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

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

INSPIRE   PDGID:
B033IM
VALUE (MeV) DOCUMENT ID TECN  COMMENT
$\bf{ 98\text{ to }102\text{ }(\approx100) }$ OUR ESTIMATE
$93$ $\pm1$
ROENCHEN
2022
DPWA Multichannel
$98$ $\pm2$ $\pm1$ 1
SVARC
2014
L+P ${{\mathit \pi}}$ ${{\mathit N}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit N}}$
$99$ $\pm2$
ANISOVICH
2012A
DPWA Multichannel
$100$ $\pm2$
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
$100$ $\pm2$
ANISOVICH
2010
DPWA Multichannel
$99$
ARNDT
2006
DPWA ${{\mathit \pi}}$ ${{\mathit N}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit N}}$, ${{\mathit \eta}}{{\mathit N}}$
$100$
ARNDT
2004
DPWA ${{\mathit \pi}}$ ${{\mathit N}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit N}}$, ${{\mathit \eta}}{{\mathit N}}$
$100$ 2
HOEHLER
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