Neutrinos from stored muons

Abstract

The nuSTORM facility will provide νe (ν¯e) and νµ (ν¯ µ) beams from the decay of low energy muons confined within a storage ring. The instrumentation of the ring, combined with the excellent knowledge of muon decay, will make it possible to determine the neutrino flux at the %-level or better. The neutrino and anti-neutrino event rates are such that the nuSTORM facility, serving a suite of near detectors, will allow measurements of the νeA (ν¯eA) and νµA (ν¯ µA) cross sections to be made with the precision required to enhance the sensitivity of the next generation of long-baseline neutrino-oscillation experiments thereby enhancing their discovery potential. By delivering precise cross section measurements with a pure weak probe nuSTORM has the potential to make measurements important to understanding the physics of nuclei. The precise knowledge of the initial neutrino flux also makes it possible to deliver uniquely sensitive light sterile-neutrino searches. The concept for the nuSTORM facility will be presented together with an evaluation of its performance. The status of the planned consideration of nuSTORM at CERN in the context of the Physics Beyond Colliders Study Group will be summarised.