Decay-lepton correlations as probes of anomalous ZZH and gammaZH interactions in e+e- --> ZH with polarized beams

Abstract

We examine the contributions of various couplings in general ZZH and gammaZH interactions arising from new physics to the Higgs production process e+e- --> HZ, followed by the decay of the Z into a charged-lepton pair. We take into account possible longitudinal or transverse beam polarization likely to be available at a linear collider. We show how expectation values of certain simple observables in suitable combinations with appropriate longitudinal beam polarizations can be used to disentangle various couplings from one another. Longitudinal polarization can also improve the sensitivity for measurement of several couplings. A striking result is that using transverse polarization, one of the gammaZH couplings, not otherwise accessible, can be determined independently of all other couplings.

arXiv comment17 pages, latex

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Cited by in corpus (15)

• Model-independent analysis of Higgs spin and CP properties in the process $e^{+}{e}^{-}\to t\bar{t}\Phi$
• On the choice of beam polarization in $e^{+}{e}^{-}\to ZZ/Z\gamma$ and anomalous triple gauge-boson couplings
• Probing $HZ\gamma$ and $H\gamma \gamma$ Anomalous Couplings in the Process of $e^{+}{e}^{-}\to H\gamma$
• Study of anomalous gauge-Higgs couplings using $Z$ boson polarization at LHC
• Probing anomalous gauge-Higgs couplings using $Z$ boson polarization at $e^{+}{e}^{-}$ colliders
• Probing Anomalous HZZ Couplings at the LHeC
• Measuring Higgs self couplings in the presence of VVH and VVHH at the ILC
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• Influence of anomalous VVH and VVHH on determination of Higgs self couplings at ILC
• Polarized $Z$ cross sections in Higgsstrahlung for the determination of anomalous $ZZH$ couplings
• Effective fermion-Higgs interactions at an $e^{+}{e}^{-}$ collider with polarized beams
• Optimal estimation of Higgs-Gauge Boson couplings at the future $e^{+}{e}^{-}$ colliders
• Probing CP-violating Higgs-Gauge couplings with Higgsstrahlung at $e^{-}{e}^{+}$ collider