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

VALUE (MeV) DOCUMENT ID TECN  COMMENT
 $\bf{ 98\text{ to }102\text{ }(\approx100) }$ OUR ESTIMATE
$98$ $\pm2$ $\pm1$ 1
 2014
L+P ${{\mathit \pi}}$ ${{\mathit N}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit N}}$
$99$ $\pm2$
 2012 A
DPWA Multichannel
$100$ $\pm2$
 1980
IPWA ${{\mathit \pi}}$ ${{\mathit N}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit N}}$
• • We do not use the following data for averages, fits, limits, etc. • •
$96.8$
 2019
DPWA Multichannel
$92$
 2015 A
DPWA Multichannel
$100$ $\pm2$
 2010
DPWA Multichannel
$99$
 2006
DPWA ${{\mathit \pi}}$ ${{\mathit N}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit N}}$ , ${{\mathit \eta}}{{\mathit N}}$
$100$
 2004
DPWA ${{\mathit \pi}}$ ${{\mathit N}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit N}}$ , ${{\mathit \eta}}{{\mathit N}}$
$100$ 2
 1993
ARGD ${{\mathit \pi}}$ ${{\mathit N}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit N}}$
 1 Fit to the amplitudes of HOEHLER 1979 .
 2 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:
 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
 ANISOVICH 2010
EPJ A44 203 Photoproduction of Pions and Properties of Baryon Resonances from a Bonn-Gatchina 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
#d{pi 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