Searching for CP Violation in DUNE and Sterile Neutrinos in MicroBooNE

Fatih Bay

TUBITAK, Ankara, Turkey

Özet: Neutrino Oscillations have been firmly established by experiments conducted in the last two decades with solar, atmospheric, accelerator and reactor neutrinos leading to the determination of the neutrino mass-eigenvalue differences (squared) and of the three angles of the Pontecorvo-Maki-Nakagawa-Sakata (PMNS) mixing matrix. Outstanding issues are still to be settled such as the possible existence of CP violation in the leptonic sector and the hierarchy of the neutrino mass eigenvalues. In addition, some anomalies observed seem to give hints for a required extension of the minimal PMNS oscillation scheme by invoking the existence of still undetected sterile neutrinos. The Liquid Argon Time Projection Chamber (LAr-TPC) is a prime candidate detector for future neutrino oscillation experiments, large-mass neutrino observatories and proton decay searches. The Deep Underground Neutrino Experiment (DUNE) using the LAr-TPC technology enables a rich physics program by focusing on the neutrino oscillation measurements, proton decay studies and Supernova burst observations. On the other hand, The MicroBooNE experiment also employs a large LAr-TPC technology with 85-ton active mass, placed on the Booster Neutrino Beam at Fermilab in Batavia, Illinois in the USA. MicroBooNE which started taking data in October 2015 provides an investigation of the MiniBooNE low-energy excess and neutrino-argon cross section measurements. Another important purpose of MicroBooNE is to obtain experience with the operation and calibration of large liquid argon time projection chamber for the realisation of the DUNE experiment at Fermilab. In this talk, the DUNE and MicroBooNE experiments will be presented in detail after giving a brief introduction to neutrino oscillation physics.