000168133 001__ 168133
000168133 005__ 20260127160850.0
000168133 0247_ $$2doi$$a10.1007/JHEP12(2025)009
000168133 0248_ $$2sideral$$a147701
000168133 037__ $$aART-2025-147701
000168133 041__ $$aeng
000168133 100__ $$aAltenmüller, K.
000168133 245__ $$aSearch for solar axions produced through the axion-electron coupling gae using a new GridPix detector at CAST
000168133 260__ $$c2025
000168133 5060_ $$aAccess copy available to the general public$$fUnrestricted
000168133 5203_ $$aWe present a search for solar axions produced through the axion-electron coupling (gae) using data from a novel 7-GridPix detector installed at the CERN Axion Solar Telescope (CAST). The detector, featuring ultra-thin silicon nitride windows and multiple veto systems, collected approximately 160 hours of solar tracking data between 2017–2018. Using machine learning techniques and the veto systems, we achieved a background rate of 1.06 × 10−5 keV−1 cm−2 s−1 at a signal efficiency of about 80% in the 0.2 to 8 keV range. Analysis of the data yielded no significant excess above background, allowing us to set a new upper limit on the product of the axion-electron and axion-photon couplings of gae · gaγ < 7.35 × 10−23 GeV−1 at 95% confidence level for axion masses below 10 meV. This result improves upon the previous best helioscope limit and demonstrates the potential of GridPix technology for rare event searches. Additionally, we derived a limit on the axion-photon coupling of gaγ < 9.0 × 10−11 GeV−1 at 95% CL, which, while not surpassing CAST’s best limit, provides complementary constraints on axion models.
000168133 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttps://creativecommons.org/licenses/by/4.0/deed.es
000168133 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000168133 700__ $$aAnastassopoulos, V.
000168133 700__ $$aArguedas-Cuendis, S.
000168133 700__ $$aAune, S.
000168133 700__ $$aBaier, J.
000168133 700__ $$aBarth, K.
000168133 700__ $$aBräuninger, H.
000168133 700__ $$aCantatore, G.
000168133 700__ $$aCaspers, F.
000168133 700__ $$0(orcid)0000-0003-3532-7540$$aCastel, J. F.$$uUniversidad de Zaragoza
000168133 700__ $$aÇetin, S. A.
000168133 700__ $$aChristensen, F.
000168133 700__ $$aCogollos, C.
000168133 700__ $$0(orcid)0000-0002-8921-910X$$aDafni, T.$$uUniversidad de Zaragoza
000168133 700__ $$aDavenport, M.
000168133 700__ $$aDecker, T. A.
000168133 700__ $$aDesch, K.
000168133 700__ $$aDíez-Ibáñez, D.$$uUniversidad de Zaragoza
000168133 700__ $$aDöbrich, B.
000168133 700__ $$aFerrer-Ribas, E.
000168133 700__ $$aFischer, H.
000168133 700__ $$aFunk, W.
000168133 700__ $$0(orcid)0000-0001-7529-9834$$aGalán, J.
000168133 700__ $$aGarcía, J. A.
000168133 700__ $$aGardikiotis, A.
000168133 700__ $$aGiomataris, I.
000168133 700__ $$aGolm, J.
000168133 700__ $$aHailey, C. H.
000168133 700__ $$aHasinoff, M. D.
000168133 700__ $$aHoffmann, D. H. H.
000168133 700__ $$aIrastorza, I. G.
000168133 700__ $$aJacoby, J.
000168133 700__ $$aJakobsen, A. C.
000168133 700__ $$aJakovcic, K.
000168133 700__ $$aKaminski, J.
000168133 700__ $$aKaruza, M.
000168133 700__ $$aKostoglou, S.
000168133 700__ $$aKrieger, C.
000168133 700__ $$aLakic, B.
000168133 700__ $$aLaurent, J. M.
000168133 700__ $$0(orcid)0000-0002-5352-1884$$aLuzón, G.$$uUniversidad de Zaragoza
000168133 700__ $$aMalbrunot, C.
000168133 700__ $$0(orcid)0000-0001-6213-5590$$aMargalejo, C.$$uUniversidad de Zaragoza
000168133 700__ $$aMaroudas, M.
000168133 700__ $$aMiceli, L.
000168133 700__ $$0(orcid)0000-0002-9951-8680$$aMirallas, H.$$uUniversidad de Zaragoza
000168133 700__ $$aNavarro, P.
000168133 700__ $$0(orcid)0000-0002-7990-2060$$aObis, L.
000168133 700__ $$aÖzbey, A.
000168133 700__ $$aÖzbozduman, K.
000168133 700__ $$aPapaevangelou, T.
000168133 700__ $$aPérez, O.
000168133 700__ $$aPivovaroff, M. J.
000168133 700__ $$aRosu, M.
000168133 700__ $$0(orcid)0000-0002-2417-7121$$aRuiz-Chóliz, E.
000168133 700__ $$0(orcid)0000-0002-3253-7027$$aRuz, J.
000168133 700__ $$aSchiffer, T.
000168133 700__ $$aSchmidt, S.
000168133 700__ $$aSchumann, M.
000168133 700__ $$aSemertzidis, Y. K.
000168133 700__ $$aSolanki, S. K.
000168133 700__ $$aStewart, L.
000168133 700__ $$aVafeiadis, T.
000168133 700__ $$0(orcid)0000-0002-5850-5517$$aVogel, J. K.
000168133 700__ $$aZioutas, K.
000168133 7102_ $$12004$$2X$$aUniversidad de Zaragoza$$bDpto. Física Teórica$$cProy. investigación HCA
000168133 7102_ $$12004$$2390$$aUniversidad de Zaragoza$$bDpto. Física Teórica$$cÁrea Física Atóm.Molec.y Nucl.
000168133 773__ $$g2025, 12 (2025)$$pJ. high energy phys.$$tJournal of High Energy Physics$$x1126-6708
000168133 8564_ $$s6757761$$uhttps://zaguan.unizar.es/record/168133/files/texto_completo.pdf$$yVersión publicada
000168133 8564_ $$s1885538$$uhttps://zaguan.unizar.es/record/168133/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000168133 909CO $$ooai:zaguan.unizar.es:168133$$particulos$$pdriver
000168133 951__ $$a2026-01-27-15:01:00
000168133 980__ $$aARTICLE