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The impact of new physics on the interactions of neutrinos with other particles can be parametrized by a set of effective four-fermion operators called non-standard neutrino interactions (NSIs). This NSI framework is useful for studying the…

High Energy Physics - Phenomenology · Physics 2026-04-23 Ayres Freitas , Matthew Low

We investigate non-standard neutrino interactions (NSIs) in the triplet seesaw model featuring non-trivial correlations between NSI parameters and neutrino masses and mixing parameters. We show that sizable NSIs can be generated as a…

High Energy Physics - Phenomenology · Physics 2009-02-18 Michal Malinsky , Tommy Ohlsson , He Zhang

The impact of heavy mediators on neutrino oscillations is typically described by non-standard four-fermion interactions (NSIs) or non-unitarity (NU). We focus on leptonic dimension-six effective operators which do not produce charged lepton…

High Energy Physics - Phenomenology · Physics 2012-07-13 Davide Meloni , Tommy Ohlsson , Walter Winter , He Zhang

Models of radiative Majorana neutrino masses require new scalars and/or fermions to induce lepton number violating interactions. We show that these new particles also generate observable neutrino nonstandard interactions (NSI) with matter.…

High Energy Physics - Phenomenology · Physics 2020-03-06 K. S. Babu , P. S. Bhupal Dev , Sudip Jana , Anil Thapa

Many extensions of the Standard Model lead to non-standard neutrino interactions (NSI), which can affect the interpretation of current and future neutrino data. We explore an alternative approach to the study of these dimension eight four…

High Energy Physics - Phenomenology · Physics 2013-05-29 Sacha Davidson , Veronica Sanz

Theories beyond the Standard Model must necessarily respect its gauge symmetry. This implies strict constraints on the possible models of non-standard neutrino interactions, which we analyze. The focus is set on the effective low-energy…

High Energy Physics - Phenomenology · Physics 2009-10-23 M. B. Gavela , D. Hernandez , T. Ota , W. Winter

Non-Standard neutrino Interactions (NSI) are vector contact interactions involving two neutrinos and two first generation fermions, which can affect neutrino propagation in matter. SU(2) gauge invariance suggests that NSI should be…

High Energy Physics - Phenomenology · Physics 2020-02-24 Sacha Davidson , Martin Gorbahn

We consider Non-Standard neutrino Interactions (NSI), described by four-fermion operators of the form $(\bar{\nu}_{\alpha} \gamma {\nu}_{\beta}) (\bar{f} \gamma f)$, where $f$ is an electron or first generation quark. We assume these…

High Energy Physics - Phenomenology · Physics 2010-04-06 S. Davidson , C. Pena-Garay , N. Rius , A. Santamaria

Theories beyond the Standard Model must respect its gauge symmetry. This implies strict constraints on the possible models of Non-Standard Neutrino Interactions (NSIs). We review here the present status of NSIs from the point of view of…

High Energy Physics - Phenomenology · Physics 2009-11-26 D. Hernandez

We derive model-independent bounds on production and detection non-standard neutrino interactions (NSI). We find that the constraints for NSI parameters are around O(10^{-2}) to O(10^{-1}). Furthermore, we review and update the constraints…

High Energy Physics - Phenomenology · Physics 2009-09-28 Carla Biggio , Mattias Blennow , Enrique Fernandez-Martinez

Neutrino oscillation experiments are known to be sensitive to Non-Standard Interactions (NSIs). We extend the NSI formalism to include one-loop effects. We discuss universal effects induced by corrections to the tree level W exchange, as…

High Energy Physics - Phenomenology · Physics 2015-05-20 Brando Bellazzini , Yuval Grossman , Itay Nachshon , Paride Paradisi

The possible non-standard interactions (NSIs) of neutrinos with matter plays important role in the global determination of neutrino properties. In our study we select various data sets from LHC measurements at 13 TeV with integrated…

High Energy Physics - Phenomenology · Physics 2021-02-24 DianYu Liu , ChuanLe Sun , Jun Gao

In the traditional neutrinophilic two-Higgs doublet model ($\nu$2HDM), there is no non-standard neutrino interaction (NSI) as the interactions between the Standard Model fermions with neutrinos are negligibly small due to the tiny mixing of…

High Energy Physics - Phenomenology · Physics 2018-09-07 Ujjal Kumar Dey , Newton Nath , Soumya Sadhukhan

We investigate non-standard neutrino interactions (NSIs) in the Zee--Babu model. The size of NSIs predicted by this model is obtained from a full scan over the parameter space, taking into account constraints from low-energy experiments…

High Energy Physics - Phenomenology · Physics 2009-11-18 Tommy Ohlsson , Thomas Schwetz , He Zhang

We consider Non-Standard neutrino Interactions (NSI) connecting two neutrinos with two first-generation fermions ($e, u$ or $d$), which we assume to arise at at dimension eight due to New Physics. The coefficient is normalised as $4…

High Energy Physics - Phenomenology · Physics 2011-10-10 Sacha Davidson , Veronica Sanz

Coherent forward scattering processes by neutrino-scalar nonstandard interactions (SNSI) induce an effective neutrino mass. In the Early Universe, a large neutrino effective mass restricts the production of neutrinos. The SNSI effect is…

High Energy Physics - Phenomenology · Physics 2021-02-26 Jorge Venzor , Abdel Pérez-Lorenzana , Josue De-Santiago

We study the discovery reach for Non-Standard Interactions (NSIs) in a neutrino factory experiment. After giving a theoretical, but model-independent, overview of the most relevant classes of NSIs, we present detailed numerical results for…

High Energy Physics - Phenomenology · Physics 2008-11-26 Joachim Kopp , Manfred Lindner , Toshihiko Ota

Non-Standard Interactions (NSI) of neutrinos may originate from models in which new particles interact with neutrinos. In scalar extensions of the SM, the typical approach to obtain NSI requires Fierz transformations and charged Higgses,…

High Energy Physics - Phenomenology · Physics 2018-11-14 Ingolf Bischer , Werner Rodejohann , Xun-Jie Xu

We discuss ways to explore non-standard interactions (NSI) which neutrinos may possess by expressing them as effective four Fermi operators with coefficient of the order of (M_{W} / M_{NP})^2 ~0.01 (0.0001) for energy scales of new physics…

High Energy Physics - Phenomenology · Physics 2008-05-19 Hisakazu Minakata

Non-Standard neutral current Interactions (NSIs) of neutrinos with matter can alter the pattern of neutrino oscillation due to the coherent forward scattering of neutrinos on the medium. This effect makes long-baseline neutrino experiments…

High Energy Physics - Phenomenology · Physics 2016-08-03 Yasaman Farzan , Ian M. Shoemaker
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