Search for Associated W and Higgs Boson Production in pp 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 Snow, University of Nebraska-LincolnFollow
D0 Collaboration

Date of this Version

2-6-2009

Comments

Published in PHYSICAL REVIEW LETTERS 102, 051803 (2009). Copyright © 2009 The American Physical Society. Used by permission.

Abstract

We present results of a search for WH → ℓνbb production in pp collisions based on the analysis of 1.05 fb^-1 of data collected by the D0 experiment at the Fermilab Tevatron, using a neural network for separating the signal from backgrounds. No signal-like excess is observed, and we set 95% C.L. upper limits on the WH production cross section multiplied by the branching ratio for H → bb for Higgs boson masses between 100 and 150 GeV. For a mass of 115 GeV, we obtain an observed (expected) limit of 1.5 (1.4) pb, a factor of 11.4 (10.7) times larger than the standard model prediction.