Search for doubly-charged Higgs boson pair production in ppbar collisions at sqrt{s} = 1.96 TeV

Collaboration, D0 and Bertram, Iain and Borissov, Guennadi and Fox, Harald and Ross, Anthony and Williams, Mark and Price, Darren (2012) Search for doubly-charged Higgs boson pair production in ppbar collisions at sqrt{s} = 1.96 TeV. Physical review letters, 108 (2). ISSN 1079-7114

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Abstract

We present a search for pair production of doubly-charged Higgs bosons in the processes qqbar to H++H-- decaying through H++/-- to tau tau, muon tau, muon muon. The search is performed in ppbar collisions at a center-of-mass energy of sqrt{s}=1.96 TeV using an integrated luminosity of 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 BR(H++ -> tau+ tau+)=1 yields an observed (expected) lower limit on the mass of a left-handed H++/-- boson of 128 (116) GeV and assuming BR(H++ -> mu+ tau+)=1 the corresponding limits are 144 (149) GeV. In a model with BR(H++ -> tau+ tau+)=BR(H++ -> mu+ tau+)=BR(H++ -> mu+ mu+)=1/3, we obtain M(H++(L) > 130 (138) GeV.

Item Type: Journal Article
Journal or Publication Title: Physical review letters
Additional Information: © 2012 American Physical Society Accepted by PRL
Uncontrolled Keywords: /dk/atira/pure/subjectarea/asjc/3100
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 63576
Deposited By: ep_importer_pure
Deposited On: 24 Apr 2013 08:28
Refereed?: Yes
Published?: Published
Last Modified: 17 Feb 2020 01:54
URI: https://eprints.lancs.ac.uk/id/eprint/63576

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