QUARKS

#### ${\mathit {\mathit c}}$

$I(J^P)$ = $0(1/2^{+})$
 Charge = ${2\over 3}$ $\mathit e$ Charm = $+$1
 ${\mathit {\mathit c}}$-QUARK MASS $1.27 \pm0.02$ GeV
 ${\mathit m}_{{{\mathit c}}}/{\mathit m}_{{{\mathit s}}}$ MASS RATIO $11.76 {}^{+0.05}_{-0.10}$
 ${\mathit m}_{{{\mathit b}}}/{\mathit m}_{{{\mathit c}}}$ MASS RATIO $4.58 \pm0.01$
 ${\mathit m}_{{{\mathit b}}}−{\mathit m}_{{{\mathit c}}}$ QUARK MASS DIFFERENCE $3.45 \pm0.05$ GeV
 FOOTNOTES