Search for scalar leptoquarks in the acoplanar jet topology in ppbar collisions at sqrt(s)=1.96 TeV

TL;DR

This paper reports a search for scalar leptoquarks in proton-antiproton collisions at 1.96 TeV, analyzing acoplanar jets with missing energy, resulting in a lower mass limit of 136 GeV at 95% confidence level.

Contribution

First search for scalar leptoquarks in the acoplanar jet topology at the Tevatron, setting new lower mass limits based on collision data.

Findings

No significant excess over standard model expectations.

Lower mass limit of 136 GeV for scalar leptoquarks.

Data consistent with standard model predictions.

Abstract

A search for leptoquarks has been performed in 310 pb-1 of data from ppbar collisions at a center-of-mass energy of 1.96 TeV, collected by the D0 detector at the Fermilab Tevatron Collider. The topology analyzed consists of acoplanar jets with missing transverse energy. The data show good agreement with standard model expectations, and a lower mass limit of 136 GeV has been set at the 95% C.L. for a scalar leptoquark decaying exclusively into a quark and a neutrino.