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Search for Doubly Charged Higgs Boson Pair Production in $p\bar{p}$ Collisions at √s=1.96 TeV
Stockholm University, Faculty of Science, Department of Physics. (Elementarpartikelfysik)
2011 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 108, 021801- p.Article in journal (Refereed) Published
Abstract [en]

We present a search for pair production of doubly charged Higgs bosons in the processes qq̅        →H++H-- decaying through H±±→τ±τ±±τ±±μ±. The search is performed in pp̅        collisions at a center-of-mass energy of √s=1.96  TeV using an integrated luminosity of up to 7.0  fb-1 collected by the D0 experiment at the Fermilab Tevatron Collider. The results are used to set 95% C.L. limits on the pair production cross section of doubly charged Higgs bosons and on their mass for different H±± branching fractions. Models predicting different H±± decays are investigated. Assuming B(H±±→τ±τ±)=1 yields an observed (expected) lower limit on the mass of a left-handed HL±± boson of 128 (116) GeV and assuming B(H±±→μ±τ±)=1 the corresponding limits are 144 (149) GeV. In a model with B(H±±→τ±τ±)=B(H±±→μ±τ±)=B(H±±→μ±μ±)=1/3, we obtain M(HL±±)>130   (138)  GeV.

Place, publisher, year, edition, pages
2011. Vol. 108, 021801- p.
National Category
Subatomic Physics
Research subject
URN: urn:nbn:se:su:diva-69584DOI: 10.1103/PhysRevLett.108.021801ISI: 000298990900002OAI: diva2:477869
Swedish Research Council


Available from: 2012-01-13 Created: 2012-01-13 Last updated: 2012-12-05Bibliographically approved

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Åsman, Barbro
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