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${{\mathit K}_{{1}}{(1400)}}$ WIDTH

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M064W

VALUE (MeV) EVTS DOCUMENT ID TECN CHG  COMMENT $\bf{ 174 \pm13}$ OUR AVERAGE  Error includes scale factor of 1.6.  See the ideogram below. $300$ ${}^{+370}_{-110}$ $\pm140$ 7k ASNER 2000 B CLEO $\pm{}$ ${{\mathit \tau}^{-}}$ $\rightarrow$ ${{\mathit K}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \nu}_{{\tau}}}$ $188$ $\pm54$ $\pm60$ 1 ASTON 1987 LASS 0 11 ${{\mathit K}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\overline{\mathit K}}^{0}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit n}}$ $276$ $\pm65$ BAUBILLIER 1982 B HBC 0 8.25 ${{\mathit K}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit n}}$ $195$ $\pm25$ DAUM 1981 C CNTR - 63 ${{\mathit K}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}^{-}}$2 ${{\mathit \pi}}{{\mathit p}}$ $180$ $\pm10$ ETKIN 1980 MPS 0 6 ${{\mathit K}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\overline{\mathit K}}^{0}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit n}}$ $142$ $\pm16$ 2 CARNEGIE 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 ABLIKIM 2006 C BES2 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\overline{\mathit K}}^{*}{(892)}^{0}}{{\mathit K}^{+}}{{\mathit \pi}^{-}}$ $\sim$$200$ VERGEEST 1979 HBC - 4.2 ${{\mathit K}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ( ${{\overline{\mathit K}}}{{\mathit \pi}}{{\mathit \pi}}$) ${}^{-}$ ${{\mathit p}}$ $\sim$$160$ BRANDENBURG 1976 ASPK $\pm{}$ 13 ${{\mathit K}^{\pm}}$ ${{\mathit p}}$ $\rightarrow$ ( ${{\mathit K}}{{\mathit \pi}}{{\mathit \pi}}$) ${}^{+-}$ ${{\mathit p}}$ $80$ DAVIS 1972 HBC + 12 ${{\mathit K}^{+}}{{\mathit p}}$ $241$ $\pm30$ FIRESTONE 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 ${\mathrm {GeV/}}\mathit c$