QUARKS INSPIRE   JSON  (beta) PDGID:
Q123

Light Quarks (${\mathit {\mathit u}}$, ${\mathit {\mathit d}}$, ${\mathit {\mathit s}}$)

 
See related review:
Quark Masses
${\mathit {\mathit u}}$-QUARK MASS   $2.16 {}^{+0.49}_{-0.26}$ MeV 
 
${\mathit {\mathit d}}$-QUARK MASS   $4.67 {}^{+0.48}_{-0.17}$ MeV 
 
${{\overline{\mathit m}}}$ = (${\mathit m}_{{{\mathit u}}}+{\mathit m}_{{{\mathit d}}})/$2   $3.45 {}^{+0.35}_{-0.15}$ MeV 
 
${\mathit m}_{{{\mathit u}}}/{\mathit m}_{{{\mathit d}}}$ MASS RATIO   $0.474 {}^{+0.056}_{-0.074}$  
 
${\mathit {\mathit s}}$-QUARK MASS   $93.4 {}^{+8.6}_{-3.4}$ MeV 
 
OTHER LIGHT QUARK MASS RATIOS
${\mathit m}_{{{\mathit s}}}/{\mathit m}_{{{\mathit d}}}$ MASS RATIO   $\text{17 - 22}$  
 
${\mathit m}_{{{\mathit s}}}/{{\overline{\mathit m}}}$ MASS RATIO   $27.33 {}^{+0.67}_{-0.77}$  
 
$\mathit Q$ MASS RATIO
FOOTNOTES