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arxiv: 1309.4171 · v3 · pith:O4AW5EPMnew · submitted 2013-09-17 · ✦ hep-ph · hep-ex

CP mixed property of the Higgs-like particle in the decay channel hto Z Z^*to 4l

classification ✦ hep-ph hep-ex
keywords higgs-likeasymmetriescp-oddexperimentsmixedparticlepropertyanalyzed
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Current experiments do not support, as ATLAS and CMS collaborations at the Large Hadron Collider reported, that the Higgs-like resonance discovered in July 2012 is a pure CP-odd state. We examine a general $hZZ$ vertex which contains CP-even and CP-odd couplings, by studying the process $h\to ZZ^*\to l_1^+l_1^-l_2^+l_2^-$ with $l_1,\, l_2= e$ or $\mu$, to explore the CP mixed property of the Higgs-like particle. One momentum asymmetry and two angular asymmetries have been analyzed in order to reveal the difference from different CP-couplings. Our study shows that these asymmetries could be interesting observables in the future precise experiments.

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