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Workpackages

The BSM Nu project focus on topics at the boundaries between different experiments and communities

Workpackages

 
The increasing precision of neutrino oscillation measurements in LBL experiments requires the theoretical development of a new generation of neutrino-nucleus interaction models and their tuning with with a new generation of near detectors. The BSM-Nu group will work on the development of exclusive nuclear models (SuSaV2, INCL), on the tuning of such models with data (in the framework of T2K with ND280 Upgrade detector) and on the design of appropriate detectors to maximize the precision of such tuning for the next generation of experiments (SAND near detector for DUNE and further upgrade of ND280 for HyperKamiokande).
 
 
The combination of oscillation experiments in the next decade will allow to reach unprecedented precision on the measurement of oscillation parameters in the standard PMNS scenario. Moreover, their redundancy will allow to test non-standard scenarios through constraints on unitarity, Non-Standard-Interactions (NSI), CPT violation and others. The BSM-Nu group will work on the determination of the sensitivity of JUNO on mass ordering and unitarity, confronting them with additional constraints coming from LBL (DUNE, T2HK). The constraints on NSI from LBL data will be compared to direct constraints from Coherent-Elastic-Neutrino-Nucleus-Scattering in order to solve possible degeneracies with the measurements of standard PMNS parameters. The impact on the interpretation of 0nubb results will also be investigated, with the ambition of developing a general parametrization for BSM constraints.
 
 
The bolometric detection technique was revealed in the last years as extremely promising for 0νββ investigation and precision low energy Coherent-Elastic-Neutrino-Nucleus Scattering (CENNS) detection. The BSM-Nu group proposes to develop innovative cryogenic solid-state detectors with specific focus on low energy threshold and active rejection of the radioactive background. To address these challenges we propose to undertake an ambitious R&D program on cryogenic detectors, using a specific design of Transition Edge Sensors (TES) coupled to Aluminum superconducting pads in order to maximize their sensitivity to out of equilibrium phonons. Furthermore, new tools will be developed to control the background both in CENNS and 0νββ. Special active shields, surrounding directly the arrays of bolometers and working as an outer veto, will be developed with the purpose of operating them at 10–20 mK. The BSM-Nu group will work on the data taking and analysis of the CUPID-Mo demonstrator. Other demonstrators will be developed to fully study the production chain that starts from natural molybdenum and culminate in large volume enriched single Li1002MoO4 crystals.

 

 

#40 - Last update : 09/12/2020

 

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