# PRODUCED BY ${{\boldsymbol K}}$ BEAMS INSPIRE search

VALUE (MeV) DOCUMENT ID TECN CHG  COMMENT
$1270$ $\pm10$ 1
 1981 C
CNTR - 63 ${{\mathit K}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}^{-}}$2 ${{\mathit \pi}}{{\mathit p}}$
• • • We do not use the following data for averages, fits, limits, etc. • • •
$\sim$$1276 2  1982 B RVUE \sim$$1300$
 1979
HBC - 4.2 ${{\mathit K}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ( ${{\overline{\mathit K}}}{{\mathit \pi}}{{\mathit \pi}}$) ${}^{-}$ ${{\mathit p}}$
$1289$ $\pm25$ 3
 1977
ASPK $\pm{}$ 13 ${{\mathit K}^{\pm}}$ ${{\mathit p}}$ $\rightarrow$ ( ${{\mathit K}}{{\mathit \pi}}{{\mathit \pi}}$) ${}^{+-}$ ${{\mathit p}}$
$\sim$$1300  1976 ASPK \pm{} 13 {{\mathit K}^{\pm}} {{\mathit p}} \rightarrow ( {{\mathit K}}{{\mathit \pi}}{{\mathit \pi}}) {}^{+-} {{\mathit p}} \sim$$1270$
 1976
HBC - 10,14,16 ${{\mathit K}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ( ${{\overline{\mathit K}}}{{\mathit \pi}}{{\mathit \pi}}$) ${}^{-}$ ${{\mathit p}}$
$1260$
 1972
HBC + 12 ${{\mathit K}^{+}}{{\mathit p}}$
$1234$ $\pm12$
 1972 B
DBC + 12 ${{\mathit K}^{+}}{{\mathit d}}$
1  Well described in the chiral unitary approach of GENG 2007 with two poles at 1195 and 1284$~$MeV and widths of 246 and 146$~$MeV, respectively.
2  From a unitarized quark-model calculation.
3  From a model-dependent fit with Gaussian background to BRANDENBURG 1976 data.
References:
 TORNQVIST 1982B
NP B203 268 The Axial Mesons in the Unitarized Quark Model
 DAUM 1981C
NP B187 1 Diffractive Production of Strange Mesons at 63 GeV
 VERGEEST 1979
NP B158 265 Partial Wave Analysis in the ${{\mathit Q}}$-Region of (${{\overline{\mathit K}}}{{\mathit \pi}}{{\mathit \pi}}){}^{-}$ Systems Produced in ${{\mathit K}^{-}}{{\mathit p}}$ Reactions at 4.2 ${\mathrm {GeV/}}\mathit c$
 CARNEGIE 1977
NP B127 509 A Simple Description of the $\mathit J{}^{P} = 1+$ ${{\mathit K}^{\pm}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ System in the Reaction ${{\mathit K}^{\pm}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}^{\pm}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit p}}$
 BRANDENBURG 1976
PRL 36 703 Observation of Two Strangeness One Axial Vector Mesons
 OTTER 1976
NP B106 77 Evidence for Structure in the $1{}^{+}{}^{}$ State of the ${{\mathit Q}}$ Region
 DAVIS 1972
PR D5 2688 Investigation of Low Mass ${{\mathit K}}{{\mathit \pi}}{{\mathit \pi}}$ Systems in 12 ${\mathrm {GeV/}}\mathit c$ ${{\mathit K}^{+}}{{\mathit p}}$ Interactions
 FIRESTONE 1972B
PR D5 505 Coherent ${{\mathit K}^{+}}{{\mathit d}}$ Interactions at 12 ${\mathrm {GeV/}}\mathit c$