# IOP 2014 Joint HEPP & APP Group Meeting

Apr 7 – 9, 2014
Royal Holloway, University of London
Europe/London timezone
Institute of Physics 2014 Joint High Energy Particle Physics and Astro Particle Physics Groups Annual Meeting

## Results of the NEMO-3 experiment and Low-radioactivity measurements for SuperNEMO with the BiPo detector

Apr 8, 2014, 1:15 PM
15m
Room E (Windsor Building)

### Room E

#### Windsor Building

contributed talk The Neutrino Sector

### Speaker

Mr Guillaume Eurin (University College London (UK))

### Description

The main goal of the SuperNEMO collaboration is to search for neutrinoless double-$\beta$ decay. This would prove that the neutrino is a Majorana particle ($\nu$ = $\overline{\nu}$). Today the best lower limits on half-lives of this process are set around 10$^{24}$ - 10$^{26}$ years as obtained by the NEMO-3 experiment (for the 2$\beta$ isotope $^{100}$Mo) and other experiments. Several analyses are still ongoing, studying the different isotopes used for NEMO-3: $^{100}$Mo, $^{82}$Se, $^{96}$Zr, $^{150}$Nd, $^{48}$Ca, $^{116}$Cd. SuperNEMO is the next generation experiment based on the NEMO-3 tracker-calorimeter detection principle. Given the rareness of the processes studied here, the lowest possible levels of background are required. These levels are too low to be reached using non destructive techniques such as High Purity Germanium detectors. A new type of detector has been constructed, BiPo-3, targeting activities lower than can be achieved through $\gamma$ spectrometry. This detector is designed to measure contaminations in $^{208}$Tl (around few $\mu$Bq/kg) and $^{214}$Bi (few dozen $\mu$Bq/kg) in thin materials. BiPo-3 has been fully operational at the Laboratorio Subterr$\acute{a}$neo de Canfranc (LSC, Spain) since January, 2013. The NEMO-3 experiment, the status of the current analysis on $^{96}$Zr and the results on $^{100}$Mo and $^{82}$Se will be presented. The BiPo-3 detector will be described along with the radiopurity requirements for SuperNEMO source foils measurements.

### Primary author

Mr Guillaume Eurin (University College London (UK))

 Slides