25–30 May 2025
Daejeon Convention Center (DCC)
Asia/Seoul timezone

Status of DANSS experiment

29 May 2025, 16:30
15m
Room 3: 2F #204-205 (DCC)

Room 3: 2F #204-205

DCC

Contributed Oral Presentation Neutrinos and Nuclei Parallel Session

Speaker

Mark Shirchenko (Joint Institute for Nuclear Research)

Description

The DANSS experiment at Kalininskaya NPP is running for already 8 years since
April 2016. The largest in the world in the single experiment statistics of 9 million
inverse beta decay events is collected. The data sample covers 4 full
cycles of the industrial power recator. DANSS experimental program includes both
a search for physics beyond the Standard Model, like sterile neutrinos or large extra
dimensions, and applied studies connected to reactor monitoring using electron
antineutrino flux. The model independent exclusion area in the sterile neutrino parameter
space for 3+1 hypothesis extends till sin$^2$2θ = 0.004 for Δm$^2$ = 0.9 eV$^2$,
where sensitivity of the experiment is the best. Our data show presence of antineutrinos
with energies above 10 MeV in the reactor spectrum with significance of 6.8 σ.
Along with ongoing statistics collection DANSS is preparing for an upgrade, which
shall significantly improve its energy resolution and also increase the fiducial volume.
The talk covers recent analysis results and the upgrade status.

Primary author

Mark Shirchenko (Joint Institute for Nuclear Research)

Presentation materials