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${{\boldsymbol N}}$ BARYONS
($\boldsymbol S$ = 0, $\boldsymbol I$ = 1/2)
${{\mathit p}}$, ${{\mathit N}^{+}}$ = ${\mathit {\mathit u}}$ ${\mathit {\mathit u}}$ ${\mathit {\mathit d}}$; ${{\mathit n}}$, ${{\mathit N}^{0}}$ = ${\mathit {\mathit u}}$ ${\mathit {\mathit d}}$ ${\mathit {\mathit d}}$

${{\boldsymbol N}{(2220)}}$ $I(J^P)$ = $1/2(9/2^{+})$

Older and obsolete values are listed and referenced in the 2014 edition, Chinese Physics C38 070001 (2014).

${{\boldsymbol N}{(2220)}}$ POLE POSITION

$2130\text{ to }2200\text{ }(\approx2170) $ MeV

$-2{\times }$IMAGINARY PART

$360\text{ to }480\text{ }(\approx400) $ MeV

${{\boldsymbol N}{(2220)}}$ ELASTIC POLE RESIDUE

MODULUS $\vert \mathit r\vert $

$35\text{ to }60\text{ }(\approx45) $ MeV

PHASE $\theta $

$-60\text{ to }-30\text{ }(\approx-50) $ $^\circ{}$

${{\boldsymbol N}{(2220)}}$ INELASTIC POLE RESIDUE

Normalized residue in ${{\mathit N}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit N}{(2220)}}$ $\rightarrow$ ${{\mathit N}}{{\mathit \eta}}$

Normalized residue in ${{\mathit N}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit N}{(2220)}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit K}}$

Normalized residue in ${{\mathit N}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit N}{(2220)}}$ $\rightarrow$ ${{\mathit \Sigma}}{{\mathit K}}$

${{\mathit N}{(2220)}}$ BREIT-WIGNER MASS

$2200\text{ to }2300\text{ }(\approx2250) $ MeV

${{\mathit N}{(2220)}}$ BREIT-WIGNER WIDTH

$350\text{ to }500\text{ }(\approx400) $ MeV

${{\boldsymbol N}{(2220)}}$ PHOTON DECAY AMPLITUDES AT THE POLE

${{\mathit N}{(2220)}}$ $\rightarrow$ ${{\mathit p}}{{\mathit \gamma}}$ , helicity-1/2 amplitude A$_{1/2}$

${{\mathit N}{(2220)}}$ $\rightarrow$ ${{\mathit p}}{{\mathit \gamma}}$ , helicity-3/2 amplitude A$_{3/2}$

Decay Modes

The following branching fractions are our estimates, not fits or averages.

${{\mathit N}}{{\mathit \pi}}$