${{\mathit \pi}_{{{1}}}{(1600)}}$ MASS (non-${{\mathit \eta}}{{\mathit \pi}}$ mode)

INSPIRE   JSON  (beta) PDGID:
M164M
VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT
$\bf{ 1645 {}^{+40}_{-17}}$ OUR AVERAGE  Error includes scale factor of 1.3.  See the ideogram below.
$1600$ ${}^{+110}_{-60}$ 46M 1
AGHASYAN
2018B
 COMP 190 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit p}}$
$1709$ $\pm24$ $\pm41$ 69k 2
KUHN
2004
B852 18 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{-}}{{\mathit p}}$
$1597$ $\pm10$ ${}^{+45}_{-10}$ 2
IVANOV
2001
B852 18 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \eta}^{\,'}}{{\mathit \pi}^{-}}{{\mathit p}}$
• • We do not use the following data for averages, fits, limits, etc. • •
$1660$ $\pm10$ ${}^{+0}_{-64}$ 420k 3
ALEKSEEV
2010
COMP 190 ${{\mathit \pi}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit P}}{{\mathit b}^{\,'}}$
$1664$ $\pm8$ $\pm10$ 145k 4
LU
2005
B852 18 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \omega}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}{{\mathit p}}$
$1593$ $\pm8$ ${}^{+29}_{-47}$ 2, 5
ADAMS
1998B
 B852 $18.3$ ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{-}}{{\mathit p}}$
1  Statistical error negligible. See also the review ALEXEEV 2022.
2  Natural parity exchange.
3  Superseded by AGHASYAN 2018B.
4  May be a different state: natural and unnatural parity exchanges.
5  Superseded by DZIERBA 2006 excluding this state in a more refined PWA analysis, with 2.6 M events of ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit p}}$ and 3 M events of ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit p}}$ of E852 data.

           ${{\mathit \pi}_{{{1}}}{(1600)}}$ mass (non-${{\mathit \eta}}{{\mathit \pi}}$ mode) (MeV)
References