Abstract
We report on searches for the production of scalar and vector leptoquarks in pp̄ collisions at the Tevatron collider, which are based on integrated luminosities of up to 2.5 fb−1 collected with the DO/ detector. Searches for the pair‐production of leptoquarks of all_three generations have been performed using the LQLQ¯→l+l−qq̄, →l±vqq̄, and →vvqq̄, →τbτb final states. Upper limits on the production cross sections are given and are used to derive lower limits on the leptoquark masses as a function of the branching fraction β of the Leptoquark in a charged lepton and a quark and for different couplings.
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