Abstract
A search for a Higgs boson produced via vector-boson fusion and decaying into invisible particles is presented, using 20.3 fb(-1) of proton-proton collision data at a centre-of-mass energy of 8TeV recorded by the ATLAS detector at the LHC. For a Higgs boson with a mass of 125 GeV, assuming the Standard Model production cross section, an upper bound of 0.28 is set on the branching fraction of H -> invisible at 95% confidence level, where the expected upper limit is 0.31. The results are interpreted in models of Higgs-portal dark matter where the branching fraction limit is converted into upper bounds on the dark-matter-nucleon scattering cross section as a function of the dark-matter particle mass, and compared to results from the direct dark-matter detection experiments.
Dokumententyp: | Zeitschriftenartikel |
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Fakultät: | Physik |
Themengebiete: | 500 Naturwissenschaften und Mathematik > 530 Physik |
URN: | urn:nbn:de:bvb:19-epub-38115-5 |
ISSN: | 1029-8479 |
Bemerkung: | ATLAS Collaboration: weitere AutorInnen siehe PDF |
Sprache: | Englisch |
Dokumenten ID: | 38115 |
Datum der Veröffentlichung auf Open Access LMU: | 04. Mai 2017, 13:11 |
Letzte Änderungen: | 08. Mai 2024, 09:12 |