New experiment could finally reveal why matter and antimatter aren't equal
European scientists are building a neutrino detector that could measure a fundamental asymmetry in physics with unprecedented precision within a decade. The finding could reshape our understanding of the universe's origins and has implications for future particle physics research funding and facility planning.
Originaltitel: The ESS<em>𝜈</em>SB+ Project
<p>The European Spallation Source neutrino Super Beam (ESS<em>𝜈</em>SB) is a long-baseline neutrino project that will measure the CP-violation in the leptonic sector at the second, rather than the first, oscillation maximum, where the sensitivity of the experiment is ∼3 times higher. The physics simulations have shown that the ESS<em>𝜈</em>SB, after 10 years of data taking, will be able to cover more than 70% of the CP-violating phase, <em>δ<sub>CP</sub></em>, parameterrange with 5 σ C.L. to reject the no-CP-violation hypothesis. The expected measurement error of <em>δ<sub>CP</sub></em> is smaller than 8° for all <em>δ<sub>CP</sub></em> values, making it the most precise proposed experiment in the field by a large margin. The extension project, ESS<em>𝜈</em>SB+ to be performed between 2023 and 2026, aims in measuring the neutrino-nucleus cross-section (the dominant term of the systematic uncertainty) in the energy range of 0.2 – 0.6 GeV, using a Low Energy nuSTORM (LEnuSTORM) and a Low Energy Monitored Neutrino Beam (LEMNB) facilities.</p>