Search for charged Higgs bosons in decays of top quarks

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

2009

Comments

Published in PHYSICAL REVIEW D 80, 051107(R) (2009). Copyright © 2009 The American Physical Society. Used by permission.

Abstract

We present a search for charged Higgs bosons in decays of top quarks, in the mass range 80 < m_H^± < 155 GeV, assuming the subsequent decay H⁺ → τ⁺v_τ (and its charge conjugate). Using 0.9 fb^-1 of lepton + jets data collected with the D0 detector at the Fermilab Tevatron pp collider, operating at a center of mass energy √s = 1.96 TeV, we find no evidence for a H^± signal. Hence we exclude branching ratios B(t → H⁺b) > 0.24 for m_H^± = 80 GeV and B(t → H⁺b) > 0.19 for m_H^± =155 GeV at the 95% C.L.