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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: B017

${{\mathit N}{(1990)}}$ $I(J^P)$ = $1/2(7/2^{+})$

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

${{\mathit N}{(1990)}}$ POLE POSITION

REAL PART

$-2{\times }$IMAGINARY PART

${{\mathit N}{(1990)}}$ ELASTIC POLE RESIDUE

MODULUS $\vert \mathit r\vert $

PHASE $\theta $

${{\mathit \Delta}{(1990)}}$ INELASTIC POLE RESIDUE

Normalized residue in ${{\mathit N}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit N}{(1990)}}$ $\rightarrow$ ${{\mathit N}}{{\mathit \eta}}$   $0.048 \pm0.001$

Normalized residue in ${{\mathit N}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit N}{(1990)}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit K}}$   $0.004 \pm0.001$

Normalized residue in ${{\mathit N}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit N}{(1990)}}$ $\rightarrow$ ${{\mathit \Sigma}}{{\mathit K}}$

${{\mathit N}{(1990)}}$ BREIT-WIGNER MASS   $1950\text{ to }2100\text{ }(\approx2020) $ MeV

${{\mathit N}{(1990)}}$ BREIT-WIGNER WIDTH   $200\text{ to }400\text{ }(\approx300) $ MeV

${{\mathit N}{(1990)}}$ PHOTON DECAY AMPLITUDES AT THE POLE

${{\mathit N}{(1990)}}$ $\rightarrow$ ${{\mathit p}}{{\mathit \gamma}}$ , helicity-1/2 amplitude A$_{1/2}$

${{\mathit N}{(1990)}}$ $\rightarrow$ ${{\mathit p}}{{\mathit \gamma}}$ , helicity-3/2 amplitude A$_{3/2}$

${{\mathit N}{(1990)}}$ $\rightarrow$ ${{\mathit n}}{{\mathit \gamma}}$ , helicity-1/2 amplitude A$_{1/2}$

${{\mathit N}{(1990)}}$ $\rightarrow$ ${{\mathit n}}{{\mathit \gamma}}$ , helicity-3/2 amplitude A$_{3/2}$

${{\mathit N}{(1990)}}$ BREIT-WIGNER PHOTON DECAY AMPLITUDES

${{\mathit N}{(1990)}}$ $\rightarrow$ ${{\mathit p}}{{\mathit \gamma}}$ , helicity-1/2 amplitude A$_{1/2}$

${{\mathit N}{(1990)}}$ $\rightarrow$ ${{\mathit p}}{{\mathit \gamma}}$ , helicity-3/2 amplitude A$_{3/2}$

${{\mathit N}{(1990)}}$ $\rightarrow$ ${{\mathit n}}{{\mathit \gamma}}$ , helicity-1/2 amplitude A$_{1/2}$

${{\mathit N}{(1990)}}$ $\rightarrow$ ${{\mathit n}}{{\mathit \gamma}}$ , helicity-3/2 amplitude A$_{3/2}$

${{\mathit N}{(1990)}}$ DECAY MODES
Mode   Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/ Conf. Level P(MeV/c)   $\Gamma_{1}$ ${{\mathit N}}{{\mathit \pi}}$   $2 - 6$ $\%$ 785   $\Gamma_{2}$ ${{\mathit N}}{{\mathit \eta}}$   $<$3 $\%$ 671   $\Gamma_{3}$ ${{\mathit \Lambda}}{{\mathit K}}$   $5.9 - 6.1$ $\%$ 581   $\Gamma_{4}$ ${{\mathit N}}{{\mathit \pi}}{{\mathit \pi}}$   764   $\Gamma_{5}$ ${{\mathit \Delta}}{{\mathit \pi}}$   $(72\pm{15})\%$ 624   $\Gamma_{6}$ ${{\mathit \Delta}}{{\mathit \pi}}$ , ${\mathit F}{\mathrm -wave}$   624   $\Gamma_{7}$ ${{\mathit N}}{{\mathit \rho}}$   $(10\pm{5})\%$ 533   $\Gamma_{8}$ ${{\mathit N}}{{\mathit \rho}}$ , $\mathit S$=1/2   $(8\pm{4})\%$ 533   $\Gamma_{9}$ ${{\mathit N}}{{\mathit \rho}}$ , $\mathit S$=3/2 , ${\mathit F}{\mathrm -wave}$   $(2.0\pm{2.0})\%$ 533   $\Gamma_{10}$ ${{\mathit N}{(1440)}}{{\mathit \pi}}$   $<2\%$ 483   $\Gamma_{11}$ ${{\mathit N}{(1520)}}{{\mathit \pi}}$ , ${\mathit P}{\mathrm -wave}$   $<2\%$ 425   $\Gamma_{12}$ ${{\mathit N}{(1535)}}{{\mathit \pi}}$   $<2\%$ 414   $\Gamma_{13}$ ${{\mathit p}}{{\mathit \gamma}}$   $0.01 - 0.12\%$ 792   $\Gamma_{14}$ ${{\mathit p}}{{\mathit \gamma}}$ , helicity=1/2   $0.003 - 0.042\%$ 792   $\Gamma_{15}$ ${{\mathit p}}{{\mathit \gamma}}$ , helicity=3/2   $0.009 - 0.075\%$ 792   $\Gamma_{16}$ ${{\mathit n}}{{\mathit \gamma}}$   $0.01 - 0.16\%$ 791   $\Gamma_{17}$ ${{\mathit n}}{{\mathit \gamma}}$ , helicity=1/2   $0.003 - 0.066\%$ 791   $\Gamma_{18}$ ${{\mathit n}}{{\mathit \gamma}}$ , helicity=3/2   $0.003 - 0.098\%$ 791
FOOTNOTES