ARNOLD, R.; AUGIER, C.; BARABASH, A.S.; BASHARINA-FRESHVILLE, A.; BLONDEL, S.; BLOT, S.; BONGRAND, M.; BOURSETTE, D.; BRUDANIN, V.; BUSTO, J.; CAFFREY, A.J.; CALVEZ, S.; CASCELLA, M.; CERNA, C.; CESAR, J.P.; CHAPON, A.; CHAUVEAU, E.; CHOPRA, A.; DAWSON, L.; DUCHESNEAU, D.; DURAND, D.; DVORNICKÝ, R.; EGOROV, V.; EURIN, G.; EVANS, J.J.; FAJT, L.; FILOSOFOV, D.; FLACK, R.; GARRIDO, X.; GIRARD-CARILLO, C.; GÓMEZ, H.; GUILLON, B.; GUZOWSKI, P.; HODÁK, R.; HUBER, A.; HUBERT, P.; HUGON, C.; JULLIAN, S.; KOCHETOV, O.; KONOVALOV, S.I.; KOVALENKO, V.; LALANNE, D.; LANG, K.; LEMIÈRE, Y.; LE NOBLET, T.; 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.; PATRICK, C.; PERROT, F.; PIN, A.; PIQUEMAL, F.; POVINEC, P.; PRIDAL, P.; RAMACHERS, Y.A.; REMOTO, A.; REYSS, J.L.; RIDDLE, C.L.; RUKHADZE, E.; SAAKYAN, R.; SALAMATIN, A.; SALAZAR, R.; SARAZIN, X.; SEDGBEER, J.; SHITOV, Yu.; SIMARD, L.; SIMKOVIC, F.; SMETANA, A.; SMOLEK, K.; SMOLNIKOV, A.; SÖLDNER-REMBOLD, S.; SOULÉ, B.; STEKL, 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.; VANUSHIN, I.; VILELA, C.; VOROBEL, V.; WATERS, D.; XIE, F.; ZUKAUSKAS, A.

doi:10.1140/epjc/s10052-019-6948-4

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ARNOLD, R.
Institut Pluridisciplinaire Hubert Curien [IPHC]

AUGIER, C.
Laboratoire de l'Accélérateur Linéaire [LAL]

BARABASH, A.S.

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European Physical Journal C: Particles and Fields. 2019, vol. 79, n° 5, p. 440

Springer Verlag (Germany)

Résumé en anglais

The full data set of the NEMO-3 experiment has been used to measure the half-life of the two-neutrino double beta decay of$^{100}$ Mo to the ground state of$^{100}$ Ru, $T_{1/2} = \left[ 6.81 \pm 0.01\,\left( \text{ stat }\right) ^{+0.38-0.40}\,\left( \text{ syst }\right) \right] \times 10^{18}$ year. The two-electron energy sum, single electron energy spectra and distribution of the angle between the electrons are presented with an unprecedented statistics of $5\times 10^5$ events and a signal-to-background ratio of $\sim $ 80. Clear evidence for the Single State Dominance model is found for this nuclear transition. Limits on Majoron emitting neutrinoless double beta decay modes with spectral indices of $\mathrm{n}=2,3,7$ , as well as constraints on Lorentz invariance violation and on the bosonic neutrino contribution to the two-neutrino double beta decay mode are obtained.< Réduire

Mots clés en anglais

double-beta decay: (0neutrino)

electron: energy spectrum

nucleus: transition

invariance: Lorentz

violation: Lorentz

decay modes

ground state

statistics

spectral

Majoron

S029MT

S076H2N

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Detailed studies of $^{100}$Mo two-neutrino double beta decay in NEMO-3

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