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  • Search for Periodic Modulations of the Rate of Double-Beta Decay of \(^{100}\)Mo in the NEMO-3 Detector
    NEMO-3 Collaboration; Arnold, R; Augier, C; Barabash, A S; Basharina-Freshville, A; Blot, S; Bongrand, M; Boursette, D; Breier, R; Busto, J; Caffrey, A J; Calvez, S; Cerna, C; Cesar, J P; Ceschia, M; Chapon, A; Chauveau, E; Chopra, A; Dawson, L; Duchesneau, D; Durand, D; Eurin, G; Evans, J J; Fajt, L; Filosofov, D; Flack, R; Franchini, P; Garrido, X; Girard-Carillo, C; Gómez, H; Guillon, B; Hodák, R; Huber, A; Hubert, P; Hugon, C; Hussain, M H; Jullian, S; Klimenko, A; Kochetov, O; Konovalov, S I; Kovalenko, V; Lalanne, D; Lang, K; Lemière, Y; T Le Noblet; Liptak, Z; Liu, X R; Loaiza, P; Lutter, G; Macko, M; Macolino, C; Mamedov, F; Marquet, C; Mauger, F; Minotti, A; Morgan, B; Mott, J; Nemchenok, I; Nomachi, M; Nova, F; Nowacki, F; Ohsumi, H; Oliviéro, G; Pahlka, R B; Palusova, V; Patrick, C; Perrot, F; Pin, A; Povinec, P; Přidal, P; Quinn, W S; Ramachers, Y A; Remoto, A; Reyss, J L; Riddle, C L; Saakyan, R; Salazar, R; Sarazin, X; Sedgbeer, J; Yu Shitov; Simard, L; Šimkovic, F; Smetana, A; Söldner-Rembold, S; Soulé, B; Štekl, I; Suhonen, J; Sutton, C S; Szklarz, G; Tedjditi, H; Thomas, J; Timkin, V; Torre, S; Tretyak, Vl I; Tretyak, V I; Umatov, V I; Vilela, C; Vorobel, V; Waters, D; Xie, F

    arXiv.org, 11/2020
    Paper, Journal Article

    Double-beta decays of \(^{100}\)Mo from the 6.0195-year exposure of a 6.914 kg high-purity sample were recorded by the NEMO-3 experiment that searched for neutrinoless double-beta decays. These ultra-rare transitions to \(^{100}\)Ru have a half-life of approximately \(7\times10^{18}\) years, and have been used to conduct the first ever search for periodic variations of this decay mode. The Lomb-Scargle periodogram technique, and its error-weighted extension, were employed to look for periodic modulations of the half-life. Monte Carlo modeling was used to study the modulation sensitivity of the data over a broad range of amplitudes and frequencies. Data show no evidence of modulations with amplitude greater than 2.5% in the frequency range of \(0.33225\,{\rm y^{-1}}\) to \(365.25\,{\rm y^{-1}}\).

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