Abstract
Neutrino-nucleus reactions cross sections, obtained for neutrino energies in the range $\varepsilon_{\nu}\leq 100-120$ MeV (low- and intermediate-energy range), which refer to promising neutrino detection targets of current terrestrial neutrino experiments, are presented and discussed. At first, we evaluated original cross sections for elastic scattering of neutrinos produced from various astrophysical and laboratory neutrino sources with the most abundant Cd isotopes $^{112}$Cd, $^{114}$Cd and $^{116}$Cd. These isotopes constitute the main material of the COBRA detector aiming to search for neutrinoless double beta decay events and neutrino-nucleus scattering events at the Gran Sasso laboratory (LNGS). The coherent $\nu$-nucleus reaction channel addressed with emphasis here, dominates the neutral current $\nu$-nucleus scattering, events of which have only recently been observed for a first time in the COHERENT experiment at Oak Ridge. Subsequently, simulated $\nu$-signals expected to be recorded at Cd detectors are derived through the application of modern simulation techniques and employment of reliable neutrino distributions of astrophysical $\nu$-sources (as the solar, supernova and Earth neutrinos), as well as laboratory neutrinos (like the reactor neutrinos, the neutrinos produced from pion-muon decay at rest and the $\beta$-beam neutrinos produced from the acceleration of radioactive isotopes at storage rings as e.g. at CERN).
Highlights
In recent interdisciplinary investigations in nuclear, particle and astro-particle physics, the interactions of neutrinos with matter play key role in understanding deeply the underlying physics
We present original neutrino-nucleus cross sections obtained with realistic nuclear structure calculations for scattering of low and intermediate energy neutrinos off the 112,114,116Cd isotopes
Laboratory neutrino beams are important tools for studying standard and nonstandard neutrino physics while astrophysical neutrinos are key particles in investigating the structure and evolution of stars as well to deepen our knowledge on the fundamental neutrinonucleus interactions
Summary
In recent interdisciplinary investigations in nuclear, particle and astro-particle physics, the interactions of neutrinos with matter play key role in understanding deeply the underlying physics. In this work we pay special attention on the coherent elastic neutrino-nucleus scattering (CEvNS) that is a process in which the target nucleus recoils coherently via a combined neutral current exchange width with neutrinos or anti-neutrinos This process is well predicted by the standard model of the electroweak interactions and has large cross sections (10−39 cm in the neutrino-energy region (εν ≤50 MeV). (sections 4 and 5), a description of the main characteristics of the low and intermediate energy neutrino sources addressed here are briefly summarized and folded cross sections as well as event rates for neutral current neutrino scattering off the 112Cd, 114Cd, and 116Cd isotopes are presented and discussed. (section 6), the main conclusions of the present work are extracted
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