ZBurst is and was alive Cris 2004 by D.Fargion

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Z-Burst is (and was) alive (Cris 2004)by
D.Fargion

• On the rumors of the premature Z-model death
  which is and it remains unique to solve the
  homogeneity and isotropy puzzle in UHECR data
• Z-Burst UpDated (2006)

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The Greisen-Zatsepin-Kuzmin (GZK) cut-off
Ultra High Energy Nucleons may produce pions
on the 2.75 K BBR
?
nucleon

• sources must be nearby (Local SuperCluster)
• Or Neutrino Mediated (Z- Shower Model)

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The real puzzle is not the GZK cut-off absence
(or mild presence)
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UHECR around our Local Universe, as a New
Garanteed Astronomy..Not yet correlated
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UHECRs sources are not here around
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Best Sources are Greatest Beast Jetsjust
pointing to us BL Lacs
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But Nearest Extra-Galactic (Cygnus) sources are
not in UHECR directions
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Nearest AGN Jet , M87, is not in UHECR list and
is not pointing to us
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Good candidates Jets are far away more than GZK
50 Mpc size
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Gorbunov-Tinyakov- et allBL Lac- UHECR
correlations
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BL Lac-GeV-UHECR Connection at Redshift z
0.2 0.564 0.53 0.317?
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Energy Losses and propagation are bounding also
tens EeV UHECR distances Secondary electron
pairs will trace longest pathsThe primary UHECR
extreme with no Z-Burst-UHECR calls for extreme
primary energy
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Z-Burst Showering and their UHECR traces
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The UHECR puzzle is not just the spectra, but
also the homogeneity and the isotropy reminescent
of a far cosmic origin
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The real puzzle in UHECRis the absence of local
sourcesimprint anisotropy or inhomogeneity
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Andrey Kravtsov Kavli Center University of Chicago
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Relic Neutrinos a hot dark-matter candidate
cloud target for UHE neutrinos the Z-Burst
Modellike GZK cut off Lighter neutrino
mass-Larger Halos
2 October1997 astro-ph/9710029 D.Fargion,
B.Mele, A.SalisAstrophys.J. 517 (1999) 725-733
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Z-Burst by Z bosons in neutrino pair scattering
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Boosted Z Showers
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All particle flux (dN/dA dE dt dW E
)Photons versus C.R. and Neutrinos Astronomy
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(dN/(dA dE dt dW) E2 ) Differential Flux
Energy
For a minimal 0.05 eV mass one may foresee a
bump of UHECR at ZeV
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Decay Z channels at 0.4 eV
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WMAP-BBR bumps, power spectrum and homogeneity
versus Neutrino does we face non-degenerated
neutrino masses?
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Z-Burst UpdatedIs the Neutrino mass degenerate
or not?

• The prenent neutrino mass cosmic bounds by
  W-map
• are favouring lighter and lighter neutrino,
• leading from nearly degenerated neutrino masses
  (mn 0.4 eV or 0.15 eV) to eventual NON
  degenerated neutrino masses for future bounds
  (Sum masses lt 0.15 eV)
• For example twin
• (mn1 0.1 eV, mn2 0.05 eV , mn3 0.045)
  or triple
• (mn1 0.06 eV, mn2 0.008 eV , mn3 0.0001
  eV)

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Nearly Non degenerate Neutrino twin masses
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Lightest Neutrino non-degenerated Mass Splitting
different masses and density contrast
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Z-Burst Showering in TeV-GeVGamma precursors
and afterglows.Escape from TeV-IR cut-off? DF
and Antonella Colaiuda 2004, Nucl.Phys.B D.F.
ICRC 2001
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Expected Neutrino Fluxes in Z-Shower model
(F.W.Yoshida-Semikoz-Sigl)
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Conclusions

• The Tens EeV UHECR must trace in gamma their
  arrival if UHECR direct proton (billions year
  flight)
• The Z-Shower events occuring inside 10 Mpcs
• (nearly GZK ) volumes of hot lightest
  neutrinos , are not polluted by secondary gamma
  and TeV (Tinyakov 2004) traces (unobserved).
• The Forte experiment actually is observing 3
  events not a real limit (yet) on Z Model.
• Z-Burst is the only one making BL-Lac at z
  0.5
• related to UHECR Isotropy in AGASA, HIRES
  and AUGER still favour cosmic connection, and
  Z-Showering is the unique to courier their
  energy.