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Identifying the Higgs Spin and Parity in Decays to Z Pairs

S. Y. Choi·D. J. Miller·M. M. Muhlleitner·P. M. Zerwas
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Abstract

Higgs decays to Z boson pairs may be exploited to determine spin and parity of the Higgs boson, a method complementary to spin-parity measurements in Higgs-strahlung. For a Higgs mass above the on-shell ZZ decay threshold, a model-independent analysis can be performed, but only by making use of additional angular correlation effects in gluon-gluon fusion at the LHC and gamma-gamma fusion at linear colliders. In the intermediate mass range, in which the Higgs boson decays into pairs of real and virtual Z bosons, threshold effects and angular correlations, parallel to Higgs-strahlung, may be adopted to determine spin and parity, though high event rates will be required for the analysis in practice.

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S. Y. Choi, D. J. Miller, M. M. Muhlleitner, P. M. Zerwas. 2002-10-04. Identifying the Higgs Spin and Parity in Decays to Z Pairs. https://doi.org/10.1016/s0370-2693(02)03191-x

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