Search for first generation scalar leptoquark pairs in $p\bar{p}$ collisions at $\sqrt{s} = 1.8$ TeV

We have searched for first generation scalar leptoquark (LQ) pairs in the enu+jets channel using ppbar collider data (integrated luminosity= 115 pb^-1) collected by the DZero experiment at the Fermilab Tevatron during 1992-96. The analysis yields no candidate events. We combine the results with those from the ee+jets and nunu+jets channels to obtain 95% confidence level (CL) upper limits on the LQ pair production cross section as a function of mass and of beta, the branching fraction to a charged lepton. Comparing with the next-to-leading order theory, we set 95% CL lower limits on the LQ mass of 225, 204, and 79 GeV/c^2 for beta=1, 1/2, and 0, respectively.

Note:

14 pages, 4 figures, submitted to Physical Review Letters Replaced to correct visitor addresses Report-no: Fermilab-Pub-97/344-E

D0
anti-p p: colliding beams
anti-p p: inclusive reaction
search for: leptoquark
scalar particle: leptoquark
leptoquark: pair production
decay: leptoquark
mass: leptoquark
lower limit
channel cross section: upper limit

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Search for first generation scalar leptoquark pairs in ppˉp\bar{p}ppˉ​ collisions at s=1.8\sqrt{s} = 1.8s​=1.8 TeV

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Search for first generation scalar leptoquark pairs in $p\bar{p}$ collisions at $\sqrt{s} = 1.8$ TeV