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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: B062

${{\mathit N}{(1520)}}$ $I(J^P)$ = $1/2(3/2^{-})$

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

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▸  exp ${{\mathit N}{(1520)}}$ POLE POSITION

REAL PART 1505 TO 1515 $(\approx 1510 )$ MeV

$-2{\times }$IMAGINARY PART 105 TO 120 $(\approx 110 )$ MeV

▸  exp ${{\mathit N}{(1520)}}$ ELASTIC POLE RESIDUE

MODULUS $\vert \mathit r\vert $ 32 TO 38 $(\approx 35 )$ MeV

PHASE $\theta $ -15 TO -5 $(\approx -10 )$ $^\circ{}$

▸  exp ${{\mathit N}{(1520)}}$ INELASTIC POLE RESIDUE

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

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

Normalized residue in ${{\mathit N}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit N}{(1520)}}$ $\rightarrow$ ${{\mathit N}}{{\mathit \eta}}$

Normalized residue in ${{\mathit N}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit N}{(1520)}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit K}}$

Normalized residue in ${{\mathit N}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit N}{(1520)}}$ $\rightarrow$ ${{\mathit \Sigma}}{{\mathit K}}$

Normalized residue in ${{\mathit N}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit N}{(1520)}}$ $\rightarrow$ ${{\mathit N}}{{\mathit \sigma}}$

${{\mathit N}{(1520)}}$ BREIT-WIGNER MASS 1510 TO 1520 $(\approx 1515 )$ MeV

${{\mathit N}{(1520)}}$ BREIT-WIGNER WIDTH 100 TO 120 $(\approx 110 )$ MeV

▸  exp ${{\mathit N}{(1520)}}$ PHOTON DECAY AMPLITUDES AT THE POLE

${{\mathit N}{(1520)}}$ $\rightarrow$ ${{\mathit p}}{{\mathit \gamma}}$ , helicity-1/2 amplitude A$_{1/2}$

${{\mathit N}{(1520)}}$ $\rightarrow$ ${{\mathit p}}{{\mathit \gamma}}$ , helicity-3/2 amplitude A$_{3/2}$

${{\mathit N}{(1520)}}$ $\rightarrow$ ${{\mathit n}}{{\mathit \gamma}}$ , helicity-1/2 amplitude A$_{1/2}$

${{\mathit N}{(1520)}}$ $\rightarrow$ ${{\mathit n}}{{\mathit \gamma}}$ , helicity-3/2 amplitude A$_{3/2}$

▸  exp ${{\mathit N}{(1520)}}$ BREIT-WIGNER PHOTON DECAY AMPLITUDES

${{\mathit N}{(1520)}}$ $\rightarrow$ ${{\mathit p}}{{\mathit \gamma}}$ , helicity-1/2 amplitude A$_{1/2}$ -0.030 TO -0.015 $(\approx -0.025 )$ GeV${}^{−1/2}$

${{\mathit N}{(1520)}}$ $\rightarrow$ ${{\mathit p}}{{\mathit \gamma}}$ , helicity-3/2 amplitude A$_{3/2}$ 0.135 TO 0.145 $(\approx 0.140 )$ GeV${}^{−1/2}$

${{\mathit N}{(1520)}}$ $\rightarrow$ ${{\mathit n}}{{\mathit \gamma}}$ , helicity-1/2 amplitude A$_{1/2}$ -0.055 TO -0.040 $(\approx -0.050 )$ GeV${}^{−1/2}$

${{\mathit N}{(1520)}}$ $\rightarrow$ ${{\mathit n}}{{\mathit \gamma}}$ , helicity-3/2 amplitude A$_{3/2}$ -0.120 TO -0.100 $(\approx -0.115 )$ GeV${}^{−1/2}$

${{\mathit N}{(1520)}}$ 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)   $\Gamma_{1}$ ${{\mathit N}}{{\mathit \pi}}$ $(55 - 65) \%$ 453   $\Gamma_{2}$ ${{\mathit N}}{{\mathit \eta}}$ $(0.07 - 0.09) \%$ 142   $\Gamma_{3}$ ${{\mathit N}}{{\mathit \pi}}{{\mathit \pi}}$ $(25 - 35) \%$ 410   $\Gamma_{4}$ ${{\mathit \Delta}{(1232)}}{{\mathit \pi}}$ $(22 - 34) \%$ 225   $\Gamma_{5}$ ${{\mathit \Delta}{(1232)}}{{\mathit \pi}}$ , ${\mathit S}{\mathrm -wave}$ $(15 - 23) \%$ 225   $\Gamma_{6}$ ${{\mathit \Delta}{(1232)}}{{\mathit \pi}}$ , ${\mathit D}{\mathrm -wave}$ $(7 - 11) \%$ 225   $\Gamma_{7}$ ${{\mathit N}}{{\mathit \rho}}$ $(10 - 16) \%$ -1   $\Gamma_{8}$ ${{\mathit N}}{{\mathit \rho}}$ , $\mathit S$=3/2 , ${\mathit S}{\mathrm -wave}$ $(10 - 16) \%$ -1   $\Gamma_{9}$ ${{\mathit N}}{{\mathit \rho}}$ , $\mathit S$=1/2 , ${\mathit D}{\mathrm -wave}$ $(0.2 - 0.4) \%$ -1   $\Gamma_{10}$ ${{\mathit N}}{{\mathit \sigma}}$ <10 $\%$     $\Gamma_{11}$ ${{\mathit p}}{{\mathit \gamma}}$ $(0.31 - 0.52) \%$ 467   $\Gamma_{12}$ ${{\mathit p}}{{\mathit \gamma}}$ , helicity=1/2 $(0.01 - 0.02) \%$ 467   $\Gamma_{13}$ ${{\mathit p}}{{\mathit \gamma}}$ , helicity=3/2 $(0.30 - 0.50) \%$ 467   $\Gamma_{14}$ ${{\mathit n}}{{\mathit \gamma}}$ $(0.30 - 0.53) \%$ 466   $\Gamma_{15}$ ${{\mathit n}}{{\mathit \gamma}}$ , helicity=1/2 $(0.04 - 0.10) \%$ 466   $\Gamma_{16}$ ${{\mathit n}}{{\mathit \gamma}}$ , helicity=3/2 $(0.25 - 0.45) \%$ 466