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Search for First and Second Generation Leptoquarks at DØ

1994/09/30 by Douglas M. Norman, Norman, Douglas M., the DZero Collaboration +1
Computer Science · Engineering · Physics and Astronomy · #Computational Physics and Python Applications #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Magnetic confinement fusion research #Particle Accelerators and Free-Electron Lasers #Particle accelerators and beam dynamics #Particle physics theoretical and experimental studies #hep-ex

paper · pdf · doi:10.48550/arxiv.hep-ex/9409008

Talk presented at the '94 meeting of the Division of Particles and Fields, 5 pages, LaTeX with one figure included via psfig.tex utility; uses WORLDSCI.STY, FERMILAB-CONF-94-267-E. (This resubmission fixes a problem with the figure postscript file that caused problems with latex.)

openalex publication_date 1994/09/30 · arxiv created 1994/10/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

A search for first and second generation leptoquarks has been done with the DØ detector at Fermilab's pp collider with √(s)=1.8 TeV. 95% C.L. mass limits for first generation scalar leptoquarks have been recently published. The number for the total integrated luminosity used in the first generation leptoquark analysis has changed (via a change in the total inelastic cross section) since the publication. The new limits are 130 GeV/c2 and 116 GeV/c2 for a respective 100% and 50% decay branching ratio of the leptoquark to electron. The preliminary upper limit on the cross section from the search for second generation scalar leptoquarks has set limits on the mass of the second generation leptoquark of 97 GeV/c2 for 100% branching to muons and 80 GeV/c2 for 50% branching. In contrast with leptoquark detection thresholds at e+e- and e-p machines, these limits are independent of the unknown coupling of the leptoquark to leptons and quarks.

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