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.
Anastasi, A., Babusci, D., Bencivenni, G., Berlowski, M., Bloise, C., Bossi, F., et al. (2015). Search for dark Higgsstrahlung in e+e-→μ+μ- and missing energy events with the KLOE experiment. PHYSICS LETTERS. SECTION B, 747, 365-372 [10.1016/j.physletb.2015.06.015].
Search for dark Higgsstrahlung in e+e-→μ+μ- and missing energy events with the KLOE experiment
Fantini A.;Loffredo S.;Mascolo M.;Messi R.;Sarra I.;
2015-07-30
Abstract
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.| File | Dimensione | Formato | |
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