6533b7defe1ef96bd1275d5d
RESEARCH PRODUCT
Searches for lepton number violating $K^+$ decays
Tomáš HusekD. T. MadigozhinA. SturgessJ. B. DaintonMatteo LupiP. F. DalpiazR. MarchevskiE. GamberiniJürgen EngelfriedT. BacheG. LatinoClaudio SantoniA. FilippiA. I. ZinchenkoM. MedvedevaJ. R. FryE. MauriceT. CapusselaA. GianoliAlessandro LonardoE. Cortina GilRoberto PiandaniGiuseppe RuggieroH. O. DanielssonRoberto GuidaV. KurochkaLuca PontissoM. PicciniYu. PotrebenikovG. Lehmann MiottoA. KleimenovaVladimir RyjovL. FedericiC. GrahamF. BucciD. CowardB. VelgheJ. CarmignaniM. BorettoL. Di LellaTommaso SpadaroM. VormsteinS. SchuchmannV. FalaleevM. MishevaF. CostantiniN. DobleBabette DöbrichG. MannocchiG. D'agostiniM. PepeA. MapelliB. WronaS. GiudiciP. CenciFabrizio PetrucciG. SaracinoO. HutanuC. J. ParkinsonDavid HutchcroftEmilio LeonardiP. RubinLeander LitovV. KozhuharovI. PolenkevichM. ZamkovskyA. SalamonG. KhoriauliAntonino SergiA. RomanoFausto SargeniG. AnzivinoA. MefodevI. MannelliA P OstankovM. KovalE. IacopiniF. BrizioliRoberta ArcidiaconoE. GushchinP. LubranoT. NumaoPaolo ValenteMatthew NoyR. W. L. JonesM. Perrin-terrinM. SozziHelen F HeathIlaria NeriY. PetrovF. HahnJohannes BernhardVincenzo BonaiutoT. EnikDouglas BrymanSergei FedotovM. LentiF. NewsonN. A. MolokanovaR. FantechiN. De SimoneE. PedreschiG. LamannaS. ShkarovskiyV. PalladinoA. ParentiF. SpinellaA. KorotkovaA. FucciR. LolliniEvgueni GoudzovskiM. NapolitanoE. MinucciGeorgi P. GeorgievViacheslav DukM. MirraF. MarchettoPiero ViciniErnesto MiglioreC. CerriP. LichardA. M. BragadireanuS. TrilovRoberto AmmendolaCristina BiinoMauro RaggiB. JenningerS. MovchanC. LazzeroniF. AmbrosinoM. MoulsonV. FascianelliKarol KampfV. SugonyaevMario GiorgiD. Di FilippoL. GatignonS. PadolskiM. CorvinoD. ProtopopescuL. BicianJ. SwallowNicolas LurkinM. B. BrunettiR. AlibertiA. NortonAndrea BiagioniR. VolpeA. ConovaloffJ. KunzeM. FioriniD. LomidzeO. YushchenkoV. KurshetsovS. KholodenkoB. CheccucciP. CooperPaolo MassarottiRainer WankeE. LariA. ShaikhievFrancesco GonnellaVladimir KekelidzeTomas BlazekMattia BarbaneraA. Cotta RamusinoJacopo PinzinoS. MartellottiV. ObraztsovB. AngelucciL. IacobuzioE. B. HolzerDave BrittonN. Estrada-tristanV. E. SemenovA. CeccucciR. PageAndrea BizzetiJ. JerhotP. PetrovH. D. WahlV. CernyE. MenichettiA. KhotyantsevD. SoldiK. MassriL. FultonF. DuvalYu. G. KudenkoA. AntonelliL. PeruzzoJ. L. FuB. Bloch-devauxE. ImbergamoS. VendittiZ. KucerovaPaul LaycockS. GhinescuG. Lanfranchisubject
branching ratio: upper limitK+: rare decayNA62 experiment01 natural sciencesNA62Settore FIS/04 - Fisica Nucleare e SubnucleareHigh Energy Physics - Experimentelectron: pair productionHigh Energy Physics - Experiment (hep-ex)EconomicaK+: branching ratio[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]K meson decayPhysicsLarge Hadron ColliderElectroweak interactionlcsh:QC1-999muon: pair productionlepton number violationK+: semileptonic decayK+: secondary beamParticle Physics - ExperimentNuclear and High Energy PhysicsParticle physicsCERN LabS010.46FOS: Physical scienceskaonsS010:Desig=46K+ --> pi- 2muon+Partícules (Física nuclear)PE2_2Violació CP (Física nuclear)0103 physical sciencesKaon decayslepton number violation K meson K meson decay010306 general physicslepton number: violationKaon decays Lepton Number Violationhep-ex010308 nuclear & particles physicsS010:Desig=19CERN SPSK mesonLepton numberK+ --> pi- electron positronKaon Physics; Lepton Flavour Violation; NA62S010.19lcsh:Physicsexperimental resultsdescription
The NA62 experiment at CERN reports a search for the lepton number violating decays K+ -> pi(-)e(+)e(+) and K+ -> pi(-)mu(+)mu(+) using a data sample collected in 2017. No signals are observed, and upper limits on the branching fractions of these decays of 2.2 x 10(-10) and 4.2 x 10(-11) are obtained, respectively, at 90% confidence level. These upper limits improve on previously reported measurements by factors of 3 and 2, respectively.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-10-01 |