Zee-Burst: A New Probe of Neutrino Nonstandard Interactions at IceCube

Babu, K. S.; Dev, P. S. Bhupal; Jana, Sudip; Sui, Yicong

doi:10.1103/physrevlett.124.041805

“…This limit is shown by the purple shaded region. A light charged scalar η + 2 /φ + 2 of the model could potentially give rise to a Glashow-like resonance feature [77] in the ultra-high energy neutrino event spectrum at the IceCube; this future IceCube sensitivity is shown by solid brown curve corresponding toan exposure time of 50 ×T 0 . The gray shaded region indicates the current exclusion limit on neutrino magnetic moment from Borexino experiment.…”

Section: Jhep10(2020)040mentioning

confidence: 99%

Large neutrino magnetic moments in the light of recent experiments

Babu

¹

,

Jana

²

,

Lindner

³

2020

J. High Energ. Phys.

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The excess in electron recoil events reported recently by the XENON1T experiment may be interpreted as evidence for a sizable transition magnetic moment $$ {\mu}_{v_e{v}_{\mu }} $$ μ v e v μ of Majorana neutrinos. We show the consistency of this scenario when a single component transition magnetic moment takes values $$ {\mu}_{v_e{v}_{\mu }}\in \left(1.65-3.42\right)\times {10}^{-11}{\mu}_B $$ μ v e v μ ∈ 1.65 − 3.42 × 10 − 11 μ B . Such a large value typically leads to unacceptably large neutrino masses. In this paper we show that new leptonic symmetries can solve this problem and demonstrate this with several examples. We first revive and then propose a simplified model based on SU(2)H horizontal symmetry. Owing to the difference in their Lorentz structures, in the SU(2)H symmetric limit, mν vanishes while $$ {\mu}_{v_e{v}_{\mu }} $$ μ v e v μ is nonzero. Our simplified model is based on an approximate SU(2)H, which we also generalize to a three family SU(3)H-symmetry. Collider and low energy tests of these models are analyzed. We have also analyzed implications of the XENON1T data for the Zee model and its extensions which naturally generate a large $$ {\mu}_{v_e{v}_{\mu }} $$ μ v e v μ with suppressed mν via a spin symmetry mechanism, but found that the induced $$ {\mu}_{v_e{v}_{\mu }} $$ μ v e v μ is not large enough to explain recent data. Finally, we suggest a mechanism to evade stringent astrophysical limits on neutrino magnetic moments arising from stellar evolution by inducing a medium-dependent mass for the neutrino.

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“…Non-Standard Interactions in Radiative Neutrino Mass Models Sudip Jana potentially observable NSI with electrons. We show that these light charged Zee-scalars could give rise to a Glashow-like resonance feature [10] in the UHE neutrino event spectrum at the IceCube neutrino observatory and its high-energy upgrade IceCube-Gen2, which can probe a sizable fraction of the allowed NSI parameter space. Within the SM, the only resonance IceCube is sensitive to is the Glashow resonance [11], where electron anti-neutrinos hitting the target electrons in ice could produce an on-shell -boson:…”

Section: Pos(ichep2020)143mentioning

confidence: 91%

“…Next, I discuss a new way [10] to probe NSI of neutrinos with matter using the ultra-high energy (UHE) neutrino data at current and future neutrino telescopes. We consider the Zee model of radiative neutrino mass generation as a prototype [10], which allows two charged scalars -one…”

Section: Ic 2t0mentioning

confidence: 99%

“…On the other hand, the possibility of observing a -boson resonance ( -burst) at IceCube due to UHE anti-neutrinos interacting with non-relativistic relic neutrinos is bleak, as the required incoming neutrino energy in this case turns out to be = 2 /2 10 23 eV, well beyond the Greisen-Zatsepin-Kuzmin cut-off energy of ∼ 5 × 10 19 eV for the UHE cosmic rays-the most likely progenitors of the UHE neutrinos. Here, we propose the possibility of light charged scalar resonances at IceCube, which are intimately related to neutrino mass generation [10], as well as observable non-standard interactions (NSI) [10], neutrino magnetic moment [12] and "flavored 0 decay" [13]. While our analysis is focused on Zee model, it essentially covers various other theoretically motivated models [13][14][15][16][17][18][19] with light charged scalars.…”

Section: Pos(ichep2020)143mentioning

confidence: 99%

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Non-Standard Interactions in Radiative Neutrino Mass Models

Jana¹

2021

Proceedings of 40th International Conference on High Energy Physics — PoS(ICHEP2020)

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I present a comprehensive analysis of neutrino non-standard interactions (NSI) generated by new scalars in radiative neutrino mass models. For this purpose, I adopt a new nomenclature to classify radiative neutrino mass models, viz., the class of models with at least one SM particle in the loop are dubbed as type-I radiative models, whereas those models with no SM particles in the loop are called type-II radiative models. From NSI perspective, the type-I radiative models are most interesting, as the neutrino couples to a SM fermion (matter field) and a new scalar directly, thus generating NSI at tree-level, unlike type-II radiative models. After taking into account various theoretical and experimental constraints, I have summarized the maximum possible NSI in all the type-I radiative models. I also show that the light charged scalars in radiative models could give rise to a Glashow-like resonance feature in the UHE neutrino event spectrum at the IceCube neutrino observatory and its high-energy upgrade IceCube-Gen2, which can probe a sizable fraction of the allowed NSI parameter space. This talk is based on results obtained with K.

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“…In Ref. [43], it has been also shown that the light charged scalars in radiative models could give rise to a Glashow-like resonance feature in the UHE neutrino event spectrum at the IceCube neutrino observatory and its high-energy upgrade IceCube-Gen2, which can probe a sizable fraction of the allowed NSI parameter space. While the analysis [11,43] is focused on Zee model, it essentially covers various other theoretically motivated models [44,45,46,47,48,49,50,51] with light charged scalars.…”

Section: Towards a Uv Complete Scenariomentioning

confidence: 99%

Neutrino Non-Standard Interactions: Complementarity between LHC and Oscillation Experiments

Babu

¹

,

Gonçalves

²

,

Jana³

et al. 2021

Proceedings of the International Conference on Beyond Standard Model: From Theory to Experiment

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We investigate the complementarity between LHC searches and neutrino experiments in probing neutrino non-standard interactions. Our study spans the theoretical frameworks of effective field theory, simplified model and an illustrative UV completion, highlighting the synergies and distinctive features in all cases. We show that besides constraining the allowed NSI parameter space, the LHC data can break important degeneracies present in oscillation experiments such as DUNE, while the latter play an important role in probing light and weakly coupled physics undetectable at the LHC. This talk is based on results presented in hep-ph 2003.03383 [1].

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Zee-Burst: A New Probe of Neutrino Nonstandard Interactions at IceCube

Cited by 25 publications

References 75 publications

Large neutrino magnetic moments in the light of recent experiments

Large neutrino magnetic moments in the light of recent experiments

Non-Standard Interactions in Radiative Neutrino Mass Models

Neutrino Non-Standard Interactions: Complementarity between LHC and Oscillation Experiments

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