Neutrino Lorentz invariance violation from cosmic fields

• DOI: 10.1016/j.physletb.2024.138687
• Publication Date: 2024-05-06T15:29:14Z
• Authors: Rubén Cordero; Luis A. Delgadillo
• Keywords: High Energy Physics - Phenomenology; High Energy Physics - Phenomenology (hep-ph); Physics; QC1-999; FOS: Physical sciences

From a cosmological perspective, scalar fields are well-motivated dark matter and dark energy candidates. Several possibilities of neutrino couplings with a time-varying cosmic field have been investigated in the literature. In this work, we present a framework in which violations of Lorentz invariance (LIV) and $CPT$ symmetry in the neutrino sector could arise from an interaction among neutrinos with a time-varying scalar field. Furthermore, some cosmological and phenomenological aspects and constraints concerning this type of interaction are discussed. Potential violations of Lorentz and $CPT$ symmetries at present and future neutrino oscillation experiments such as IceCube and KM3NeT can probe this scenario.<br/>17 pages, 2 appendices; v2: additional references; v3: 19 pages, 2 appendices; four additional references, one table. Matches version to be published in PLB<br/>