${{\mathit \Delta}{(1232)}}$ POLE POSITIONS

$-2{\times }$IMAGINARY PART, MIXED CHARGES INSPIRE search

B033IM
VALUE (MeV) DOCUMENT ID TECN  COMMENT
$\bf{ 98\text{ to }102\text{ }(\approx100) }$ OUR ESTIMATE
$101$ $\pm2$
SARANTSEV
2025
DPWA Multichannel
$98.5$ $\pm1.2$ 1
HOFERICHTER
2024
RVUE ${{\mathit \pi}}$ ${{\mathit N}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit N}}$
$93$ $\pm1$
ROENCHEN
2022
DPWA Multichannel
$98$ $\pm2$ $\pm1$ 2
SVARC
2014
L+P ${{\mathit \pi}}$ ${{\mathit N}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit N}}$
$100$ $\pm2$
CUTKOSKY
1980
IPWA ${{\mathit \pi}}$ ${{\mathit N}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit N}}$
• • • We do not use the following data for averages, fits, limits, etc. • • •
$96.8$
HUNT
2019
DPWA Multichannel
$92$
ROENCHEN
2015A
 DPWA Multichannel
$99$ $\pm2$
ANISOVICH
2012A
 DPWA Multichannel
$99$
ARNDT
2006
DPWA ${{\mathit \pi}}$ ${{\mathit N}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit N}}$, ${{\mathit \eta}}{{\mathit N}}$
$100$
ARNDT
2004
DPWA ${{\mathit \pi}}$ ${{\mathit N}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit N}}$, ${{\mathit \eta}}{{\mathit N}}$
$100$ 3
HOEHLER
1993
ARGD ${{\mathit \pi}}$ ${{\mathit N}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit N}}$
1  Roy-Steiner equations applied to ${{\mathit \pi}}{{\mathit N}}$ scattering amplitudes and pionic atom data.
2  Fit to the amplitudes of HOEHLER 1979.
3  See HOEHLER 1993 for a detailed discussion of the evidence for and the pole parameters of ${{\mathit N}}$ and ${{\mathit \Delta}}$ resonances as determined from Argand diagrams of ${{\mathit \pi}}{{\mathit N}}$ elastic partial-wave amplitudes and from plots of the speeds with which the amplitudes traverse the diagrams.
  References:
SARANTSEV 2025
PR C112 015202 Decays of $N^*$ and $?^*$ resonances into $N?$, $??$, and $N?$
HOFERICHTER 2024
PL B853 138698 Nucleon resonance parameters from Roy-Steiner equations
ROENCHEN 2022
EPJ A58 229 Light baryon resonances from a coupled-channel study including $\mathbf{K\Sigma}$ photoproduction
HUNT 2019
PR C99 055205 Updated determination of $N^*$ resonance parameters using a unitary, multichannel formalism
ROENCHEN 2015A
EPJ A51 70 ${{\mathit \eta}}$ Photoproduction in a Combined Analysis of Pion- and Photon-Induced Reactions
SVARC 2014
PR C89 045205 Poles of Karlsruhe-Helsinki KH80 and KA84 Solutions Extracted by using the Laurent-Pietarinen Method
ANISOVICH 2012A
EPJ A48 15 Properties of Baryon Resonances from a Multichannel Partial Wave Analysis
ARNDT 2006
PR C74 045205 Extended Partial-Wave Analysis of ${{\mathit \pi}}{{\mathit N}}$ Scattering Data
ARNDT 2004
PR C69 035213 Dispersion Relation Constrained Partial Wave Analysis of ${{\mathit \pi}}{{\mathit N}}$ Elastic and ${{\mathit \pi}}$ ${{\mathit N}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit N}}$ Scattering Data: the Baryon Spectrum
HOEHLER 1993
${{\mathit \pi}}{{\mathit N}}$ Newsletter 9 1 Determination of ${{\mathit \pi}}{{\mathit N}}$ Resonance Pole Parameters
CUTKOSKY 1980
Toronto Conf. 19 Pion $−$ Nucleon Partial Wave Analysis
Also
PR D20 2839 Pion Nucleon Partial Wave Amplitudes