Bounding effective operators at the one-loop level: the case of four-fermion neutrino interactions

Bilenky, M. S.; Santamaría, Arcadi

doi:10.1016/0370-2693(94)00961-9

Cited by 22 publications

(19 citation statements)

References 21 publications

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“…Even if the neutrinos are not detected directly, their presence can be inferred by precise measurements of other particles. For example, in the presence of νSI, a mediator can be produced by bremsstrahlung from an external neutrino [33,40,72]; a massive mediator will then decay into other particles [7][8][9]. In Majoron-type models, the best laboratory constraints come from meson and lepton decays, e.g., Refs.…”

Section: Secret Neutrino Interactionsmentioning

confidence: 99%

“…In principle, it can be self-consistently incorporated into three-flavor Boltzmann equations by generalizing Eq. (8).…”

Section: F Detection Prospectsmentioning

confidence: 99%

“…For massless mediators, such as in Majoron models [1][2][3][4][5], there is at least one stable new particle. For very heavy mediators, one can use an effective theory to study the phenomenology of a class of models [6][7][8][9]. In between, the mediator mass is more moderate, and could induce resonances [10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

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Cosmic neutrino cascades from secret neutrino interactions

Beacom

2014

Phys. Rev. D

149

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The first detection of high-energy astrophysical neutrinos by IceCube provides new opportunities for tests of neutrino properties. The long baseline through the Cosmic Neutrino Background (CνB) is particularly useful for directly testing secret neutrino interactions (νSI) that would cause neutrinoneutrino elastic scattering at a larger rate than the usual weak interactions. We show that IceCube can provide competitive sensitivity to νSI compared to other astrophysical and cosmological probes, which are complementary to laboratory tests. We study the spectral distortions caused by νSI with a large s-channel contribution, which can lead to a dip, bump, or cutoff on an initially smooth spectrum. Consequently, νSI may be an exotic solution for features seen in the IceCube energy spectrum. More conservatively, IceCube neutrino data could be used to set model-independent limits on νSI. Our phenomenological estimates provide guidance for more detailed calculations, comparisons to data, and model building.

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Section: Secret Neutrino Interactionsmentioning

confidence: 99%

“…In principle, it can be self-consistently incorporated into three-flavor Boltzmann equations by generalizing Eq. (8).…”

Section: F Detection Prospectsmentioning

confidence: 99%

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Cosmic neutrino cascades from secret neutrino interactions

Beacom

2014

Phys. Rev. D

149

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“…At Hyper-K, we expect roughly 50,000 to 75,000 IBD events, and 3,000 to 4,000 ES events detected at Hyper-K over a 20 second period for a core collapse supernova at 10 kpc, with the 70 -80% of these events occuring in the 1 to 20 second time period of interest, as can be gleaned from [22]. Naturally, the design of the Hyper-K detector lends itself toν e detection at these energies (5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15). Looking at Fig.…”

Section: Hyper-k Sensitivity To Nssimentioning

confidence: 99%

Probing non-standard neutrino interactions with supernova neutrinos at Hyper-K

Lei

Steinberg

Wells

2020

J. High Energ. Phys.

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Non-standard neutrino self interactions (NSSI) could be stronger than Fermi interactions. We investigate the ability to constrain these four-neutrino interactions by their effect on the flux of neutrinos originating from a galactic supernova. In the dense medium of a core collapse supernova, these new self interactions can have a significant impact on neutrino oscillations, leading to changes at the flavor evolution and spectra level. We use simulations of the neutrino flux from a 13 solar mass, core collapse supernova at 10 kpc away, and numerically propagate these neutrinos through the stellar medium taking into account vacuum/MSW oscillations, SM ν − ν scattering as well as ν − ν interactions that arise from NSSI. We pass the resulting neutrino flux to a simulation of the future Hyper-Kamiokande detector to see what constraints on NSSI parameters are possible when the next galactic supernova becomes visible. We find that these constraints depend strongly on the neutrino mass hierarchy and if the NSSI is flavor-violating or preserving. Sensitivity to NSSI in the normal hierarchy (NH) at Hyper-K is limited by the experiment's ability to efficiently detect ν e , but deviations from no NSSI could be seen if the NSSI is particularly strong. In the inverted hierarchy (IH) scenario, Hyper-K can significantly improve constraints on flavor-violating NSSI down to O(10 −1 )G F .

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“…Neutrinos may decay via many possible channels. Of these, radiative two-body decay modes are strongly constrained by photon appearance searches [57] to have very long lifetimes, as are threebody decays of the form ν → ννν which are constrained [58] by bounds on anomalous Zνν couplings [59]. Decay channels of the form…”

Section: Jcap09(2010)009mentioning

confidence: 99%

Local-Density Approximations to the Elastic Scattering of Electrons from Mg and Ba Atoms

Al-Mulla

Jönsson

2002

Phys. Scr.

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An IOP and SISSA journal J Ultra-high energy neutrino fluxes as a probe for non-standard physics Abstract. We examine how light neutrinos coming from distant active galactic nuclei (AGN) and similar high energy sources may be used as tools to probe non-standard physics. In particular we discuss how studying the energy spectra of each neutrino flavour coming from such distant sources and their distortion relative to each other may serve as pointers to exotic physics such as neutrino decay, Lorentz symmetry violation, pseudo-Dirac effects, CP and CPT violation and quantum decoherence. This allows us to probe hitherto unexplored ranges of parameters for the above cases, for example lifetimes in the range 10 −3 − 10 4 s/eV for the case of neutrino decay. We show that standard neutrino oscillations ensure that the different flavours arrive at the earth with similar shapes even if their flavour spectra at source may differ strongly in both shape and magnitude. As a result, observed differences between the spectra of various flavours at the detector would be signatures of non-standard physics altering neutrino fluxes during propagation rather than those arising during their production at source. Since detection of ultra-high energy (UHE) neutrinos is perhaps imminent, it is possible that such differences in spectral shapes will be tested in neutrino detectors in the near future. To that end, using the IceCube detector as an example, we show how our results translate to observable shower and muon-track event rates.

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Bounding effective operators at the one-loop level: the case of four-fermion neutrino interactions

Cited by 22 publications

References 21 publications

Cosmic neutrino cascades from secret neutrino interactions

Cosmic neutrino cascades from secret neutrino interactions

Probing non-standard neutrino interactions with supernova neutrinos at Hyper-K

Local-Density Approximations to the Elastic Scattering of Electrons from Mg and Ba Atoms

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