| Autor: |
Collaboration, NEMO-3, Arnold, R., Augier, C., Baker, J. D., 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., Duchesneau, D., Durand, D., Egorov, V., Eurin, G., Evans, J. J., Fajt, L., Filosofov, D., Flack, R., Garrido, X., Gómez, H., Guillon, B., Guzowski, P., Hodák, R., Huber, A., Hubert, P., Hugon, C., Jullian, S., Klimenko, A., Kochetov, O., Konovalov, S. I., Kovalenko, V., Lalanne, D., Lang, K., Lemière, Y., Noblet, T. Le, Liptak, Z., Loaiza, P., Lutter, G., Macko, M., Macolino, C., Mamedov, F., Marquet, C., Mauger, F., Morgan, B., Mott, J., Nemchenok, I., Nomachi, M., Nova, F., Nowacki, F., Ohsumi, H., Pahlka, R. B., Perrot, F., Piquemal, F., Povinec, P., Přidal, P., Ramachers, Y. A., Remoto, A., Reyss, J. L., Richards, B., Riddle, C. L., Rukhadze, E., Saakyan, R., Salazar, R., Sarazin, X., Shitov, Yu., Simard, L., Šimkovic, F., Smetana, A., Smolek, K., Smolnikov, A., Söldner-Rembold, S., Soulé, B., Štekl, I., Suhonen, J., Sutton, C. S., Szklarz, G., Thomas, J., Timkin, V., Torre, S., Tretyak, Vl. I., Tretyak, V. I., Umatov, V. I., Vanushin, I., Vilela, C., Vorobel, V., Waters, D., Žukauskas, A. |
| Rok vydání: |
2016 |
| Předmět: |
|
| Zdroj: |
Phys. Rev. D 95, 012007 (2017) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevD.95.012007 |
| Popis: |
The NEMO-3 experiment measured the half-life of the $2\nu\beta\beta$ decay and searched for the $0\nu\beta\beta$ decay of $^{116}$Cd. Using $410$ g of $^{116}$Cd installed in the detector with an exposure of $5.26$ y, ($4968\pm74$) events corresponding to the $2\nu\beta\beta$ decay of $^{116}$Cd to the ground state of $^{116}$Sn have been observed with a signal to background ratio of about $12$. The half-life of the $2\nu\beta\beta$ decay has been measured to be $ T_{1/2}^{2\nu}=[2.74\pm0.04\mbox{(stat.)}\pm0.18\mbox{(syst.)}]\times10^{19}$ y. No events have been observed above the expected background while searching for $0\nu\beta\beta$ decay. The corresponding limit on the half-life is determined to be $T_{1/2}^{0\nu} \ge 1.0 \times 10^{23}$ y at the $90$ % C.L. which corresponds to an upper limit on the effective Majorana neutrino mass of $\langle m_{\nu} \rangle \le 1.4-2.5$ eV depending on the nuclear matrix elements considered. Limits on other mechanisms generating $0\nu\beta\beta$ decay such as the exchange of R-parity violating supersymmetric particles, right-handed currents and majoron emission are also obtained. |
| Databáze: |
arXiv |
| Externí odkaz: |
|
