1997/10/31 by DZERO Collaboration, M. Abolins, B. Abbott +98 · 4 citations
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #hep-ex
paper · pdf · doi:10.1103/physrevlett.80.2051
published as Phys.Rev.Lett.80:2051-2056,1998 · 14 pages, 4 figures, submitted to Physical Review Letters Replaced to correct visitor addresses
arxiv created 1997/11/04 · openalex publication_date 1998/03/09 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We have searched for first generation scalar leptoquark (LQ) pairs in the e\ensuremathν+jets channel using pp collider data (\ensuremath∫Ldt\ensuremath≈115pb^\ensuremath-1) collected by the D0 experiment at the Fermilab Tevatron during 1992--1996. The analysis yields no candidate events. We combine the results with those from the ee+jets and \ensuremathν\ensuremathν+jets channels to obtain 95% confidence level (C.L.) upper limits on the LQ pair production cross section as a function of mass and of \ensuremathβ, the branching fraction to a charged lepton. Comparing with the next-to-leading order theory, we set 95% C.L. lower limits on the LQ mass of 225, 204, and 79GeV/c2 for \ensuremathβ\phantom\rule0ex0ex=\phantom\rule0ex0ex1, (1)/(2), and 0, respectively.