Non-standard neutrino interactions with matter from physics beyond the Standard Model

By S. Antusch, Jochen P. Baumann, Enrique Fernandez-Martinez. 2008

275 citations recorded by the source corpus.

Abstract We investigate how non-standard neutrino interactions (NSIs) with matter can be generated by new physics beyond the Standard Model (SM) and analyse the constraints on the NSIs in these SM extensions. We focus on tree-level realisations of lepton number conserving dimension 6 and 8 operators which do not induce new interactions of four charged fermions (since these are already quite constrained) and discard the possibility of cancellations between diagrams with different messenger particles to circumvent experimental constraints. The cases studied include classes of dimension 8 operators which are often referred to as examples for ways to generate large NSIs with matter. We find that, in the considered scenarios, the NSIs with matter are considerably more constrained than often assumed in phenomenological studies, at least O ( 10 −2 ) . The constraints on the flavour-conserving NSIs turn out to be even stronger than the ones for operators which also produce interactions of four charged fermions at the same level. Furthermore, we find that in all studied cases the generation of NSIs with matter also gives rise to NSIs at the source and/or detector of a possible future Neutrino Factory.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/4f7b11ca632b2b45d710cf9cae26b3f75f8b0562

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Nuclear and High Energy Physics

1. Y. Farzan
2. M. Tórtola
3. M. Maltoni
4. M. Gonzalez-Garcia
5. Z. Xing
6. T. Schwetz
7. T. Han
8. Jordi Salvado

Citations in the corpus

• Constraints on flavor-diagonal non-standard neutrino interactions from Borexino Phase-II (2019, unknown): “In addition to the SM interactions presented above, many models of physics beyond the Standard Model (BSM) predict new interactions of the neutrinos with the other SM fermions [41–51].”
• Updated constraints on non-standard interactions from global analysis of oscillation data (2018, background): “Of course, for models with a high energy New Physics scale, electroweak gauge invariance generically implies that the NSI-NC parameters are still expected to be subject to tight constraints from charged lepton observables [16, 17], leading to no visible effect in oscillations.”
• Deep Underground Neutrino Experiment (DUNE), Far Detector Technical Design Report, Volume II: DUNE Physics (2020, background): “The phenomenological implications of a non-unitary leptonic mixing matrix have been extensively studied in flavor and electroweak precision observables as well as in the neutrino oscillation phenomenon [363, 141, 364, 365, 366, 367, 368, 369, 370, 371, 372, 373, 374, 375, 376, 377, 378, 379, 360, 53”
• Neutrino non-standard interactions: A status report (2019, background): “Similar stringent constraints can be derived from other rare LFV processes, such as ` → `′γ, as well as from universality in muon and tau decays, assuming CKM unitarity [10].”
• TeV scale see-saw mechanisms of neutrino mass generation, the Majorana nature of the heavy singlet neutrinos and (ββ)0ν-decay (2010, background): “bigger than ∼ 100GeV, the resulting limits on the non-unitarity of the neutrino mixing matrix read [ 49 , 50]:”