000170144 001__ 170144
000170144 005__ 20260407115446.0
000170144 0247_ $$2doi$$a10.1038/s42005-026-02518-6
000170144 0248_ $$2sideral$$a148724
000170144 037__ $$aART-2026-148724
000170144 041__ $$aeng
000170144 100__ $$aCabrera, A.
000170144 245__ $$aProbing Earth’s missing potassium using the antimatter signature of geoneutrinos
000170144 260__ $$c2026
000170144 5060_ $$aAccess copy available to the general public$$fUnrestricted
000170144 5203_ $$aPuzzles exist in our theories of Earth’s formation and bulk chemical composition. Related to these questions is our incomplete knowledge of the planet’s overall heat budget and thermal history. The successful observation of geoneutrinos originating from uranium and thorium decay chains, manifestations of the planet’s natural radioactivity, serves as the only direct probe of Earth’s internal, radiogenic heat engine so far. Intriguingly, potassium (40K) geoneutrinos have never been observed and have so far been considered impractical to measure despite their importance in Earth’s radioactive inventory. We propose here an approach for potassium geoneutrino detection that exploits their antiparticle nature. The detection framework relies on the LiquidO technique to identify positrons, thereby reducing otherwise overwhelming backgrounds. Antineutrino interactions with candidate
isotope targets have been thoroughly examined and copper is found to be the ideal isotope able to meet all experimental feasibility conditions. We discuss the challenging experimental requirements to yield a potassium geoneutrino discovery.
000170144 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttps://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
000170144 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000170144 700__ $$aChen, M.
000170144 700__ $$aMantovani, F.
000170144 700__ $$aSerafini, A.
000170144 700__ $$aStrati, V.
000170144 700__ $$0(orcid)0009-0006-7877-2985$$aApilluelo, J.$$uUniversidad de Zaragoza
000170144 700__ $$aAsquith, L.
000170144 700__ $$aBeney, J. L.
000170144 700__ $$aBezerra, T. J. C.
000170144 700__ $$aBongrand, M.
000170144 700__ $$aBourgeois, C.
000170144 700__ $$aBreton, D.
000170144 700__ $$aBriere, M.
000170144 700__ $$aBusto, J.
000170144 700__ $$aCadiou, A.
000170144 700__ $$aCalvo, E.
000170144 700__ $$aChaumat, V.
000170144 700__ $$aChauveau, E.
000170144 700__ $$aCattermole, B. J.
000170144 700__ $$aChimenti, P.
000170144 700__ $$aDelafosse, C.
000170144 700__ $$ade Kerret, H.
000170144 700__ $$aDusini, S.
000170144 700__ $$aEarle, A.
000170144 700__ $$aFrigerio-Martins, C.
000170144 700__ $$aGalán, J.
000170144 700__ $$0(orcid)0000-0002-7399-7353$$aGarcía, J. A.$$uUniversidad de Zaragoza
000170144 700__ $$aGazzini, R.
000170144 700__ $$aGibson-Foster, A.
000170144 700__ $$aGallas, A.
000170144 700__ $$aGirard-Carillo, C.
000170144 700__ $$aGriffith, W. C.
000170144 700__ $$aHaddad, F.
000170144 700__ $$aHartnell, J.
000170144 700__ $$aHourlier, A.
000170144 700__ $$aHull, G.
000170144 700__ $$aIrastorza, I. G.
000170144 700__ $$aKoch, L.
000170144 700__ $$aLaniéce, P.
000170144 700__ $$aLe Du, J. F.
000170144 700__ $$aLefebvre, C.
000170144 700__ $$aLefevre, F.
000170144 700__ $$aLegrand, F.
000170144 700__ $$aLoaiza, P.
000170144 700__ $$aLock, J. A.
000170144 700__ $$0(orcid)0000-0002-5352-1884$$aLuzón, G.$$uUniversidad de Zaragoza
000170144 700__ $$aMaalmi, J.
000170144 700__ $$aMarquet, C.
000170144 700__ $$aMartínez, M.
000170144 700__ $$aMathon, B.
000170144 700__ $$aMénard, L.
000170144 700__ $$aNavas-Nicolás, D.
000170144 700__ $$aNunokawa, H.
000170144 700__ $$aOchoa-Ricoux, J. P.
000170144 700__ $$aObolensky, M.
000170144 700__ $$aPalomares, C.
000170144 700__ $$aPillot, P.
000170144 700__ $$aPorter, J. C. C.
000170144 700__ $$aPravikoff, M. S.
000170144 700__ $$aRamarijaona, H.
000170144 700__ $$aRoche, M.
000170144 700__ $$aRosier, P.
000170144 700__ $$aRoskovec, B.
000170144 700__ $$0(orcid)0000-0002-7552-1228$$aSarsa, M. L.$$uUniversidad de Zaragoza
000170144 700__ $$aShorrock, W.
000170144 700__ $$aSimard, L.
000170144 700__ $$aSteiger, H. Th. J.
000170144 700__ $$aStocco, D.
000170144 700__ $$aStutzmann, J. S.
000170144 700__ $$aSuekane, F.
000170144 700__ $$aTunc, A.
000170144 700__ $$aVerdier, M. -A.
000170144 700__ $$aVerdugo, A.
000170144 700__ $$aViaud, B.
000170144 700__ $$aWakely, S. M.
000170144 700__ $$aYermia, F.
000170144 7102_ $$12004$$2390$$aUniversidad de Zaragoza$$bDpto. Física Teórica$$cÁrea Física Atóm.Molec.y Nucl.
000170144 773__ $$g9, 1 (2026), [14 pp.]$$tCommunications Physics$$x2399-3650
000170144 8564_ $$s1998594$$uhttps://zaguan.unizar.es/record/170144/files/texto_completo.pdf$$yVersión publicada
000170144 8564_ $$s2911138$$uhttps://zaguan.unizar.es/record/170144/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000170144 909CO $$ooai:zaguan.unizar.es:170144$$particulos$$pdriver
000170144 951__ $$a2026-03-26-14:30:24
000170144 980__ $$aARTICLE