Search for Third-Generation Scalar Leptoquarks in pp̅ Collisions at √s = 1.96 TeV

Authors

• V. M. Abazov, Joint Institute for Nuclear Research, Dubna, Russia
• Kenneth A. Bloom, University of Nebraska-LincolnFollow
• Gregory R. Snow, University of Nebraska-LincolnFollow
• D0 Collaboration

Document Type

Article

Date of this Version

8-10-2007

Comments

Published in PHYSICAL REVIEW LETTERS 99, 061801 (2007). © 2007 The American Physical Society. Used by permission.

Abstract

We report on a search for charge-1/3 third-generation leptoquarks (LQ) produced in pp̅ collisions at √s = 1.96 TeV using the D0 detector at Fermilab. Third-generation leptoquarks are assumed to be produced in pairs and to decay to a tau neutrino and a b quark with branching fraction B. We place upper limits on (pp̅→ LQ L̅Q̅) B² as a function of the leptoquark mass M_LQ. Assuming B^-1, we exclude at the 95% confidence level third-generation scalar leptoquarks with M_LQ < 229 GeV.