Jul 4 – 11, 2018
COEX, SEOUL
Asia/Seoul timezone

Study of tau-neutrino production at the CERN SPS

Jul 6, 2018, 9:15 AM
15m
202 (COEX, Seoul)

202

COEX, Seoul

Parallel Neutrino Physics Neutrino Physics

Speaker

Tomoko Ariga (Kyushu University)

Description

At the CERN SPS, the DsTau project has been proposed to study tau-neutrino production aiming at providing important information for future $\nu_\tau$ measurements. Precise measurement of the $\nu_\tau$ cross section would enable a search for new physics effects in $\nu_\tau$-nucleon CC interactions. It also has practical implications for neutrino oscillation experiments. The dominant source of $\nu_\tau$ is the sequential decay of $D_s$ mesons produced by proton interactions, whose uncertainty dominates current uncertainty in the $\nu_\tau$ cross section measurement. The project aims at reducing the systematic uncertainty from about 50% to 10% by measuring the $D_s$ differential production cross section. For this purpose, emulsion detectors with a nanometre-precision readout will be used to detect small kinks of the $D_s \rightarrow \tau$ decay. An emulsion detector has a position resolution of 50 nm, allowing for the detection of $D_s \rightarrow \tau \rightarrow X$ double kinks in a few mm range. Results from the beam tests in 2016-2017 will be presented together with a prospect for a pilot run in 2018 and a physics run in 2021.

Primary author

Tomoko Ariga (Kyushu University)

Presentation materials