Stronger neutrino interactions at extremely high energies and the muon anomalous magnetic moment

Barshay, Saul; Kreyerhoff, Georg

doi:10.1007/s100520100858

Cited by 6 publications

(10 citation statements)

References 10 publications

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“…Such suddenly increasing cross-sections have been proposed in various models involving physics beyond the Standard Model [11][12][13][14][15][16]. In Fig.…”

Section: Neutrino Induced Air Shower Ratementioning

confidence: 95%

Strongly Interacting Neutrinos as the Highest Energy Cosmic Rays

Fodor

Katz

Ringwald

et al. 2004

Beyond the Desert 2003

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Abstract. We show that all features of the ultrahigh energy cosmic ray spectrum from 10 17 eV to 10 21 eV can be described with a simple power-like injection spectrum of protons under the assumption that the neutrino-nucleon cross-section is significantly enhanced at center of mass energies above ≈ 100 TeV. In our scenario, the cosmogenic neutrinos produced during the propagation of protons through the cosmic microwave background initiate air showers in the atmosphere, just as the protons. The total air shower spectrum induced by protons and neutrinos shows excellent agreement with the observations. A particular possibility for a large neutrino-nucleon cross-section exists within the Standard Model through electroweak instanton-induced processes.

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“…Such suddenly increasing cross-sections have been proposed in various models involving physics beyond the Standard Model [11][12][13][14][15][16]. In Fig.…”

Section: Neutrino Induced Air Shower Ratementioning

confidence: 95%

Strongly Interacting Neutrinos as the Highest Energy Cosmic Rays

Fodor

Katz

Ringwald

et al. 2004

Beyond the Desert 2003

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“…[21]); for earlier and further proposals, see Refs. [22] and [23], respectively. Until now, none of these ideas have direct experimental verification.…”

Section: Introductionmentioning

confidence: 99%

Electroweak instantons as a solution to the ultrahigh energy cosmic ray puzzle

et al. 2003

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We propose a scenario in which a simple power-like primary spectrum for protons with sources at cosmological distances leads to a quantitative description of all the details of the observed cosmic ray spectrum for energies from 10 17 eV to 10 21 eV. As usual, the ultrahigh energy protons with energies above E GZK ≈ 4 · 10 19 eV loose a large fraction of their energies by the photoproduction of pions on the cosmic microwave background, which finally decay mainly into neutrinos. In our scenario, these so-called cosmogenic neutrinos interact with nucleons in the atmosphere through Standard Model electroweak instantoninduced processes and produce air showers which are hardly distinguishable from ordinary hadron-initiated air showers. In this way, they give rise to a second contribution to the observed cosmic ray spectrum -in addition to the one from above mentioned protonswhich reaches beyond E GZK . Since the whole observed spectrum is uniquely determined by a single primary injection spectrum, no fine tuning is needed to fix the ratio of the spectra below and above E GZK . The statistical analysis shows an excellent goodness of this scenario. Possible tests of it range from observations at cosmic ray facilities and neutrino telescopes to searches for QCD instanton-induced processes at HERA.

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“…( 2), in terms of the atmospheric depth X(θ), with θ being the zenith angle. Such suddenly increasing cross-sections have been proposed in various models involving physics beyond the Standard Model 32,33,34,35,36,37,38,39 . Among the usual suspects are TeV-scale gravity scenarios with large or warped extra dimensions 51 .…”

Section: Spectrum Of Neutrino-induced Air Showersmentioning

confidence: 96%

Strong Neutrino-Nucleon Interactions at Ultrahigh Energies as a Solution to the GZK Puzzle

Fodor

Katz

Ringwald

et al. 2006

The Tenth Marcel Grossmann Meeting

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After a short review of the ultrahigh energy cosmic ray puzzle -the apparent observation of cosmic rays originating from cosmological distances with energies above the expected Greisen-Zatsepin-Kuzmin cutoff 4 × 10 19 eV -we consider strongly interacting neutrino scenarios as an especially interesting solution. We show that all features of the ultrahigh energy cosmic ray spectrum from 10 17 eV to 10 21 eV can be described to originate from a simple power-like injection spectrum of protons, under the assumption that the neutrino-nucleon cross-section is significantly enhanced at center of mass energies above ≈ 100 TeV. In such a scenario, the cosmogenic neutrinos produced during the propagation of protons through the cosmic microwave background initiate air showers in the atmosphere, just as the protons. The total air shower spectrum induced by protons and neutrinos shows excellent agreement with the observations. We shortly discuss TeVscale extensions of the Standard Model which may lead to a realization of a strongly interacting neutrino scenario. We emphasize, however, that such a scenario may even be realized within the standard electroweak model: electroweak instanton/sphaleron induced processes may get strong at ultrahigh energies. Possible tests of strongly interacting neutrino scenarios range from observations at cosmic ray facilities and neutrino telescopes to searches at lepton nucleon scattering experiments.

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Stronger neutrino interactions at extremely high energies and the muon anomalous magnetic moment

Cited by 6 publications

References 10 publications

Strongly Interacting Neutrinos as the Highest Energy Cosmic Rays

Strongly Interacting Neutrinos as the Highest Energy Cosmic Rays

Electroweak instantons as a solution to the ultrahigh energy cosmic ray puzzle

Strong Neutrino-Nucleon Interactions at Ultrahigh Energies as a Solution to the GZK Puzzle

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