Search for charged Higgs bosons in decays of top quarks

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2009-09-30

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Abazov, V. M.
Abbott, B.
Abolins, M.
Acharya, B. S.
Adams, M.
Adams, T.
Aguilo, E.
Ahsan, M.
Alexeev, G. D.
Alkhazov, G.

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We present a search for charged Higgs bosons in decays of top quarks, in the mass range 80<mH±<155GeV, assuming the subsequent decay H+→τ+ντ (and its charge conjugate). Using 0.9fb-1 of lepton+jets data collected with the D0 detector at the Fermilab Tevatron pp̄ collider, operating at a center of mass energy s=1.96TeV, we find no evidence for a H± signal. Hence we exclude branching ratios B(t→H+b)>0.24 for mH±=80GeV and B(t→H+b)>0.19 for mH±=155GeV at the 95% C.L. © 2009 The American Physical Society.

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Physical Review D - Particles, Fields, Gravitation and Cosmology, v. 80, n. 5, 2009.