3-9 March 2020
HSE Study Center “Voronovo”
Europe/Moscow timezone

DsTau (NA65): Study of tau neutrino production at the CERN-SPS

5 Mar 2020, 20:00
HSE Study Center “Voronovo”

HSE Study Center “Voronovo”

Voronovskoe, Moscow Russian Federation
Board: 17
Poster [portrait A1 or landscape A0] Young Scientist Forum Poster Session


Ms Elizaveta Sitnikova (JINR)


The uncertainty in tau neutrino production in high energy proton interactions has been the largest uncertainty in current and future tau neutrino measurements, preventing a precise test of lepton universality in neutrino scattering. DsTau (NA65) at the CERN-SPS is a recently approved experiment, which aims to study the problematic tau neutrino production. The main source of tau neutrino production is through the decay of Ds mesons, namely $D_s \rightarrow \tau \nu_\tau$ and then $\tau \rightarrow \nu_\tau X$. There is no data on the differential production cross section of Ds in proton-nucleus interactions, which leads to a large uncertainty of tau neutrino cross section measurements. DsTau addresses this issue and will provide essential inputs for future tau neutrino experiments. A large amount of charmed particles decay events ($\sim 10^5$) is expected to be detected as well, providing a possibility for interesting by-product studies, in particular a search for intrinsic charm in a proton. The experimental method is based on a use of high resolution emulsion detectors for effective registration of events with short lived particle decays. Here I present the motivation of the study, details of the experimental technique and the first results of the analysis of the data collected during test runs.

Primary author

Ms Elizaveta Sitnikova (JINR)

Presentation Materials

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