NAGIOS: RODERIC FUNCIONANDO

Search for heavy neutral lepton production in K+ decays to positrons

Repositori DSpace/Manakin

dc.contributor.author	The NA62 Collaboration
dc.contributor.author	Cortina Gil, Eduardo
dc.contributor.author	Husek, Tomas
dc.date.accessioned	2021-04-26T13:28:35Z
dc.date.available	2021-04-26T13:28:35Z
dc.date.issued	2020
dc.identifier.citation	The NA62 Collaboration Cortina Gil, Eduardo Husek, Tomas 2020 Search for heavy neutral lepton production in K+ decays to positrons Physics Letters B 807 135599
dc.identifier.uri	https://hdl.handle.net/10550/78918
dc.description.abstract	A search for heavy neutral lepton (N) production in K+→e+N decays using the data sample collected by the NA62 experiment at CERN in 2017-2018 is reported. Upper limits of the extended neutrino mixing matrix element \|Ue4\|^2 are established at the level of 10^−9 over most of the accessible heavy neutral lepton mass range 144-462 MeV/c^2, with the assumption that the lifetime exceeds 50 ns. These limits improve significantly upon those of previous production and decay searches. The \|Ue4\|^2 range favoured by Big Bang Nucleosynthesis is excluded up to a mass of about 340 MeV/c^2.
dc.language.iso	eng
dc.relation.ispartof	Physics Letters B, 2020, vol. 807, num. 135599
dc.subject	Astrofísica
dc.subject	Física
dc.title	Search for heavy neutral lepton production in K+ decays to positrons
dc.type	journal article	es_ES
dc.date.updated	2021-04-26T13:28:35Z
dc.identifier.doi	10.1016/j.physletb.2020.135599
dc.identifier.idgrec	145770
dc.rights.accessRights	open access	es_ES