002917064 001__ 2917064
002917064 003__ SzGeCERN
002917064 005__ 20250224180826.0
002917064 0247_ $$2DOI$$9APS$$a10.1103/PhysRevLett.133.121803$$qpublication
002917064 0248_ $$aoai:cds.cern.ch:2917064$$pcerncds:FULLTEXT$$pcerncds:CERN:FULLTEXT$$pcerncds:CERN
002917064 035__ $$9https://inspirehep.net/api/oai2d$$aoai:inspirehep.net:2830683$$d2024-11-13T22:58:42Z$$h2024-11-14T06:51:44Z$$mmarcxml
002917064 035__ $$9Inspire$$a2830683
002917064 041__ $$aeng
002917064 100__ $$aAndreev, Yu M$$jORCID:0000-0002-7397-9665$$uUnlisted
002917064 245__ $$9APS$$aDark-Sector Search via Pion-Produced η and η′ Mesons Decaying Invisibly in the NA64h Detector
002917064 260__ $$c2024
002917064 300__ $$a6 p
002917064 520__ $$9APS$$aWe present the first results from a proof-of-concept search for dark sectors via invisible decays of pseudoscalar η and η′ mesons in the NA64h experiment at the CERN SPS. Our novel technique uses the charge-exchange reaction of 50 GeV π- on nuclei of an active target as the source of neutral mesons. The η,η′→invisible events would exhibit themselves via a striking signature—the complete disappearance of the incoming beam energy in the detector. No evidence for such events has been found with 2.9×109 pions on target accumulated during one day of data taking. This allows us to set a stringent limit on the branching ratio Br(η′→invisible)<2.1×10-4 improving the current bound by a factor of ≃3. We also set a limit on Br(η→invisible)<1.1×10-4 comparable with the existing one. These results demonstrate the great potential of our approach and provide clear guidance on how to enhance and extend the sensitivity for dark sector physics from future searches for invisible neutral meson decays.
002917064 540__ $$3publication$$aCC BY 4.0$$fSCOAP3$$uhttps://creativecommons.org/licenses/by/4.0/
002917064 542__ $$3publication$$dauthors$$g2024
002917064 65017 $$2SzGeCERN$$aNuclear Physics - Experiment
002917064 65017 $$2SzGeCERN$$aParticle Physics - Experiment
002917064 690C_ $$aARTICLE
002917064 690C_ $$aCERN
002917064 693__ $$aCERN SPS$$eNA64
002917064 700__ $$aAntonov, A$$jORCID:0000-0003-1238-5158$$uINFN, Genoa
002917064 700__ $$aAyala Torres, M A$$uUnlisted, CL$$uChile U., Santiago$$vMillennium Institute for Subatomic Physics at High-Energy Frontier (SAPHIR), Fernandez Concha 700, Santiago, Chile
002917064 700__ $$aBanerjee, D$$jORCID:0000-0003-0531-1679$$uCERN
002917064 700__ $$aBanto Oberhauser, B$$jORCID:0009-0006-4795-1008$$uZurich, ETH
002917064 700__ $$aBernhard, J$$jORCID:0000-0001-9256-971X$$uCERN
002917064 700__ $$aBisio, P$$jORCID:0009-0006-8677-7495$$uINFN, Genoa$$vUniversità degli Studi di Genova, 16126 Genova, Italia
002917064 700__ $$aCelentano, A$$jORCID:0000-0002-7104-2983$$uINFN, Genoa
002917064 700__ $$aCharitonidis, N$$jORCID:0000-0001-9506-1022$$uCERN
002917064 700__ $$aCooke, D$$uUniversity Coll. London
002917064 700__ $$aCrivelli, P$$jORCID:0000-0001-5430-9394$$uZurich, ETH
002917064 700__ $$aDepero, E$$jORCID:0000-0003-2239-1746$$uZurich, ETH
002917064 700__ $$aDermenev, A V$$jORCID:0000-0001-5619-376X$$uUnlisted
002917064 700__ $$aDonskov, S V$$jORCID:0000-0002-3988-7687$$uUnlisted
002917064 700__ $$aDusaev, R R$$jORCID:0000-0002-6147-8038$$uUnlisted
002917064 700__ $$aEnik, T$$jORCID:0000-0002-2761-9730$$uUnlisted
002917064 700__ $$aFrolov, V N$$uUnlisted
002917064 700__ $$aGertsenberger, S V$$jORCID:0009-0006-1640-9443$$uUnlisted
002917064 700__ $$aGirod, S$$uCERN
002917064 700__ $$aGninenko, S N$$jORCID:0000-0001-6495-7619$$uUnlisted$$uChile U., Santiago$$vMillennium Institute for Subatomic Physics at High-Energy Frontier (SAPHIR), Fernandez Concha 700, Santiago, Chile
002917064 700__ $$aHösgen, M$$uBonn U., HISKP
002917064 700__ $$aKachanov, V A$$jORCID:0000-0002-3062-010X$$uUnlisted
002917064 700__ $$aKambar, Y$$jORCID:0009-0000-9185-2353$$uUnlisted
002917064 700__ $$aKarneyeu, A E$$jORCID:0000-0001-9983-1004$$uUnlisted
002917064 700__ $$aKekelidze, G D$$jORCID:0000-0002-5393-9199$$uUnlisted
002917064 700__ $$aKetzer, B$$jORCID:0000-0002-3493-3891$$uBonn U., HISKP
002917064 700__ $$aKirpichnikov, D V$$jORCID:0000-0002-7177-077X$$uUnlisted
002917064 700__ $$aKirsanov, M M$$jORCID:0000-0002-8879-6538$$uUnlisted
002917064 700__ $$aKolosov, V N$$uUnlisted
002917064 700__ $$aKramarenko, V A$$jORCID:0000-0002-8625-5586$$uUnlisted$$vAuthors affiliated with an international laboratory covered by a cooperation agreement with CERN
002917064 700__ $$aKravchuk, L V$$jORCID:0000-0001-8631-4200$$uUnlisted
002917064 700__ $$aKrasnikov, N V$$uUnlisted$$vAuthors affiliated with an international laboratory covered by a cooperation agreement with CERN
002917064 700__ $$aKuleshov, S V$$jORCID:0000-0002-3065-326X$$uUnlisted, CL$$uChile U., Santiago$$vMillennium Institute for Subatomic Physics at High-Energy Frontier (SAPHIR), Fernandez Concha 700, Santiago, Chile
002917064 700__ $$aLyubovitskij, V E$$jORCID:0000-0001-7467-572X$$uUnlisted$$uSanta Maria U., Valparaiso$$uChile U., Santiago$$vUniversidad Técnica Federico Santa María and CCTVal, 2390123 Valparaíso, Chile
002917064 700__ $$aMarini, A$$jORCID:0000-0002-6778-2161$$uINFN, Genoa
002917064 700__ $$aMarsicano, L$$jORCID:0000-0002-8931-7498$$uINFN, Genoa
002917064 700__ $$aMatveev, V A$$jORCID:0000-0002-2745-5908$$uUnlisted
002917064 700__ $$aMena Fredes, R$$uSanta Maria U., Valparaiso$$uChile U., Santiago$$vMillennium Institute for Subatomic Physics at High-Energy Frontier (SAPHIR), Fernandez Concha 700, Santiago, Chile
002917064 700__ $$aMena Yanssen, R G$$uSanta Maria U., Valparaiso$$uChile U., Santiago$$vMillennium Institute for Subatomic Physics at High-Energy Frontier (SAPHIR), Fernandez Concha 700, Santiago, Chile
002917064 700__ $$aMolina Bueno, L$$jORCID:0000-0001-9720-9764$$uValencia U., IFIC
002917064 700__ $$aMongillo, M$$jORCID:0009-0000-7331-4076$$uZurich, ETH
002917064 700__ $$aPeshekhonov, D V$$jORCID:0009-0008-9018-5884$$uUnlisted
002917064 700__ $$aPolyakov, V A$$jORCID:0000-0001-5989-0990$$uUnlisted
002917064 700__ $$aRadics, B$$jORCID:0000-0002-8978-1725$$uYork U., Toronto (main)
002917064 700__ $$aSalamatin, K M$$jORCID:0000-0001-6287-8685$$uUnlisted
002917064 700__ $$aSamoylenko, V D$$uUnlisted
002917064 700__ $$aSieber, H$$jORCID:0000-0003-1476-4258$$uZurich, ETH
002917064 700__ $$aShchukin, D A$$uUnlisted
002917064 700__ $$aSoto, O$$uLa Serena U.$$uChile U., Santiago$$vMillennium Institute for Subatomic Physics at High-Energy Frontier (SAPHIR), Fernandez Concha 700, Santiago, Chile
002917064 700__ $$aTikhomirov, V O$$jORCID:0000-0002-9634-0581$$uUnlisted
002917064 700__ $$aTlisova, I V$$jORCID:0000-0003-1552-2015$$uUnlisted
002917064 700__ $$aToropin, A N$$jORCID:0000-0002-2106-4041$$uUnlisted
002917064 700__ $$aTuzi, M$$jORCID:0009-0000-6276-1401$$uValencia U., IFIC
002917064 700__ $$aVolkov, P V$$uUnlisted
002917064 700__ $$aVolkov, V Yu$$jORCID:0009-0005-3500-5121$$uUnlisted
002917064 700__ $$aVoronchikhin, I V$$jORCID:0000-0003-3037-636X$$uUnlisted
002917064 700__ $$aZamora-Saá, J$$uUnlisted, CL$$uChile U., Santiago$$vMillennium Institute for Subatomic Physics at High-Energy Frontier (SAPHIR), Fernandez Concha 700, Santiago, Chile
002917064 700__ $$aZhevlakov, A S$$jORCID:0000-0002-7775-5917$$uUnlisted
002917064 710__ $$gNA64 Collaboration
002917064 773__ $$c121803$$mpublication$$n12$$pPhys. Rev. Lett.$$v133$$y2024
002917064 8564_ $$82680798$$s557287$$uhttps://cds.cern.ch/record/2917064/files/Publication.pdf$$yFulltext
002917064 960__ $$a13
002917064 980__ $$aARTICLE