# ${{\boldsymbol K}_{{1}}{(1400)}}$ WIDTH INSPIRE search

VALUE (MeV) EVTS DOCUMENT ID TECN CHG  COMMENT
$\bf{ 174 \pm13}$ OUR AVERAGE  Error includes scale factor of 1.6.
$300$ ${}^{+370}_{-110}$ $\pm140$ 7k
 2000 B
CLEO $\pm{}$ ${{\mathit \tau}^{-}}$ $\rightarrow$ ${{\mathit K}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \nu}_{{\tau}}}$
$188$ $\pm54$ $\pm60$ 1
 1987
LASS 0 11 ${{\mathit K}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\overline{\mathit K}}^{0}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit n}}$
$276$ $\pm65$
 1982 B
HBC 0 8.25 ${{\mathit K}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit n}}$
$195$ $\pm25$
 1981 C
CNTR - 63 ${{\mathit K}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}^{-}}$2 ${{\mathit \pi}}{{\mathit p}}$
$180$ $\pm10$
 1980
MPS 0 6 ${{\mathit K}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\overline{\mathit K}}^{0}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit n}}$
$142$ $\pm16$ 2
 1977
ASPK $\pm{}$ 13 ${{\mathit K}^{\pm}}$ ${{\mathit p}}$ $\rightarrow$ ( ${{\mathit K}}{{\mathit \pi}}{{\mathit \pi}}$) ${}^{+-}$ ${{\mathit p}}$
• • • We do not use the following data for averages, fits, limits, etc. • • •
$152$ $\pm16$ 25k 3
 2006 C
BES2 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\overline{\mathit K}}^{*}{(892)}^{0}}{{\mathit K}^{+}}{{\mathit \pi}^{-}}$
$\sim$$200  1979 HBC - 4.2 {{\mathit K}^{-}} {{\mathit p}} \rightarrow ( {{\overline{\mathit K}}}{{\mathit \pi}}{{\mathit \pi}}) {}^{-} {{\mathit p}} \sim$$160$
 1976
ASPK $\pm{}$ 13 ${{\mathit K}^{\pm}}$ ${{\mathit p}}$ $\rightarrow$ ( ${{\mathit K}}{{\mathit \pi}}{{\mathit \pi}}$) ${}^{+-}$ ${{\mathit p}}$
$80$
 1972
HBC + 12 ${{\mathit K}^{+}}{{\mathit p}}$
$241$ $\pm30$
 1972 B
DBC + 12 ${{\mathit K}^{+}}{{\mathit d}}$
1  From partial-wave analysis of ${{\mathit K}^{0}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ system.
2  From a model-dependent fit with Gaussian background to BRANDENBURG 1976 data.
3  Systematic errors not estimated.

${{\mathit K}_{{1}}{(1400)}}$ width (MeV)
References:
 ABLIKIM 2006C
PL B633 681 Evidence for ${{\mathit \kappa}}$ Meson Production in ${{\mathit J / \psi}}$ $\rightarrow$ ${{\overline{\mathit K}}^{*}{(892)}^{0}}{{\mathit K}^{+}}{{\mathit \pi}^{-}}$ Process
 ASNER 2000B
PR D62 072006 Resonance Structure of ${{\mathit \tau}^{-}}$ $\rightarrow$ ${{\mathit K}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \nu}_{{\tau}}}$ Decays
 ASTON 1987
NP B292 693 The Strange Meson Resonances Observed in the Reaction ${{\mathit K}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\overline{\mathit K}}^{0}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit n}}$ at 11 ${\mathrm {GeV/}}\mathit c$
 BAUBILLIER 1982B
NP B202 21 A Partial Wave Analysis of the ${{\overline{\mathit K}}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ System Produced in the Reaction ${{\mathit K}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\overline{\mathit K}}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit n}}$ at 8.25 ${\mathrm {GeV/}}\mathit c$
 DAUM 1981C
NP B187 1 Diffractive Production of Strange Mesons at 63 GeV
 ETKIN 1980
PR D22 42 Measurement and Partial Wave Analysis of the Reaction ${{\mathit K}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit n}}$ at 6 ${\mathrm {GeV/}}\mathit c$
 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
 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 ${\mathrm {GeV/}}\mathit c$