP violation at colliders
• Forward-backward asymmetry in e+e- -> nu nubar Z from anomalous CP-odd WWZ couplings

Cited by in corpus (30)

• The role of polarized positrons and electrons in revealing fundamental interactions at the Linear Collider
• On polarization parameters of spin-$1$ particles and anomalous couplings in $e^{+}{e}^{-}\to ZZ/Z\gamma$
• Anomalous triple gauge boson couplings in $ZZ$ production at the LHC and the role of $Z$ boson polarizations
• 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
• CP-odd observables in neutralino production with transverse e+ and e- beam polarization
• Transverse beam polarization and CP violation in e+ e- -> gamma Z with contact interactions
• 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
• Disentangling the Unparticles with polarized beams at e+e- colliders
• Probing the anomalous triple gauge boson couplings in $e^{+}{e}^{-}\to W^{+}{W}^{-}$ using $W$ polarizations with polarized beams
• CP violating effects in the decay Z -> mu^+mu^-gamma induced by ZZgamma and Zgammagamma couplings
• Transverse beam polarization and limits on leptoquark couplings in e+e- --> t tbar
• New physics in e+ e- -> Z gamma with polarized beams
• 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
• Probing CP-violation at colliders through interference effects in diboson production and decay
• 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
• The three channels of the process f_1 bar-f_1 H A --> 0 in the SANC framework
• Summary of the Activities of the Working Group I on High Energy and Collider Physics
• Comparison of electric dipole moments and the Large Hadron Collider for probing CP violation in triple boson vertices
• 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
• Electroweak radiative corrections to the three channels of the process f_1 bar-f_1 ZA --> 0
• Distinguishing nonstandard scalar and fermionic charged particles at future $e^{+}{e}^{-}$ collider
• Vector currents of integer-spin Majorana particles
• Probing space-time structure of new physics with polarized beams at the ILC