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Search for charged Higgs bosons in top quark decays
Univ Michigan, Ann Arbor.ORCID iD: 0000-0002-8913-0981
2009 (English)In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 682, no 3, 278-286 p.Article in journal (Refereed) Published
Abstract [en]

We present a search for charged Higgs bosons in top quark decays. We analyze the e + jets, mu + jets, ee, e mu, mu mu, tau e and tau mu final states from top quark pair production events, using data from about 1 fb (1) of integrated luminosity recorded by the DO experiment at the Fermilab Tevatron Collider. We consider different scenarios of possible charged Higgs boson decays, one where the charged Higgs boson decays purely hadronically into a charm and a strange quark, another where it decays into a tau lepton and a tau neutrino and a third one where both decays appear. We extract limits on the branching ratio B(t -> H(+)b) for all these models. We use two methods, one where the t (t) over bar production cross section is fixed, and one where the cross section is fitted simultaneously with B(t -> H(+)b). Based on the extracted limits, we exclude regions in the charged Higgs boson mass and tan beta parameter space for different scenarios of the minimal supersymmetric standard model.

Place, publisher, year, edition, pages
2009. Vol. 682, no 3, 278-286 p.
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-72069DOI: 10.1016/j.physletb.2009.11.016ISI: 000274533100003OAI: oai:DiVA.org:kth-72069DiVA: diva2:487701
Note
QC 20120131Available from: 2012-01-31 Created: 2012-01-31 Last updated: 2017-12-08Bibliographically approved

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Strandberg, Jonas

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