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Electroweak jet cascading in the decay of superheavy particles

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arxiv hep-ph/0205218 v1 pith:346HVU2E submitted 2002-05-20 hep-ph astro-ph

classification hep-phastro-ph
keywords decaysparticlessuperheavycascadingelectroweakenergyleptonsmodel
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We study decays of superheavy particles $X$ into leptons. We show that they initiate cascades similar to QCD parton jets, if $m_X\gsim 10^6$ GeV. Electroweak cascading is studied and the energy spectra of the produced leptons are calculated in the framework of a broken SU(2) model of weak interactions. As application, important for the Z-burst model for ultrahigh energy cosmic rays, we consider decays of superheavy particles coupled on tree-level only to neutrinos and derive stringent limit for these decays from the observed diffuse extragalactic $\gamma$-ray flux.

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Forward citations

Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Testing Heavy Dark Matter Decay as the Origin of KM3-230213A

    hep-ex 2026-06 unverdicted novelty 4.0 of 10

    Assuming the KM3-230213A event comes from heavy dark matter decay, the preferred mass exceeds 100 PeV at 95% CL with lifetimes of 10^26-10^27 s, but these regions conflict with bounds from other neutrino telescopes an...

  2. Various constraints on BSM physics from extensive air showers and from ultra-high energy gamma-ray and neutrino searches

    astro-ph.HE 2025-01 conditional novelty 1.0 of 10

    A faithful review of the strongest current bounds on Lorentz violation, superheavy dark matter, cosmic strings, and sterile neutrinos from ultra-high-energy cosmic-ray, gamma-ray, and neutrino searches.

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