Result · Physics
Frontier problem
Not Addressed
Proton Spin Puzzle
The proton spin puzzle — why quarks carry only ~30% of the proton's spin — has been an active problem since the EMC experiment (1988). The τ-framework's QCD sec…
Physics
Domain level open problem
PART
Book IV
Overview
The proton spin puzzle — why quarks carry only ~30% of the proton’s spin — has been an active problem since the EMC experiment (1988). The τ-framework’s QCD sector has structural tools but no entry yet.
Result Statement
Proton spin puzzle: structural tools exist but no derivation yet. Status: Not Addressed.