2025/12/01 by van der Marck, Karel, Cheianov, Vadim
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Instrumentation and Detectors (physics.ins-det) #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Other Condensed Matter (cond-mat.other) #Strongly Correlated Electrons (cond-mat.str-el)
paper · doi:10.48550/arxiv.2512.01752
Measuring the electron neutrino mass is a long-standing objective and requires a high energy resolution of certain β-decay experiments, as well as a visible cosmic neutrino background (CνB) spectrum. Many quantum mechanical and chemical effects could potentially impair the required resolution/visibility, e.g., the Coulomb interactions between the electrons in the \beta-decaying impurity and in the solid-state environment. We analyze the effect when hybridization is suppressed completely using a dielectric spacer, and also when hybridization is present up to the lowest nontrivial order in perturbation theory.