# L49: PROTON MASS FROM Os

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

## Prompt

PROTON MASS FROM Os
The proton is a bound state of 3 quarks. Using M_scale=120.16 MeV, show: m_p ~ 8 * M_scale = 8 * 120.16 = 961 MeV (rough). Or use lattice-style estimate. Compare to PDG m_p = 938.272 MeV. Identify derivation path. Flag whether m_p is a prediction or calibration in v1.27.5. #SuperGrokTOE #ProtonMass #Hadrons