S. Navas

Nucleon decay searches with large liquid Argon TPC detectors at shallow depths: atmospheric neutrinos and cosmogenic backgrounds

Grand Unification of the strong, weak and electromagnetic interactions into a single unified gauge group is an extremely appealing idea which has been vigorously pursued theoretically and experimentally for many years. The detection of proton or bound-neutron decays would represent its most direct experimental evidence. In this context, we studied the physics potentialities of very large underground Liquid Argon Time Projection Chambers (LAr TPC). We carried out a detailed simulation of signal efficiency and background sources, including atmospheric neutrinos and cosmogenic backgrounds. We point out that a liquid Argon TPC, offering good granularity and energy resolution, low particle detection threshold, and excellent background discrimination, should yield very good signal over background ratios in many possible decay modes, allowing to reach partial lifetime sensitivities in the range of

Statistical Pattern Recognition: Application to

10^{34}-10^{35}

\nu_{\mu}\to\nu_{\tau}

years with exposures up to 1000 kton

Oscillation Searches Based on Kinematic Criteria

\times

Statistical pattern recognition: Application to nu(mu) ---> nu(tau) oscillation searches based on kinematic criteria

year, often in quasi-background-free conditions optimal for discoveries at the few events level, corresponding to atmospheric neutrino background rejections of the order of

Search for a diffuse flux of cosmic neutrinos with the ANTARES telescope

10^5

Review of Particle Physics (2008)

. Multi-prong decay modes like e.g.

Observation of coherent neutrino-nucleus elastic scattering at a beta beam

p\to \mu^- \pi^+ K^+

Status of the Silicon Photomultiplier Telescope FAMOUS for the Fluorescence Detection of UHECRs

or