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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: B015

${{\mathit N}{(1720)}}$ $I(J^P)$ = $1/2(3/2^{+})$

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

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▸  exp ${{\mathit N}{(1720)}}$ POLE POSITION

REAL PART 1660 TO 1710 $(\approx 1680 )$ MeV

$-2{\times }$IMAGINARY PART 150 TO 300 $(\approx 200 )$ MeV

▸  exp ${{\mathit N}{(1720)}}$ ELASTIC POLE RESIDUE

MODULUS $\vert \mathit r\vert $ 10 TO 25 $(\approx 15 )$ MeV

PHASE $\theta $ -160 TO -60 $(\approx -110 )$ $^\circ{}$

▸  exp ${{\mathit N}{(1720)}}$ INELASTIC POLE RESIDUE

Normalized residue in ${{\mathit N}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit N}{(1720)}}$ $\rightarrow$ ${{\mathit N}}{{\mathit \eta}}$

Normalized residue in ${{\mathit N}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit N}{(1720)}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit K}}$

Normalized residue in ${{\mathit N}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit N}{(1720)}}$ $\rightarrow$ ${{\mathit \Sigma}}{{\mathit K}}$ $0.059$ $\pm0.005$

Normalized residue in ${{\mathit N}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit N}{(1720)}}$ $\rightarrow$ ${{\mathit \Delta}}{{\mathit \pi}}$, ${\mathit P}{\mathrm -wave}$

Normalized residue in ${{\mathit N}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit N}{(1720)}}$ $\rightarrow$ ${{\mathit \Delta}}{{\mathit \pi}}$, ${\mathit F}{\mathrm -wave}$

Normalized residue in ${{\mathit N}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit N}{(1720)}}$ $\rightarrow$ ${{\mathit N}}{{\mathit \sigma}}$

Normalized residue in ${{\mathit N}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit N}{(1720)}}$ $\rightarrow$ ${{\mathit N}{(1520)}}{{\mathit \pi}}$, ${\mathit S}{\mathrm -wave}$

${{\mathit N}{(1720)}}$ BREIT-WIGNER MASS 1680 TO 1750 $(\approx 1720 )$ MeV

${{\mathit N}{(1720)}}$ BREIT-WIGNER WIDTH 150 TO 400 $(\approx 250 )$ MeV

▸  exp ${{\mathit N}{(1720)}}$ PHOTON DECAY AMPLITUDES AT THE POLE

${{\mathit N}{(1720)}}$ $\rightarrow$ ${{\mathit p}}{{\mathit \gamma}}$ , helicity-1/2 amplitude A$_{1/2}$

${{\mathit N}{(1720)}}$ $\rightarrow$ ${{\mathit p}}{{\mathit \gamma}}$ , helicity-3/2 amplitude A$_{3/2}$

${{\mathit N}{(1720)}}$ $\rightarrow$ ${{\mathit n}}{{\mathit \gamma}}$ , helicity-1/2 amplitude A$_{1/2}$

${{\mathit N}{(1720)}}$ $\rightarrow$ ${{\mathit n}}{{\mathit \gamma}}$ , helicity-3/2 amplitude A$_{3/2}$

▸  exp ${{\mathit N}{(1720)}}$ BREIT-WIGNER PHOTON DECAY AMPLITUDES

${{\mathit N}{(1720)}}$ $\rightarrow$ ${{\mathit p}}{{\mathit \gamma}}$ , helicity-1/2 amplitude A$_{1/2}$ 0.080 TO 0.120 $(\approx 0.100 )$ GeV${}^{−1/2}$

${{\mathit N}{(1720)}}$ $\rightarrow$ ${{\mathit p}}{{\mathit \gamma}}$ , helicity-3/2 amplitude A$_{3/2}$

${{\mathit N}{(1720)}}$ $\rightarrow$ ${{\mathit n}}{{\mathit \gamma}}$ , helicity-1/2 amplitude A$_{1/2}$

${{\mathit N}{(1720)}}$ $\rightarrow$ ${{\mathit n}}{{\mathit \gamma}}$ , helicity-3/2 amplitude A$_{3/2}$

${{\mathit N}{(1720)}}$ DECAY MODES
The following branching fractions are our estimates, not fits or averages.
Mode   Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/ Conf. Level P(MeV/c)   $\Gamma_{1}$ ${{\mathit N}}{{\mathit \pi}}$ $(8 - 14) \%$ 594   $\Gamma_{2}$ ${{\mathit N}}{{\mathit \eta}}$ $(1 - 5) \%$ 422   $\Gamma_{3}$ ${{\mathit N}}{{\mathit \omega}}$ $(12 - 40) \%$ -1   $\Gamma_{4}$ ${{\mathit \Lambda}}{{\mathit K}}$ $(4 - 19) \%$ 283   $\Gamma_{5}$ ${{\mathit N}}{{\mathit \pi}}{{\mathit \pi}}$ >50 $\%$ 564   $\Gamma_{6}$ ${{\mathit \Delta}{(1232)}}{{\mathit \pi}}$ $(47 - 89) \%$ 402   $\Gamma_{7}$ ${{\mathit \Delta}{(1232)}}{{\mathit \pi}}$ , ${\mathit P}{\mathrm -wave}$ $(47 - 77) \%$ 402   $\Gamma_{8}$ ${{\mathit \Delta}{(1232)}}{{\mathit \pi}}$ , ${\mathit F}{\mathrm -wave}$ <12 $\%$ 402   $\Gamma_{9}$ ${{\mathit N}}{{\mathit \rho}}$ 75   $\Gamma_{10}$ ${{\mathit N}}{{\mathit \rho}}$ , $\mathit S$=1/2, ${\mathit P}{\mathrm -wave}$ $(1 - 2) \%$ 75   $\Gamma_{11}$ ${{\mathit N}}{{\mathit \sigma}}$ $(2 - 14) \%$     $\Gamma_{12}$ ${{\mathit N}{(1440)}}{{\mathit \pi}}$ <2 $\%$ 225   $\Gamma_{13}$ ${{\mathit N}{(1520)}}{{\mathit \pi}}$ , ${\mathit S}{\mathrm -wave}$ $(1 - 5) \%$ 145   $\Gamma_{14}$ ${{\mathit p}}{{\mathit \gamma}}$ $(0.05 - 0.25) \%$ 604   $\Gamma_{15}$ ${{\mathit p}}{{\mathit \gamma}}$ , helicity=1/2 $(0.05 - 0.15) \%$ 604   $\Gamma_{16}$ ${{\mathit p}}{{\mathit \gamma}}$ , helicity=3/2 $(0.002 - 0.16) \%$ 604   $\Gamma_{17}$ ${{\mathit n}}{{\mathit \gamma}}$ $(0.0 - 0.016) \%$ 603   $\Gamma_{18}$ ${{\mathit n}}{{\mathit \gamma}}$ , helicity=1/2 $(0.0 - 0.01) \%$ 603   $\Gamma_{19}$ ${{\mathit n}}{{\mathit \gamma}}$ , helicity=3/2 $(0.0 - 0.015) \%$ 603