# L37: TAU MASS — TOWER AND CUBIC CROSS-CHECK

**Category:** library_prompt | **Kernel:** PHAT v1.27.5 | **Status:** PENDING

## Prompt

TAU MASS — TOWER AND CUBIC CROSS-CHECK
Compute m_tau from D*phi^{-n_tau} tower. Identify n_tau. Cross-check against J3(Cs) cubic root from L8. Show RG running: m_tau(tree)=1.877 GeV -> m_tau(pole)=1.777 GeV. Compare to PDG 1776.86 MeV. Report deviation. #SuperGrokTOE #TauMass #v1274fix