Search for scalar leptoquark pairs decaying to νν̅ qq̅ in pp̅ collisions at √s=1.96 TeV

Authors

Darin Acosta, University of FloridaFollow
Kenneth A. Bloom, University of Nebraska-LincolnFollow
Collider Detector at Fermilab Collaboration

Date of this Version

6-10-2005

Comments

Published by American Physical Society. Phys. Rev. D 71, 112001 (2005). http://prd.aps.org/. Copyright © 2005 American Physical Society. Permission to use.

Abstract

We report on a search for the pair production of scalar leptoquarks (LQ), using 191 pb^-1 of proton-antiproton collision data recorded by the CDF experiment during Run II of the Tevatron. The leptoquarks are sought via their decay into a neutrino and quark yielding missing transverse energy and several jets of large transverse energy. No evidence for LQ production is observed, and limits are set on sigma(pp̅→LQ L̅Q̅X→ νν̅qq̅X). Using a next-to-leading order theoretical prediction of the cross section for LQ production, we exclude first-generation LQ in the mass interval 78 to 117 GeV/c² at the 95% confidence level for BR(LQ→νq)=100%.