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Search for dark Higgsstrahlung in e(+0)e(-) -> mu(+)mu(-) and missing energy events with the KLOE experiment
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2015 (English)In: Physics Letters B, ISSN 0370-2693, Vol. 747, 365-372 p.Article in journal (Refereed) Published
Abstract [en]

We searched for evidence of a Higgsstrahlung process in a secluded sector, leading to a final state with a dark photon U and a dark Higgs boson h', with the KLOE detector at DA Phi NE. We investigated the case of h' lighter than U, with U decaying into a muon pair and h' producing a missing energy signature. We found no evidence of the process and set upper limits to its parameters in the range 2m(mu) < m(U) < 1000 MeV, m(h') < m(U). (C) 2015 The Authors. Published by Elsevier B.V.

Place, publisher, year, edition, pages
2015. Vol. 747, 365-372 p.
Keyword [en]
Dark matter, Dark forces, U boson, Upper limit, Higgsstrahlung
National Category
Physical Sciences
URN: urn:nbn:se:uu:diva-260834DOI: 10.1016/j.physletb.2015.06.015ISI: 000358624800061OAI: oai:DiVA.org:uu-260834DiVA: diva2:848825
EU, FP7, Seventh Framework Programme, FP7-INFRASTRUCTURES-2008-1 227431
Available from: 2015-08-26 Created: 2015-08-25 Last updated: 2015-08-26Bibliographically approved

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Balkestahl, Li CaldeiraHeijkenskjold, LenaIkegami, Walter AnderssonJohansson, TordKupsc, AndrezejWolke, Magnus
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