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Search for a scalar or vector particle decaying into Zγ in p over(p, ̄) collisions at sqrt(s) = 1.96 TeV

  • V. M. Abazov
  • , B. Abbott
  • , M. Abolins
  • , B. S. Acharya
  • , M. Adams
  • , T. Adams
  • , E. Aguilo
  • , M. Ahsan
  • , G. D. Alexeev
  • , G. Alkhazov
  • , A. Alton
  • , G. Alverson
  • , G. A. Alves
  • , M. Anastasoaie
  • , L. S. Ancu
  • , T. Andeen
  • , S. Anderson
  • , B. Andrieu
  • , M. S. Anzelc
  • , M. Aoki
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Résultats de recherche: Contribution à un journalArticleRevue par des pairs

27 Citations (Scopus)

Résumé

We present a search for a narrow scalar or vector resonance decaying into Zγ with a subsequent Z boson decay into a pair of electrons or muons. The data for this search were collected with the DØ detector at the Fermilab Tevatron p over(p, ̄) collider at a center of mass energy sqrt(s) = 1.96   TeV. Using 1.1 (1.0) fb-1 of data, we observe 49 (50) candidate events in the electron (muon) channel, in good agreement with the standard model prediction. From the combination of both channels, we derive 95% C.L. upper limits on the cross section times branching fraction (σ × B) into Zγ. These limits range from 0.19 (0.20) pb for a scalar (vector) resonance mass of 600 GeV/ c2 to 2.5 (3.1) pb for a mass of 140 GeV/ c2.

langue originaleAnglais
Pages (de - à)349-355
Nombre de pages7
journalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume671
Numéro de publication3
Les DOIs
étatPublié - 26 janv. 2009
Modification externeOui

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