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

INSPIRE   JSON PDGID: B090

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

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

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▸  exp ${{\mathit N}{(2220)}}$ POLE POSITION

REAL PART 2130 TO 2200 $(\approx 2150 )$ MeV

$-2{\times }$IMAGINARY PART 360 TO 480 $(\approx 400 )$ MeV

▸  exp ${{\mathit N}{(2220)}}$ ELASTIC POLE RESIDUE

MODULUS $\vert \mathit r\vert $ 35 TO 60 $(\approx 45 )$ MeV

PHASE $\theta $ -60 TO -10 $(\approx -40 )$ $^\circ{}$

▸  exp ${{\mathit N}{(2220)}}$ 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 TO 2300 $(\approx 2250 )$ MeV

${{\mathit N}{(2220)}}$ BREIT-WIGNER WIDTH 350 TO 500 $(\approx 400 )$ MeV

▸  exp ${{\mathit N}{(2220)}}$ 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$_{3/2}$

${{\mathit N}{(2220)}}$ DECAY MODES
The following branching fractions are our estimates, not fits or averages.
Mode   Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/ Conf. Level P(MeV/c)   $\Gamma_{1}$ ${{\mathit N}}{{\mathit \pi}}$ $(15 - 30) \%$ 924