Longevity and Highest-Energy Cosmic Rays

Frampton, Paul H.; Keszthelyi, Bettina; Ng, Y. Jack

doi:10.1142/s0218271899000109

Cited by 11 publications

(17 citation statements)

References 15 publications

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“…It has been suggested recently by Kuzmin and Rubakov [463] and by Berezinsky, Kachelrieß, and Vilenkin [389] (see also Ref. [464]) that EHECR may be produced from decay of some metastable superheavy relic particles (MSRPs) of mass m X > ∼ 10 12 GeV and lifetime larger than or comparable to the age of the Universe 24 . The long but finite lifetime of MSRPs could be due to slow decay of MSRPs through non-perturbative instanton effects [463] or through quantum gravity (wormhole) effects [389] which induce small violation of some otherwise conserved quantum number associated with the MSRPs.…”

Section: General Considerationsmentioning

confidence: 99%

Origin and propagation of extremely high-energy cosmic rays

2000

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Section: General Considerationsmentioning

confidence: 99%

Origin and propagation of extremely high-energy cosmic rays

2000

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“…Of course, there are no metastable superheavy relics within the SM. However, a number of candidate metastable relics are predicted in theories beyond the SM [553,554,555,556,557,558,559,560,561,562,563,564,565,566]. Here, the predicted CR flux is driven by the ratio of the density of the relics to their lifetime.…”

Section: A Top-down Originmentioning

confidence: 99%

Ultrahigh Energy Cosmic Rays: The State of the Art Before the Auger Observatory

Anchordoqui

Paul

Reucroft

et al. 2003

Int. J. Mod. Phys. A

117

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In this review we discuss the important progress made in recent years towards understanding the experimental data on cosmic rays with energies ≳ 1019eV. We begin with a brief survey of the available data, including a description of the energy spectrum, mass composition, and arrival directions. At this point we also give a short overview of experimental techniques. After that, we introduce the fundamentals of acceleration and propagation in order to discuss the conjectured nearby cosmic ray sources. We then turn to theoretical notions of physics beyond the Standard Model where we consider both exotic primaries and exotic physical laws. Particular attention is given to the role that TeV-scale gravity could play in addressing the origin of the highest energy cosmic rays. In the final part of the review we discuss the potential of future cosmic ray experiments for the discovery of tiny black holes that should be produced in the earth's atmosphere if TeV-scale gravity is realized in Nature.

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“…The first scenario (i) is that considered (in a different model) in [1]. We assume the particle X is a boson and posit a coupling…”

Section: (I) Power Suppressionmentioning

confidence: 99%

“…In [1] the case n = 2 was considered. In the spontaneous breaking of SU(15) theory [11] such a tensor appears "naturally" in the Higgs sector.…”

Section: (I) Power Suppressionmentioning

confidence: 99%

Relic Neutrinos and [ITAL]Z[/ITAL]-Resonance Mechanism for Highest Energy Cosmic Rays

Crooks¹,

Dunn²,

Frampton³

2001

The Astrophysical Journal

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The origin of the highest-energy cosmic rays remains elusive. The decay of a superheavy particle (X) into an ultra-energetic neutrino which scatters from a relic (anti-)neutrino at the Z-resonance has attractive features. Given the necessary X mass of 10 14∼15 GeV, the required lifetime, 10 15∼16 y, renders model-building a serious challenge but three logical possibilities are considered: (i) X is a Higgs scalar in SU (15) belonging to high-rank representation, leading to power-enhanced lifetime; (ii) a global X quantum number has exponentially-suppressed symmetry-breaking by instantons; and (iii) with additional space dimension(s) localisation of X within the real-world brane leads to gaussian decay suppression, the most efficient of the suppression mechanisms considered.

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Longevity and Highest-Energy Cosmic Rays

Cited by 11 publications

References 15 publications

Origin and propagation of extremely high-energy cosmic rays

Origin and propagation of extremely high-energy cosmic rays

Ultrahigh Energy Cosmic Rays: The State of the Art Before the Auger Observatory

Relic Neutrinos and [ITAL]Z[/ITAL]-Resonance Mechanism for Highest Energy Cosmic Rays

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