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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: B004

${{\mathit N}{(1895)}}$ $I(J^P)$ = $1/2(1/2^{-})$

was ${{\mathit N}{(2090)}}$

Before our 2012 $\mathit Review$, this state appeared in our Listings as the ${{\mathit N}{(2090)}}$. Any structure in the ${\mathit S}_{\mathrm 11}{\mathrm wave}$ above 1800 MeV is listed here. A few early results that are now obsolete have been omitted.

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▸  exp ${{\mathit N}{(1895)}}$ POLE POSITION

REAL PART 1890 TO 1930 $(\approx 1910 )$ MeV

$-2{\times }$IMAGINARY PART 80 TO 140 $(\approx 110 )$ MeV

▸  exp ${{\mathit N}{(1895)}}$ ELASTIC POLE RESIDUE

MODULUS $\vert \mathit r\vert $ 1 TO 5 $(\approx 3 )$ MeV

PHASE $\theta $

▸  exp ${{\mathit N}{(1895)}}$ INELASTIC POLE RESIDUE

Normalized residue in ${{\mathit N}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit N}{(1895)}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit K}}$

Normalized residue in ${{\mathit N}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit N}{(1895)}}$ $\rightarrow$ ${{\mathit \Sigma}}{{\mathit K}}$

Normalized residue in ${{\mathit N}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit N}{(1895)}}$ $\rightarrow$ ${{\mathit \Delta}{(1232)}}{{\mathit \pi}}$

Normalized residue in ${{\mathit N}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit N}{(1895)}}$ $\rightarrow$ ${{\mathit N}{(1440)}}{{\mathit \pi}}$

${{\mathit N}{(1895)}}$ BREIT-WIGNER MASS 1870 TO 1920 $(\approx 1895 )$ MeV

${{\mathit N}{(1895)}}$ BREIT-WIGNER WIDTH 80 TO 200 $(\approx 120 )$ MeV

▸  exp ${{\mathit N}{(1895)}}$ PHOTON DECAY AMPLITUDES AT THE POLE

${{\mathit N}{(1895)}}$ $\rightarrow$ ${{\mathit p}}{{\mathit \gamma}}$ , helicity-1/2 amplitude A$_{1/2}$

${{\mathit N}{(1895)}}$ $\rightarrow$ ${{\mathit n}}{{\mathit \gamma}}$ , helicity-1/2 amplitude A$_{1/2}$

▸  exp ${{\mathit N}{(1895)}}$ BREIT-WIGNER PHOTON DECAY AMPLITUDES

${{\mathit N}{(1895)}}$ $\rightarrow$ ${{\mathit p}}{{\mathit \gamma}}$ , helicity-1/2 amplitude A$_{1/2}$

${{\mathit N}{(1895)}}$ $\rightarrow$ ${{\mathit n}}{{\mathit \gamma}}$ , helicity-1/2 amplitude A$_{1/2}$

${{\mathit N}{(1895)}}$ DECAY MODES

Mode   Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/ Conf. Level P(MeV/c)   $\Gamma_{1}$ ${{\mathit N}}{{\mathit \pi}}$ $(2 - 18) \%$ 707   $\Gamma_{2}$ ${{\mathit N}}{{\mathit \eta}}$ $(15 - 45) \%$ 575   $\Gamma_{3}$ ${{\mathit N}}{{\mathit \eta}^{\,'}}$ $(10 - 40) \%$ -1   $\Gamma_{4}$ ${{\mathit N}}{{\mathit \omega}}$ $(16 - 40) \%$ 395   $\Gamma_{5}$ ${{\mathit \Lambda}}{{\mathit K}}$ $(3 - 23) \%$ 473   $\Gamma_{6}$ ${{\mathit \Sigma}}{{\mathit K}}$ $(6 - 20) \%$ 405   $\Gamma_{7}$ ${{\mathit N}}{{\mathit \pi}}{{\mathit \pi}}$ $(17 - 74) \%$ 683   $\Gamma_{8}$ ${{\mathit \Delta}{(1232)}}{{\mathit \pi}}$ , ${\mathit D}{\mathrm -wave}$ $(3 - 11) \%$ 535   $\Gamma_{9}$ ${{\mathit N}}{{\mathit \rho}}$ $(14 - 50) \%$ 403   $\Gamma_{10}$ ${{\mathit N}}{{\mathit \rho}}$ , $\mathit S$=1/2, ${\mathit S}{\mathrm -wave}$ <18 $\%$ 403   $\Gamma_{11}$ ${{\mathit N}}{{\mathit \rho}}$ , $\mathit S$=3/2, ${\mathit D}{\mathrm -wave}$ $(14 - 32) \%$ 403   $\Gamma_{12}$ ${{\mathit N}}{{\mathit \sigma}}$ <13 $\%$     $\Gamma_{13}$ ${{\mathit N}{(1440)}}{{\mathit \pi}}$ $(2 - 12) \%$ 382   $\Gamma_{14}$ ${{\mathit \Lambda}}{{\mathit K}^{*}{(892)}}$ $(4 - 9) \%$ -1   $\Gamma_{15}$ ${{\mathit p}}{{\mathit \gamma}}$ , helicity=1/2 $(0.01 - 0.06) \%$ 715   $\Gamma_{16}$ ${{\mathit n}}{{\mathit \gamma}}$ , helicity=1/2 $(0.003 - 0.05) \%$ 715