Search for single production of scalar leptoquarks in p\bar{p} collisions decaying into muons and quarks with the D0 detector

Abstract

We report on a search for second generation leptoquarks LQ_2 which decay into a muon plus quark in p\bar{p} collisions at a center-of-mass energy of sqrt{s} = 1.96 TeV in the D0 detector using an integrated luminosity of about 300 pb-1. No evidence for a leptoquark signal is observed and an upper bound on the product of the cross section for single leptoquark production times branching fraction beta into a quark and a muon was determined for second generation scalar leptoquarks as a function of the leptoquark mass. This result has been combined with a previously published D0 search for leptoquark pair production to obtain leptoquark mass limits as a function of the leptoquark-muon-quark coupling, lambda. Assuming lambda=1, lower limits on the mass of a second generation scalar leptoquark are m{LQ_2}>274 GeV and m{LQ_2}>226 GeV for beta=1 and beta=1/2, respectively.

submitted to PLB

References in corpus (5)

• The Upgraded D0 Detector
• The Muon System of the Run II D0 Detector
• Leptoquark Single and Pair production at LHC with CalcHEP/CompHEP in the complete model
• Search for Second-Generation Scalar Leptoquarks in $\mathbf{p}\bar{\mathbf{p}}$ Collisions at $\sqrt{s}$=1.96 TeV
• Search for Pair Production of Second Generation Scalar Leptoquarks in ppbar Collisions at sqrt(s)=1.96 TeV

Cited by in corpus (6)

• Physics of leptoquarks in precision experiments and at particle colliders
• Theory and Phenomenology of Exotic Isosinglet Quarks and Squarks
• Search for single production of scalar leptoquarks in proton-proton collisions at sqrt(s) = 8 TeV
• Constraining Scalar Leptoquarks from the K and B Sectors
• Constraints on New Physics from Long Baseline Neutrino Oscillation Experiments
• Review of searches for Higgs bosons and beyond the standard model physics at the Tevatron