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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

${{\mathit N}{(1860)}}$ $I(J^P)$ = $1/2(5/2^{+})$

Before the 2012 $\mathit Review$, all the evidence for a $\mathit J{}^{P} = 5/2{}^{+}$ state with a mass above 1800 MeV was filed under a two-star ${{\mathit N}{(2000)}}$ . There is now some evidence from ANISOVICH 2012A for two ${}^{}5/2{}^{+}$ states in this region, so we have split the older data (according to mass) between two two-star ${}^{}5/2{}^{+}$ states, an ${{\mathit N}{(1860)}}$ and an ${{\mathit N}{(2000)}}$ .

${{\mathit N}{(1860)}}$ POLE POSITION

REAL PART

$-2{\times }$IMAGINARY PART

${{\mathit N}{(1860)}}$ ELASTIC POLE RESIDUE

MODULUS $\vert \mathit r\vert $

PHASE $\theta $

${{\mathit N}{(1860)}}$ BREIT-WIGNER MASS

${{\mathit N}{(1860)}}$ BREIT-WIGNER WIDTH

${{\mathit N}{(1860)}}$ BREIT-WIGNER PHOTON DECAY AMPLITUDES

${{\mathit N}{(1860)}}$ $\rightarrow$ ${{\mathit p}}{{\mathit \gamma}}$ , helicity-1/2 amplitude A$_{1/2}$

${{\mathit N}{(1860)}}$ $\rightarrow$ ${{\mathit p}}{{\mathit \gamma}}$ , helicity-3/2 amplitude A$_{3/2}$

${{\mathit N}{(1860)}}$ $\rightarrow$ ${{\mathit n}}{{\mathit \gamma}}$ , helicity-1/2 amplitude A$_{1/2}$

${{\mathit N}{(1860)}}$ $\rightarrow$ ${{\mathit n}}{{\mathit \gamma}}$ , helicity-3/2 amplitude A$_{3/2}$

${{\mathit N}{(1860)}}$ Decay Modes
Mode   Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/ Conf. Level P(MeV/c)   $\Gamma_{1}$ ${{\mathit N}}{{\mathit \pi}}$   $4 - 20$ $\%$ 685   $\Gamma_{2}$ ${{\mathit N}}{{\mathit \eta}}$   $0 - 6$ $\%$ 547   $\Gamma_{3}$ ${{\mathit \Lambda}}{{\mathit K}}$   $<$0.01 $\%$ 439   $\Gamma_{4}$ ${{\mathit N}}{{\mathit \pi}}{{\mathit \pi}}$   $>$61 $\%$ 660   $\Gamma_{5}$ ${{\mathit \Delta}}{{\mathit \pi}}$   $20 - 54$ $\%$ 509   $\Gamma_{6}$ ${{\mathit \Delta}}{{\mathit \pi}}$ , ${\mathit P}{\mathrm -wave}$   $4 - 16$ $\%$ 509   $\Gamma_{7}$ ${{\mathit \Delta}}{{\mathit \pi}}$ , ${\mathit F}{\mathrm -wave}$   $16 - 38$ $\%$ 509   $\Gamma_{8}$ ${{\mathit N}}{{\mathit \rho}}$   $<$8.6 $\%$ 360   $\Gamma_{9}$ ${{\mathit N}}{{\mathit \rho}}$ , $\mathit S$=3/2 , ${\mathit P}{\mathrm -wave}$   $<$8.5 $\%$ 360   $\Gamma_{10}$ ${{\mathit N}}{{\mathit \rho}}$ , $\mathit S$=3/2 , ${\mathit F}{\mathrm -wave}$   $<$0.1 $\%$ 360   $\Gamma_{11}$ ${{\mathit N}}{{\mathit \sigma}}$   $41 - 61$ $\%$ 539   $\Gamma_{12}$ ${{\mathit p}}{{\mathit \gamma}}$   693   $\Gamma_{13}$ ${{\mathit p}}{{\mathit \gamma}}$ , helicity=1/2   seen 693   $\Gamma_{14}$ ${{\mathit p}}{{\mathit \gamma}}$ , helicity=3/2   seen 693   $\Gamma_{15}$ ${{\mathit n}}{{\mathit \gamma}}$   $0.0017 - 0.062\%$ 693   $\Gamma_{16}$ ${{\mathit n}}{{\mathit \gamma}}$ , helicity=1/2   $0.0003 - 0.019\%$ 693   $\Gamma_{17}$ ${{\mathit n}}{{\mathit \gamma}}$ , helicity=3/2   $0.0014 - 0.043\%$ 693
FOOTNOTES