pdgLive Home   >   Baryon Summary Table   >   ${{\mathit \Delta}{(1950)}}$

${{\mathit \Delta}}$ BARYONS ($\mathit S$ = 0, $\mathit I$ = 3/2) ${{\mathit \Delta}^{++}}$ = ${{\mathit u}}{{\mathit u}}{{\mathit u}}$, ${{\mathit \Delta}^{+}}$ = ${\mathit {\mathit u}}$ ${\mathit {\mathit u}}$ ${\mathit {\mathit d}}$, ${{\mathit \Delta}^{0}}$ = ${\mathit {\mathit u}}$ ${\mathit {\mathit d}}$ ${\mathit {\mathit d}}$, ${{\mathit \Delta}^{-}}$ = ${\mathit {\mathit d}}$ ${\mathit {\mathit d}}$ ${\mathit {\mathit d}}$

INSPIRE   JSON PDGID: B083

${{\mathit \Delta}{(1950)}}$ $I(J^P)$ = $3/2(7/2^{+})$

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

Expand/Collapse All

▸  exp ${{\mathit \Delta}{(1950)}}$ POLE POSITION

REAL PART 1870 TO 1890 $(\approx 1880 )$ MeV

$-2{\times }$IMAGINARY PART 220 TO 260 $(\approx 240 )$ MeV

▸  exp ${{\mathit \Delta}{(1950)}}$ ELASTIC POLE RESIDUE

MODULUS $\vert \mathit r\vert $ 44 TO 60 $(\approx 52 )$ MeV

PHASE $\theta $ -40 TO -24 $(\approx -32 )$ $^\circ{}$

▸  exp ${{\mathit \Delta}{(1950)}}$ INELASTIC POLE RESIDUE

Normalized residue in ${{\mathit N}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit \Delta}{(1950)}}$ $\rightarrow$ ${{\mathit \Sigma}}{{\mathit K}}$

Normalized residue in ${{\mathit N}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit \Delta}{(1950)}}$ $\rightarrow$ ${{\mathit \Delta}}{{\mathit \pi}}$, ${\mathit F}{\mathrm -wave}$

Normalized residue in ${{\mathit N}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit \Delta}{(1950)}}$ $\rightarrow$ ${{\mathit \Delta}}{{\mathit \pi}}$, ${\mathit H}{\mathrm -wave}$

Normalized residue in ${{\mathit N}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit \Delta}{(1950)}}$ $\rightarrow$ ${{\mathit \Delta}{(1232)}}{{\mathit \eta}}$

${{\mathit \Delta}{(1950)}}$ BREIT-WIGNER MASS 1915 TO 1950 $(\approx 1930 )$ MeV

${{\mathit \Delta}{(1950)}}$ BREIT-WIGNER WIDTH 235 TO 335 $(\approx 285 )$ MeV

▸  exp ${{\mathit \Delta}{(1950)}}$ PHOTON DECAY AMPLITUDES AT THE POLE

${{\mathit \Delta}{(1950)}}$ $\rightarrow$ ${{\mathit N}}{{\mathit \gamma}}$ , helicity-1/2 amplitude A$_{1/2}$

${{\mathit \Delta}{(1950)}}$ $\rightarrow$ ${{\mathit N}}{{\mathit \gamma}}$ , helicity-3/2 amplitude A$_{3/2}$

▸  exp ${{\mathit \Delta}{(1950)}}$ BREIT-WIGNER PHOTON DECAY AMPLITUDES

${{\mathit \Delta}{(1950)}}$ $\rightarrow$ ${{\mathit N}}{{\mathit \gamma}}$ , helicity-1/2 amplitude A$_{1/2}$ -0.075 TO -0.065 $(\approx -0.070 )$ GeV${}^{−1/2}$

${{\mathit \Delta}{(1950)}}$ $\rightarrow$ ${{\mathit N}}{{\mathit \gamma}}$ , helicity-3/2 amplitude A$_{3/2}$ -0.100 TO -0.080 $(\approx -0.090 )$ GeV${}^{−1/2}$

${{\mathit \Delta}{(1950)}}$ 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)   $\Gamma_{1}$ ${{\mathit N}}{{\mathit \pi}}$ $(35 - 45) \%$ 729   $\Gamma_{2}$ ${{\mathit \Sigma}}{{\mathit K}}$ $(0.3 - 0.5) \%$ 441   $\Gamma_{3}$ ${{\mathit N}}{{\mathit \pi}}{{\mathit \pi}}$ $(37 - 77) \%$ 706   $\Gamma_{4}$ ${{\mathit \Delta}{(1232)}}{{\mathit \pi}}$ , ${\mathit F}{\mathrm -wave}$ $(1 - 9) \%$ 560   $\Gamma_{5}$ ${{\mathit N}{(1680)}}{{\mathit \pi}}$ , ${\mathit P}{\mathrm -wave}$ $(3 - 9) \%$ 191   $\Gamma_{6}$ ${{\mathit \Delta}{(1232)}}{{\mathit \eta}}$ < 0.6 $\%$ 349   $\Gamma_{7}$ ${{\mathit N}}{{\mathit \gamma}}$ $(0.06 - 0.14) \%$ 737   $\Gamma_{8}$ ${{\mathit N}}{{\mathit \gamma}}$ , helicity=1/2 $(0.03 - 0.05) \%$ 737   $\Gamma_{9}$ ${{\mathit N}}{{\mathit \gamma}}$ , helicity=3/2 $(0.04 - 0.09) \%$ 737