@Article{NA62CollaborationCortinaGil+Husek2019, author="NA62 Collaboration (Cortina Gil, E. et al and Husek, T.", title="First search for K+ -> pi(+) nu(nu)over-bar using the decay-in-flight technique", journal="Physics Letters B", year="2019", publisher="Elsevier Science Bv", volume="791", pages="156--166", abstract="The NA62 experiment at the CERN SPS reports the first search for K+ -> pi(+) nu(nu) over bar using the decay-in-flight technique, based on a sample of 1.21 x10(11) K+ decays collected in 2016. The single event sensitivity is 3.15 x10(-10), corresponding to 0.267 Standard Model events. One signal candidate is observed while the expected background is 0.152 events. This leads to an upper limit of 14 x10(-10) on the K+ -> pi(+) nu(nu) over bar branching ratio at 95{\%} CL.", optnote="WOS:000462321800023", optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=3957), last updated on Sun, 07 Apr 2019 18:20:03 +0000", issn="0370-2693", doi="10.1016/j.physletb.2019.01.067", opturl="https://arxiv.org/abs/1811.08508", opturl="https://doi.org/10.1016/j.physletb.2019.01.067", language="English" }