Probing new physics models of neutrinoless double beta decay with SuperNEMO

Université de Bordeaux, Centre d’Etudes Nucléaires de Bordeaux Gradignan, UMR 5797, 33175 Gradignan, France; CNRS/IN2P3, Centre d’Etudes Nucléaires de Bordeaux Gradignan, UMR 5797, 33175 Gradignan, France
European Physical Journal C (Impact Factor: 5.25). 70(4):927-943. DOI: 10.1140/epjc/s10052-010-1481-5
Source: arXiv

ABSTRACT The possibility to probe new physics scenarios of light Majorana neutrino exchange and right-handed currents at the planned
next generation neutrinoless double β decay experiment SuperNEMO is discussed. Its ability to study different isotopes and track the outgoing electrons provides
the means to discriminate different underlying mechanisms for the neutrinoless double β decay by measuring the decay half-life and the electron angular and energy distributions.

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    ABSTRACT: An apparatus developed for the measurement of radon diffusion through thin foils for the SuperNEMO project is presented. The goal of the SuperNEMO collaboration is to construct a new generation detector for the search for neutrinoless double-beta decay (0νββ) with 100 kg of enriched isotope as the source. At present, the collaboration is carrying out R&D in order to suppress significantly intrinsic background including that caused by radon. The description of the apparatus, data analysis method, as well as the results obtained in the measurement of radon diffusion through several types of thin foils, glue and sealant suitable for shielding in the SuperNEMO detector are discussed.
    Journal of Instrumentation 01/2011; 6(01):C01068. · 1.66 Impact Factor
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    ABSTRACT: We discuss neutrinoless double beta decay and lepton flavor violating decays such as $\mu-> e\gamma$ in the colored seesaw scenario. In this mechanism, neutrino masses are generated at one-loop via the exchange of TeV-scale fermionic and scalar color octets. The same particles mediate lepton number and flavor violating processes. We show that within this framework a dominant color octet contribution to neutrinoless double beta decay is possible without being in conflict with constraints from lepton flavor violating processes. We furthermore compare the "direct" color octet contribution to neutrinoless double beta decay with the "indirect" contribution, namely the usual standard light Majorana neutrino exchange. For degenerate color octet fermionic states both contributions are proportional to the usual effective mass, while for non-degenerate octet fermions this feature is not present. Depending on the model parameters, either of the contributions can be dominant.
    Journal of High Energy Physics 01/2012; 2012(5). · 5.62 Impact Factor

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