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Search for pair production of second generation scalar leptoquarks

  • 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
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  • , M. Anastasoaie
  • , L. S. Ancu
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  • , M. Aoki
  • , Y. Arnoud
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Research output: Contribution to journalArticlepeer-review

39 Scopus citations

Abstract

We report on a search for the pair production of second generation scalar leptoquarks (LQ) in p over(p, ̄) collisions at the center of mass energy sqrt(s) = 1.96 TeV using a data set corresponding to an integrated luminosity of 1.0 fb-1 collected with the DØ experiment at the Fermilab Tevatron Collider. Topologies arising from the LQ over(LQ, -) → μ q ν q and LQ over(LQ, -) → μ q μ q decay modes are investigated. No excess of data over the standard model prediction is observed and upper limits on the leptoquark pair production cross section are derived at the 95% C.L. as a function of the leptoquark mass and the branching fraction β for the decay LQ → μ q. These are interpreted as lower limits on the leptoquark mass as a function of β. For β = 1 (0.5), scalar second generation leptoquarks with masses up to 316 GeV (270 GeV) are excluded.

Original languageEnglish
Pages (from-to)224-232
Number of pages9
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume671
Issue number2
DOIs
StatePublished - Jan 19 2009

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