ICARUS-NESSiE: a sensitive search for sterile neutrinos at CERN SPS

6th Symposium on Large TPCs for Low Energy Rare Event Detection

Guglielmi, A.^1

INFN, Sezione di Padova, Department of Physics and Astronomy Galileo Galilei, via Marzolo 8, 35131, Padova, Italy^1

关键词: Detection capability;    Experimental bias;    Magnetic spectrometers;    Mixing angle;    Muon neutrino;    Neutrino beams;    Sterile neutrinos;    The standard model;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/460/1/012014/pdf
DOI  :  10.1088/1742-6596/460/1/012014

来源: IOP

【 摘 要 】

A new experimental search for sterile neutrinos beyond the Standard Model at a new CERN-SPS neutrino beam aiming at measuring the electron and muon neutrino events with a Near and Far detectors (1600 and 330 m from the proton target) is presented. The project will exploit the ICARUS T600 LAr-TPC moved from LNGS to the CERN Far position and a new additional LAr-TPC detector, 1/4 of the T600, located in the Near position. Two magnetic spectrometers will be placed downstream of the two LAr-TPC detectors to greatly complement the physics capabilities. Comparing the two detectors, in absence of oscillations, all cross sections and experimental biases cancel out. Any difference of the event distributions at the two locations should be attributed to the possible existence of oscillations, presumably due to additional neutrinos with a mixing angle sin2(2θnew) and a mass squared difference Δm2new larger than the measured for the standard neutrinos. The superior quality of the LAr imaging TPC, in particular its unique electron-π0discrimination allows for full rejection of backgrounds and offers a lossless νe detection capability. The determination of the muon charge with the spectrometers allows for the full separation of νμ from μ and therefore controlling systematics from muon mis-identification mainly at high momenta.