ARNOLD, R.; AUGIER, C.; BAKER, J.; BARABASH, A.; BROUDIN, G.; BRUDANIN, V.; CAFFREY, A.J.; CAURIER, E.; EGOROV, V.; ERRAHMANE, K.; ETIENVRE, A.I.; GUYONNET, J.L.; HUBERT, F.; HUBERT, P.; JOLLET, C.; JULLIAN, Sophie; KOCHETOV, O.; KOVALENKO, V.; KONOVALOV, S.; LALANNE, D.; LECCIA, F.; LONGUEMARE, C.; LUTTER, G.; MARQUET, Catherine; MAUGER, F.; NOWACKI, F.; OHSUMI, H.; PIQUEMAL, F.; REYSS, J.L.; SAAKYAN, R.; SARAZIN, X.; SIMARD, L.; SIMKOVIC, F.; SHITOV, Yu.; SMOLNIKOV, A.; STEKL, I.; SUHONEN, J.; SUTTON, C.S.; SZKLARZ, G.; THOMAS, J.; TIMKIN, V.; TRETYAK, V.; UMATOV, V.; VALA, L.; VANUSHIN, I.; VASILYEV, V.; VOROBEL, V.; VYLOV, Ts.

doi:10.1103/PhysRevLett.95.182302

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ARNOLD, R.
Institut de Recherches Subatomiques [IReS]

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

BAKER, J.

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Physical Review Letters. 2005, vol. 95, p. 182302

American Physical Society

Résumé en anglais

The NEMO 3 detector, which has been operating in the Frejus underground laboratory since February 2003, is devoted to the search for neutrinoless double beta decay ($\beta\beta0\nu$). Half-lives of the two neutrino double beta decays ($\beta\beta2\nu$) have been measured for $^{100}$Mo and $^{82}$Se. After 389 effective days of data collection from February 2003 until September 2004 (Phase I), no evidence for neutrinoless double beta decay was found from $\sim$ 7kg of $^{100}$Mo and $\sim$1 kg of $^{82}$Se. The corresponding lower limits for the half-lives are 4.6 $\times$ 10$^{23}$ years for $^{100}$Mo and 1.0 $\times10^{23}$ years for $^{82}$Se (90\% C.L.). Depending on the nuclear matrix elements calculation, limits for the effective Majorana neutrino mass are < 0.7-2.8 eV for $^{100}$Mo and < 1.7-4.9 eV for $^{82}$Se< Réduire

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First results of the search for neutrinoless double beta decay with the NEMO 3 detector

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