@Article{ATLASCollaborationAad_etal2020,
author="ATLAS Collaboration (Aad, G. et al
and Alvarez Piqueras, D.
and Aparisi Pozo, J. A.
and Bailey, A. J.
and Cabrera Urban, S.
and Castillo, F. L.
and Castillo Gimenez, V.
and Cerda Alberich, L.
and Costa, M. J.
and Escobar, C.
and Estrada Pastor, O.
and Ferrer, A.
and Fiorini, L.
and Fullana Torregrosa, E.
and Fuster, J.
and Garcia, C.
and Garcia Navarro, J. E.
and Gonzalez de la Hoz, S.
and Gonzalvo Rodriguez, G. R.
and Guerrero Rojas, J. G.
and Higon-Rodriguez, E.
and Lacasta, C.
and Lozano Bahilo, J. J.
and Madaffari, D.
and Mamuzic, J.
and Marti-Garcia, S.
and Melini, D.
and Mi{\~{n}}ano, M.
and Mitsou, V. A.
and Rodriguez Bosca, S.
and Rodriguez Rodriguez, D.
and Ruiz-Martinez, A.
and Salt, J.
and Santra, A.
and Soldevila, U.
and Sanchez, J.
and Valero, A.
and Valls Ferrer, J. A.
and Vos, M.",
title="Search for light long-lived neutral particles produced in pp collisions at root s=13 TeV and decaying into collimated leptons or light hadrons with the ATLAS detector",
journal="European Physical Journal C",
year="2020",
publisher="Springer",
volume="80",
number="5",
pages="450 - 29pp",
abstract="Several models of physics beyond the Standard Model predict the existence of dark photons, light neutral particles decaying into collimated leptons or light hadrons. This paper presents a search for long-lived dark photons produced from the decay of a Higgs boson or a heavy scalar boson and decaying into displaced collimated Standard Model fermions. The search uses data corresponding to an integrated luminosity of 36.1 fb-1 collected in proton-proton collisions at root s=13 TeV recorded in 2015-2016 with the ATLAS detector at the Large Hadron Collider. The observed number of events is consistent with the expected background, and limits on the production cross section times branching fraction as a function of the proper decay length of the dark photon are reported. A cross section times branching fraction above 4 pb is excluded for a Higgs boson decaying into two dark photons for dark-photon decay lengths between 1.5 mm and 307 mm.",
optnote="WOS:000546996400002",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=4460), last updated on Fri, 24 Jul 2020 09:40:18 +0000",
issn="1434-6044",
doi="10.1140/epjc/s10052-020-7997-4",
opturl="https://arxiv.org/abs/1909.01246",
opturl="https://doi.org/10.1140/epjc/s10052-020-7997-4",
language="English"
}