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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).

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

REAL PART

$-2{\times }$IMAGINARY PART

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

MODULUS $\vert \mathit r\vert $

PHASE $\theta $

▸  exp ${{\mathit \Delta}{(1990)}}$ 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 to 2100 $(\approx 2020 )$ MeV

${{\mathit N}{(1990)}}$ BREIT-WIGNER WIDTH 200 to 400 $(\approx 300 )$ MeV

▸  exp ${{\mathit N}{(1990)}}$ 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$_{3/2}$

▸  exp ${{\mathit N}{(1990)}}$ 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   $\Gamma_{5}$ ${{\mathit \Delta}}{{\mathit \pi}}$ ($72$ $\pm15$ ) $\%$ 624   $\Gamma_{6}$ ${{\mathit \Delta}}{{\mathit \pi}}$ , ${\mathit F}{\mathrm -wave}$ 624   $\Gamma_{7}$ ${{\mathit N}}{{\mathit \rho}}$ ($10$ $\pm5$ ) $\%$ 533   $\Gamma_{8}$ ${{\mathit N}}{{\mathit \rho}}$ , $\mathit S$=1/2 ($8$ $\pm4$ ) $\%$ 533   $\Gamma_{9}$ ${{\mathit N}}{{\mathit \rho}}$ , $\mathit S$=3/2 , ${\mathit F}{\mathrm -wave}$ ($2.0$ $\pm2.0$ ) $\%$ 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