${{\mathit N}}$ 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.
${{\mathit N}{(1895)}}$ POLE POSITION
REAL PART   $1890\text{ to }1930\text{ }(\approx1910) $ MeV 
 
$-2{\times }$IMAGINARY PART   $80\text{ to }140\text{ }(\approx110) $ MeV 
 
${{\mathit N}{(1895)}}$ ELASTIC POLE RESIDUE
MODULUS $\vert \mathit r\vert $   $1\text{ to }5\text{ }(\approx3) $ MeV 
 
PHASE $\theta $
${{\mathit N}{(1895)}}$ 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\text{ to }1920\text{ }(\approx1895) $ MeV 
 
${{\mathit N}{(1895)}}$ BREIT-WIGNER WIDTH   $80\text{ to }200\text{ }(\approx120) $ MeV 
 
${{\mathit N}{(1895)}}$ 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$_{1/2}$
${{\mathit N}{(1895)}}$ 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$_{1/2}$
$\Gamma_{1}$ ${{\mathit N}}{{\mathit \pi}}$   $2 - 18\%$ 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
 
FOOTNOTES