Tensor and scalar interactions of neutrinos may lead to observable neutrino magnetic moments

Xu, Xun-Jie

doi:10.1103/physrevd.99.075003

Cited by 21 publications

(15 citation statements)

References 79 publications

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“…which, together with (44) may lead to proton decay, such that to avoid strong bounds usually baryon number conservation is assumed. 9 Assuming large masses, those leptoquarks can potentially lead to the operators in Table 4 after integrating them out.…”

Section: Leptoquark Models As Uv Completionsmentioning

confidence: 99%

General neutrino interactions from an effective field theory perspective

2019

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General Neutrino Interactions (GNI) are scalar, pseudoscalar, vector, axial vector or tensor interactions of neutrinos with fermions, and generalise the often studied neutrino Non-Standard Interactions (NSI). If GNI arise from heavy new physics, they should be embeddable into effective field theory operators that respect the Standard Model (SM) gauge symmetry. Therefore we consider a full basis of gauge-invariant dimension-six operators involving SM fermions and righthanded singlet neutrinos and map their Wilson coefficients onto GNI parameters. In this embedding we discuss correlations of and bounds on different GNI in the context of charged lepton flavour violation processes and neutrino-fermion scattering, as well as beta decay and coherent neutrino-nucleus scattering. We also study possible UV completions of the relevant dimension-six operators for GNI via leptoquarks that can be related to radiative neutrino masses and B physics anomalies. Details on the numbers of free GNI parameters for Dirac or Majorana neutrinos and for CP violation or conservation are also provided.

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Section: Leptoquark Models As Uv Completionsmentioning

confidence: 99%

General neutrino interactions from an effective field theory perspective

2019

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“…However, off-diagonal vector and tensor interactions are possible for Majorana neutrinos. This is in analogy to the well-known fact that Majorana neutrinos cannot have flavor diagonal magnetic moments (which couple photons to neutrinos via σ μν ) but can have flavor transition magnetic moments; see, e.g., [48]. In Table V,…”

Section: The Difference Between Dirac and Majorana Neutrinosmentioning

confidence: 52%

Borexino and general neutrino interactions

Khan

Rodejohann

2020

Phys. Rev. D

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We derive constraints on all possible general neutrino-electron interactions (scalar, vector, pseudo-scalar, axial-vector and tensor) using the recent real time Borexino event rate measurements of pp, pep and 7 Be solar neutrinos. Some of the limits improve from TEXONO and CHARM-II for incoming electron and muon neutrinos while the rest remains weaker for Borexino and those for the tau flavor are the first ones. Future improvements by next-generation solar neutrino experiments are also studied. The limits extend the physics reach of solar neutrino measurements to TeV-scale physics. Finally, the different properties of the new interactions for Dirac and Majorana neutrinos are discussed.

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“…potentially large contributions to NMMs. Especially if the new interactions has a chiralityflipping feature, then NMMs could be enhanced by about 10 orders of magnitudes [313], reaching the current/future observable ranges. Therefore, observations of large NMMs could real the underlying new physics of neutrinos.…”

Section: • Light Mediatormentioning

confidence: 97%

Neutrino non-standard interactions: A status report

Dev

Babu

Denton

et al. 2019

SciPost Phys. Proc.

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139

117

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This report summarizes the present status of neutrino non-standard interactions (NSI). After a brief overview, several aspects of NSIs are discussed, including connection to neutrino mass models, model-building and phenomenology of large NSI with both light and heavy mediators, NSI phenomenology in both short- and long-baseline neutrino oscillation experiments, neutrino cross-sections, complementarity of NSI with other low- and high-energy experiments, fits with neutrino oscillation and scattering data, DUNE sensitivity to NSI, effective field theory of NSI, as well as the relevance of NSI to dark matter and cosmology. We also discuss the open questions and interesting future directions that can be pursued by the community at large. This report is based on talks and discussions during the Neutrino Theory Network NSI workshop held at Washington University in St.~Louis from May 29-31, 2019

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Tensor and scalar interactions of neutrinos may lead to observable neutrino magnetic moments

Cited by 21 publications

References 79 publications

General neutrino interactions from an effective field theory perspective

General neutrino interactions from an effective field theory perspective

Borexino and general neutrino interactions

Neutrino non-standard interactions: A status report

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