Search for Wbb̅ and WH Production in pp̅ Collisions at √s = 1.96 TeV

Authors

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

Document Type

Article

Date of this Version

3-11-2005

Comments

Published by American Physical Society. Phys. Rev. Lett. 94, 091802 (2005). http://prl.aps.org. Copyright © 2005 American Physical Society. Used by permission.

Abstract

We present a search for Wbb̅ production in pp̅ collisions at √s = 1.96 TeV in events containing one electron, an imbalance in transverse momentum, and two b-tagged jets. Using 174 pb^-1 of integrated luminosity accumulated by the D0 experiment at the Fermilab Tevatron collider, and the standard-model description of such events, we set a 95% C.L. upper limit on Wbb̅ production of 6.6 pb for b quarks with transverse momenta p_T^b > 20 GeV and bb̅ separation in pseudorapidity-azimuth space ΔR_bb > 0.75. Restricting the search to optimized bb̅ mass intervals provides upper limits on WH production of 9.0– 12.2 pb for Higgs-boson masses of 105–135 GeV.