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Simultaneous measurements of the $\beta$ -neutrino angular correlation in $^{32}$Ar pure Fermi and pure Gamow-Teller transitions using $\beta$ -proton coincidences

dc.contributor.authorARAUJO-ESCALONA, V.
dc.contributor.authorATANASOV, D.
hal.structure.identifierÉcole Nationale Supérieure d'Ingénieurs de Caen [ENSICAEN]
dc.contributor.authorFLÉCHARD, X.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorALFAURT, P.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorASCHER, P.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorBLANK, B.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorDAUDIN, L.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorGERBAUX, M.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorGIOVINAZZO, J.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorGRÉVY, S.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorKURTUKIAN-NIETO, T.
hal.structure.identifierÉcole Nationale Supérieure d'Ingénieurs de Caen [ENSICAEN]
dc.contributor.authorLIÉNARD, E.
hal.structure.identifierÉcole Nationale Supérieure d'Ingénieurs de Caen [ENSICAEN]
dc.contributor.authorQUÉMÉNER, G.
dc.contributor.authorSEVERIJNS, N.
dc.contributor.authorVANLANGENDONCK, S.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorVERSTEEGEN, M.
dc.contributor.authorZAKOUCKY, D.
dc.date.issued2020
dc.description.abstractEnWe report first time measurements of the beta-neutrino angular correlation based on the kinetic energy shift of protons emitted in parallel or anti-parallel directions with respect to the positron in the beta decay of $^{32}$Ar. This proof of principle experiment provided simultaneous measurements for the superallowed 0$^+$~$\rightarrow$~0$^+$ transition followed by a 3356~keV proton emission and for a Gamow-Teller transition followed by a 2123~keV proton emission. The results, respectively ${\tilde a_{\beta\nu}}=1.01(3)_{(stat)}(2)_{(syst)}$ and ${\tilde a_{\beta\nu}}=-0.22(9)_{(stat)}(2)_{(syst)}$, are found in agreement with the Standard Model. A careful analysis of the data shows that future measurements can reach a precision level of 10$^{-3}$ for both pure Fermi and pure Gamow-Teller decay channels, providing new constraints on both scalar and tensor weak interactions.
dc.description.sponsorshipEtudes de l'interaction faible avec la décroissance de 32Ar - ANR-18-CE31-0004
dc.language.isoen
dc.subject.enElectroweak Interaction
dc.subject.enSymmetries
dc.subject.enenergy: kinetic
dc.subject.enp: energy
dc.subject.enGamow-Teller transition
dc.subject.enangular correlation
dc.subject.ensemileptonic decay
dc.subject.enweak interaction
dc.subject.ensemiconductor detector
dc.subject.enargon
dc.subject.enexperimental results
dc.title.enSimultaneous measurements of the $\beta$ -neutrino angular correlation in $^{32}$Ar pure Fermi and pure Gamow-Teller transitions using $\beta$ -proton coincidences
dc.typeArticle de revue
dc.identifier.doi10.1103/PhysRevC.101.055501
dc.subject.halPhysique [physics]/Physique Nucléaire Expérimentale [nucl-ex]
dc.identifier.arxiv1906.05135
bordeaux.journalPhys.Rev.C
bordeaux.page055501
bordeaux.volume101
bordeaux.issue5
bordeaux.peerReviewedoui
hal.identifierhal-02159729
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02159729v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Phys.Rev.C&rft.date=2020&rft.volume=101&rft.issue=5&rft.spage=055501&rft.epage=055501&rft.au=ARAUJO-ESCALONA,%20V.&ATANASOV,%20D.&FL%C3%89CHARD,%20X.&ALFAURT,%20P.&ASCHER,%20P.&rft.genre=article


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