Cosmic Colliders in Binary Blazars Probing Ultra-High-Energy Particle Physics
Abstract
While terrestrial colliders and fixed-target cosmic-ray interactions are bounded at center-of-mass (CM) energies √s ≲ 𝒪(105) GeV, we demonstrate that bound sub-parsec binary blazars form broad-band, beam-beam hadronic ``Cosmic Colliders'', overcoming such limitation. Driven by modest jet misalignments (θmis ∼ 1∘ − 6∘), co-streaming proton beams collide at CM energies reaching √s ∼ 1010 GeV - six orders of magnitude above the Large Hadron Collider. Operating in a strictly optically thin regime (τpp ≪ 1), the system performs a continuous CM energy scan, probing asymptotic QCD scaling, gluon saturation, and Froissart unitarity, while opening a possible high-sensitivity window into physics beyond the Standard Model. Secondary PeV-EeV neutrinos and sub-TeV γ-rays fall directly within reach of current and planned observatories such as LHAASO, CTAO, IceCube, and GRAND, establishing binary blazars as laboratories for physics at the ultimate energy limit.
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BibTeX
@misc{galanti2026cosmic,
title = {{Cosmic Colliders in Binary Blazars Probing Ultra-High-Energy Particle Physics}},
author = {Giorgio Galanti},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.17033},
eprint = {2610.17033},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.17033},
}
RIS
TY - UNPB
TI - Cosmic Colliders in Binary Blazars Probing Ultra-High-Energy Particle Physics
AU - Giorgio Galanti
PY - 2026
DA - 2026/10/12
PB - arXiv
DO - 10.48550/arxiv.2610.17033
UR - https://arxiv.org/abs/2610.17033
AB - While terrestrial colliders and fixed-target cosmic-ray interactions are bounded at center-of-mass (CM) energies √s ≲ 𝒪(10^5) GeV, we demonstrate that bound sub-parsec binary blazars form broad-band, beam-beam hadronic ``Cosmic Colliders'', overcoming such limitation. Driven by modest jet misalignments (θ_mis ∼ 1^∘ − 6^∘), co-streaming proton beams collide at CM energies reaching √s ∼ 10^10 GeV - six orders of magnitude above the Large Hadron Collider. Operating in a strictly optically thin regime (τ_pp ≪ 1), the system performs a continuous CM energy scan, probing asymptotic QCD scaling, gluon saturation, and Froissart unitarity, while opening a possible high-sensitivity window into physics beyond the Standard Model. Secondary PeV-EeV neutrinos and sub-TeV γ-rays fall directly within reach of current and planned observatories such as LHAASO, CTAO, IceCube, and GRAND, establishing binary blazars as laboratories for physics at the ultimate energy limit.
ER -