Graviton Enhanced Uhe Neutrino Cross-Sections and Giant Air Showers

Jain, Ambar; Jain, Pankaj; McKay, Douglas W.; Ralston, John P.

doi:10.1142/s0217751x02005979

Cited by 18 publications

(20 citation statements)

References 38 publications

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“…15). In this case an exchange by the ladder of Kaluza-Klein spin-2 excitations of graviton could give rise to neutrino-nucleon cross-section compatible with the data [817,820,821]. However, the conclusion of ref.…”

Section: Neutrinos and Lepto/baryogenesismentioning

confidence: 51%

Neutrinos in cosmology

2002

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Cosmological implications of neutrinos are reviewed. The following subjects are discussed at a different level of scrutiny: cosmological limits on neutrino mass, neutrinos and primordial nucleosynthesis, cosmological constraints on unstable neutrinos, lepton asymmetry of the universe, impact of neutrinos on cosmic microwave radiation, neutrinos and the large scale structure of the universe, neutrino oscillations in the early universe, baryo/lepto-genesis and neutrinos, neutrinos and high energy cosmic rays, and briefly some more exotic subjects: neutrino balls, mirror neutrinos, and neutrinos from large extra dimensions. Content

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Section: Neutrinos and Lepto/baryogenesismentioning

confidence: 51%

Neutrinos in cosmology

2002

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“…For the hypothesis of a Standard Model τ -lepton of ν τ origin of ANITA anomalous events to be consistent with the data, substantially more events would be expected at low emergence angles. Further suppression of the cross section, beyond the Standard Model (see for example [27][28][29]), would further shift the peak of the distribution to larger emergence angles. This will be the subject of a future study.…”

Section: B Differential Acceptance Vs Emergence Anglementioning

confidence: 99%

Comprehensive analysis of anomalous ANITA events disfavors a diffuse tau-neutrino flux origin

Romero-Wolf¹,

Wissel²,

Schoorlemmer³

et al. 2019

Phys. Rev. D

106

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Recently, the ANITA collaboration reported on two upward-going extensive air shower events consistent with a primary particle that emerges from the surface of the Antarctic ice sheet. These events may be of ντ origin, in which the neutrino interacts within the Earth to produce a τ lepton that emerges from the Earth, decays in the atmosphere, and initiates an extensive air shower. In this paper we estimate an upper bound on the ANITA acceptance to a diffuse ντ flux detected via τ -lepton-induced air showers within the bounds of Standard Model uncertainties. By comparing this estimate with the acceptance of Pierre Auger Observatory and IceCube and assuming Standard Model interactions, we conclude that a ντ origin of these events would imply a neutrino flux at least two orders of magnitude above current bounds.

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“…Unlike high-energy photons and baryons, high-energy neutrinos can traverse the cosmos without suffering significant energy losses and thus provide a probe into high energy-phenomena throughout the entire Universe. The study of high-energy cosmic neutrinos also offers the opportunity to test particle interactions and fundamental laws [10][11][12]. However, the fluxes of plausible astrophysical sources are expected to be challengingly low and uncertain [13].…”

Section: Introductionmentioning

confidence: 99%

Bayesian inference constraints on astrophysical production of ultra-high energy cosmic rays and cosmogenic neutrino flux predictions

Romero-Wolf

Ave

2018

J. Cosmol. Astropart. Phys.

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A flux of extra-terrestrial neutrinos at energies 10 15 eV has the potential to serve as a cosmological probe of the high-energy universe as well as tests of fundamental particle interactions. Cosmogenic neutrinos, produced from the interactions of ultra-high energy cosmic rays (UHECRs) with cosmic photon backgrounds, have been regarded as a guaranteed flux. However, the expected neutrino flux depends on the composition of UHECRs at the highest energies; heavier nuclei result in lower neutrino fluxes compared to lighter nuclei and protons. The objective of this study is to estimate the range of cosmogenic neutrino spectra consistent with recent cosmic-ray spectral and compositional data using a fully inferential Bayesian approach. The study assumes a range of source distributions consistent with astrophysical sources, the flux and composition of cosmic rays, and detector systematic uncertainties. The technique applied to this study is the use of an affine-invariant Markov Chain Monte Carlo, which is an effective Bayesian inference tool for characterizing multi-dimensional parameter spaces and their correlations.

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Graviton Enhanced Uhe Neutrino Cross-Sections and Giant Air Showers

Cited by 18 publications

References 38 publications

Neutrinos in cosmology

Neutrinos in cosmology

Comprehensive analysis of anomalous ANITA events disfavors a diffuse tau-neutrino flux origin

Bayesian inference constraints on astrophysical production of ultra-high energy cosmic rays and cosmogenic neutrino flux predictions

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