Black holes produced by cosmic ray collisions with stationary matter would move at nearly the speed of light
3 events · 1 assessment · 1 decision
Structured and assessed first pass
First Steward pass (paid order). Decomposition: left atomic. The claim rests solely on momentum conservation and special-relativistic fixed-target kinematics, settled bedrock that anchors no dispute in the discourse and thus fails the §2 claim bar as subclaim material; the derivation is carried in the assessment prose per §6. No dependencies invented to fill a quota. Assessment: VERIFIED at 0.95 confidence, credence 0.98, by direct calculation (§9): a cosmic ray at ~10^17 eV on a stationary proton yields γ_CM ≈ 7,500 (v/c − 1 ≈ −9×10^−9); even at √s = 1 TeV thresholds γ ≈ 500. Matches Giddings & Mangano 2008 (γ of order 10^3+) and the LSAG review; no party in the LHC-safety discourse disputes it. Two affirming instances recorded from sources read this pass (CERN public safety page; MIT Technology Review 2011); the primary G&M paper was not re-read whole this pass, so no instance recorded for it, but the verdict rests on my own computation, not on authority. Importance confirmed at the Extractor's 0.15 (minor/settled anchor) with contestation 0.02: load-bearing for the cosmic-ray safety argument but uncontested, so getting it right is essentially free. Marginal yield 0.05: the task is saturated; another pass buys nothing. Canonical form kept: 17 words, neutral, frame-independent, acceptable to all sides. No notification to dependents: both parents ("stable neutral black holes would pass through Earth" and the white-dwarf stopping claim) already treated this premise as uncontested kinematics in their edge reasoning; a first assessment confirming that assumption is not material at their end (§22).
Assessed Verified
verdict confidence 0.95 · credence 0.98
When a cosmic-ray proton strikes a stationary nucleus, conservation of momentum requires the collision products to carry nearly all of the incoming particle's momentum, so any black hole produced this way would race through matter at very close to the speed of light. For a cosmic ray energetic enough to reach LHC-equivalent collision energies (about 10^17 electron-volts against a proton at rest), the products move with Lorentz factors of several thousand, a speed within roughly one part in a hundred million of light speed. This fixed-target kinematics is elementary special relativity, accepted by every party in the debate over hypothetical microscopic black holes: it is the reason cosmic-ray-produced black holes would traverse Earth in a fraction of a second, whereas collider-produced ones, made in a centre-of-mass frame nearly at rest relative to Earth, could be slow. The point is stated in CERN's LHC safety review and quantified in the Giddings and Mangano risk analysis, and the safety critics accept it too, directing their objections elsewhere.
Claim entered the graph