${{\mathit \pi}_{{{1}}}{(1600)}}$ WIDTH (${{\mathit \eta}}{{\mathit \pi}}$ mode) INSPIRE search

Not seen by PROKOSHKIN 1995B, BUGG 1994, APEL 1981, BOUTEMEUR 1990, and AGHASYAN 2018B.
M164WEP
VALUE (MeV) EVTS DOCUMENT ID TECN CHG  COMMENT
$\bf{ 330 \pm35}$ OUR AVERAGE
$354$ $\pm64$ $\pm58$ 23.5k
ADAMS
2007B
 B852 18 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \pi}^{0}}{{\mathit n}}$
$378$ $\pm50$ $\pm50$ 90k
SALVINI
2004
OBLX ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ 2 ${{\mathit \pi}^{+}}$2 ${{\mathit \pi}^{-}}$
$220$ $\pm90$
ABELE
1999
CBAR $0.0$ ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \eta}}$
$310$ $\pm50$ ${}^{+50}_{-30}$
ABELE
1998B
 CBAR 0.0 ${{\overline{\mathit p}}}$ ${{\mathit n}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{0}}{{\mathit \eta}}$
$385$ $\pm40$ ${}^{+65}_{-105}$ 1
THOMPSON
1997
MPS 18 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \pi}^{-}}{{\mathit p}}$
• • • We do not use the following data for averages, fits, limits, etc. • • •
$143.2$ $\pm12.5$ 2
AOYAGI
1993
BKEI ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \pi}^{-}}{{\mathit p}}$
$180$ $\pm20$ 3
ALDE
1988B
 GAM4 0 100 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \pi}^{0}}{{\mathit n}}$
1  Resolution is not unfolded, natural parity exchange, questioned by DZIERBA 2003.
2  Unnatural parity exchange.
3  Seen in the ${\mathit P}_{\mathrm 0}{\mathrm -wave}$ intensity of the ${{\mathit \eta}}{{\mathit \pi}^{0}}$ system, unnatural parity exchange.
  References:
ADAMS 2007B
PL B657 27 Confirmation of the $1-{}^{+}{}^{}$ Meson Exotics in the ${{\mathit \eta}}{{\mathit \pi}^{0}}$ System
SALVINI 2004
EPJ C35 21 ${{\overline{\mathit p}}}{{\mathit p}}$ Annihilation into Four Charged Pions at Rest and in Flight
ABELE 1999
PL B446 349 Evidence for a ${{\mathit \pi}}{{\mathit \eta}}{\mathit P}{\mathrm -wave}$ in ${{\overline{\mathit p}}}{{\mathit p}}$ Annihilations at Rest into ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \eta}}$
ABELE 1998B
PL B423 175 Exotic ${{\mathit \eta}}$ ${{\mathit \pi}}$ State in ${{\overline{\mathit p}}}$ ${{\mathit d}}$ Annihilation at Rest into ${{\mathit \pi}^{-}}$ ${{\mathit \pi}^{0}}$ ${{\mathit \eta}}$ ${{\mathit p}}_{spect.}$
THOMPSON 1997
PRL 79 1630 Evidence for Exotic Meson Production in the Reaction ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \pi}^{-}}{{\mathit p}}$ at 18 ${\mathrm {GeV/}}\mathit c$
AOYAGI 1993
PL B314 246 Study of the ${{\mathit \eta}}$ ${{\mathit \pi}^{-}}$ System in the ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ Reaction at 6.3 ${\mathrm {GeV/}}\mathit c$
ALDE 1988B
PL B205 397 Evidence for a $1-{}^{+}{}^{}$ Exotic Meson