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Study of the ZZγ and Zγγ Couplings in Z(νν)γ Production

  • DØ Collaboration
  • Fermi National Accelerator Laboratory
  • New York University
  • Michigan State University
  • Tata Institute of Fundamental Research, Mumbai
  • Columbia University
  • Rice University
  • University of Illinois at Chicago
  • University of California, Berkeley
  • Centro Brasileiro de Pesquisas Fisicas
  • Northeastern University
  • University of Michigan, Ann Arbor
  • Iowa State University
  • Stony Brook University
  • University of Maryland, College Park
  • University of Notre Dame
  • University of Hawaiʻi at Mānoa
  • Brown University
  • University of Rochester
  • Lomonosov Moscow State University
  • Panjab University
  • Northwestern University
  • Institute for High Energy Physics
  • University of Delhi
  • Northern Illinois University
  • Florida State University
  • University of California, Davis
  • University of California at Riverside
  • Boston University
  • Centro de Investigacion y de Estudios Avanzados del Instituto Politécnico Nacional
  • Universidad de los Andes Colombia
  • Seoul National University
  • University of Nebraska-Lincoln
  • University of Arizona
  • University of Texas at Arlington
  • University of California at Irvine
  • CE-SACLAY
  • Brookhaven National Laboratory
  • Texas AandM University
  • Universidad de Buenos Aires
  • University of Oklahoma Bioengineering Center
  • Indiana University Bloomington
  • Korea University
  • Purdue University
  • Universidade do Estado do Rio de Janeiro
  • Kyungsung University

Research output: Contribution to journalArticlepeer-review

46 Scopus citations

Abstract

We have measured the ZZγ and ZZγ couplings by studying 13.1 pb−1 of pp¯→Etγ+ X data at √s = 1.8 TeV with the Dø detector at the Fermilab Tevatron Collider. This is the first study of hadronic Zγ production in the neutrino decay channel. Combining this measurement with our previous results using Z→ee and μμ yields the most stringent 95% C.L. limits to date on anomalous couplings: |h30Z|<0.4, |h40Z|<0.06 (λ=750 GeV.

Original languageEnglish
Pages (from-to)3640-3645
Number of pages6
JournalPhysical Review Letters
Volume78
Issue number19
DOIs
StatePublished - 1997
Externally publishedYes

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