Study of theZZγandZγγCouplings inZ(νν)γProduction

1997/02/22 by S. Abachi, B. Abbott, M. Abolins +96 · 3 citations
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #Neutrino Physics Research #Particle physics theoretical and experimental studies #hep-ex

paper · pdf · doi:10.1103/physrevlett.78.3640

published as Phys.Rev.Lett.78:3640-3645,1997 · 10 pages, 2 figures, 2 tables

arxiv created 1997/02/22 · openalex publication_date 1997/05/12 · arxiv updated 2009/11/30 · openalex created_date 2017/03/16 · openalex updated_date 2026/07/28

Abstract

We have measured the ZZ\ensuremathγ and Z\ensuremathγ\ensuremathγ couplings by studying 13.1pb^\ensuremath-1 of pp\ensuremath→E_t\ensuremathγ+X data at √(s)\phantom\rule0ex0ex=\phantom\rule0ex0ex1.8TeV with the D\O detector at the Fermilab Tevatron Collider. This is the first study of hadronic Z\ensuremathγ production in the neutrino decay channel. Combining this measurement with our previous results using Z\ensuremath→ee and \ensuremathμ\ensuremathμ yields the most stringent 95% C.L. limits to date on anomalous couplings: |h₃₀^Z|<0.4, |h₄₀^Z|<0.06 ( \ensuremathΛ\phantom\rule0ex0ex=\phantom\rule0ex0ex750GeV).

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• Measurement of theZγ→νν¯γProduction Cross Section and Limits on AnomalousZZγandZγγCouplings inpp¯Collisions ats=1.96 TeV
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