${{\mathit f}_{{1}}{(1420)}}$ MASS

INSPIRE   PDGID:
M006M2
VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT
$\bf{ 1426.3 \pm0.9}$ OUR AVERAGE  Error includes scale factor of 1.1.
$1434$ $\pm5$ $\pm5$ 133 1
ACHARD
2007
L3 $183 - 209$ ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}{{\mathit K}_S^0}$ ${{\mathit K}^{\pm}}{{\mathit \pi}^{\mp}}$
$1426$ $\pm6$ 711
ABDALLAH
2003H
 DLPH 91.2 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}^{\pm}}{{\mathit \pi}^{\mp}}{+}$ ${{\mathit X}}$
$1420$ $\pm14$ 3651
NICHITIU
2002
OBLX 0 ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$
$1428$ $\pm4$ $\pm2$ 20k
ADAMS
2001B
 B852 18 GeV ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{0}}{{\mathit n}}$
$1426$ $\pm1$
BARBERIS
1997C
 OMEG 450 ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}}{{\mathit p}}{{\mathit K}_S^0}$ ${{\mathit K}^{\pm}}{{\mathit \pi}^{\mp}}$
$1425$ $\pm8$
BERTIN
1997
OBLX 0.0 ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}^{\pm}}$( ${{\mathit K}^{0}}$) ${{\mathit \pi}^{\mp}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$
$1430$ $\pm4$ 2
ARMSTRONG
1992E
 OMEG 85,300 ${{\mathit \pi}^{+}}{{\mathit p}}$ , ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit p}}$ , ${{\mathit p}}{{\mathit p}}$( ${{\mathit K}}{{\overline{\mathit K}}}{{\mathit \pi}}$)
$1462$ $\pm20$ 3
AUGUSTIN
1992
DM2 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit K}}{{\overline{\mathit K}}}{{\mathit \pi}}$
$1443$ ${}^{+7}_{-6}$ ${}^{+3}_{-2}$ 1100
BAI
1990C
 MRK3 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit K}_S^0}$ ${{\mathit K}^{\pm}}{{\mathit \pi}^{\mp}}$
$1425$ $\pm10$ 17
BEHREND
1989
CELL ${{\mathit \gamma}}$ ${{\mathit \gamma}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}^{\pm}}{{\mathit \pi}^{\mp}}$
$1442$ $\pm5$ ${}^{+10}_{-17}$ $111$
BECKER
1987
MRK3 ${{\mathit e}^{+}}{{\mathit e}^{-}}$ , ${{\mathit \omega}}{{\mathit K}}{{\overline{\mathit K}}}{{\mathit \pi}}$
$1423$ $\pm4$
GIDAL
1987B
 MRK2 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}{{\mathit K}}{{\overline{\mathit K}}}{{\mathit \pi}}$
$1417$ $\pm13$ 13
AIHARA
1986C
 TPC ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}{{\mathit K}}{{\overline{\mathit K}}}{{\mathit \pi}}$
$1422$ $\pm3$
CHAUVAT
1984
SPEC ISR 31.5 ${{\mathit p}}{{\mathit p}}$
$1440$ $\pm10$ 4
BROMBERG
1980
SPEC 100 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}}{{\overline{\mathit K}}}{{\mathit \pi}}$ X
$1426$ $\pm6$ 221
DIONISI
1980
HBC 4 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}}{{\overline{\mathit K}}}{{\mathit \pi}}{{\mathit n}}$
$1420$ $\pm20$
DAHL
1967
HBC 1.6$-$4.2 ${{\mathit \pi}^{-}}{{\mathit p}}$
• • We do not use the following data for averages, fits, limits, etc. • •
$1430.8$ $\pm0.9$ 5
SOSA
1999
SPEC ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}}_{{\mathrm {slow}}}$ ( ${{\mathit K}_S^0}$ ${{\mathit K}^{+}}{{\mathit \pi}^{-}}$ ) ${{\mathit p}}_{{\mathrm {fast}}}$
$1433.4$ $\pm0.8$ 5
SOSA
1999
SPEC ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}}_{{\mathrm {slow}}}$ ( ${{\mathit K}_S^0}$ ${{\mathit K}^{-}}{{\mathit \pi}^{+}}$ ) ${{\mathit p}}_{{\mathrm {fast}}}$
$1435$ $\pm9$
PROKOSHKIN
1997B
 GAM4 100 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit n}}$
$1429$ $\pm3$ $389$
ARMSTRONG
1989
OMEG 300 ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}}{{\overline{\mathit K}}}{{\mathit \pi}}{{\mathit p}}{{\mathit p}}$
$1425$ $\pm2$ 1520
ARMSTRONG
1984
OMEG 85 ${{\mathit \pi}^{+}}{{\mathit p}}$ , ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ( ${{\mathit \pi}^{+}}$ ,${{\mathit p}}$) ( ${{\mathit K}}{{\overline{\mathit K}}}{{\mathit \pi}}$) ${{\mathit p}}$
$\sim$$1420$
BITYUKOV
1984
SPEC 32 ${{\mathit K}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{0}}{{\mathit Y}}$
1  From a fit with a width fixed at 55 MeV.
2  This result supersedes ARMSTRONG 1984 , ARMSTRONG 1989 .
3  From fit to the ${{\mathit K}^{*}{(892)}}{{\mathit K}}$ ${}^{}1{}^{++}$ partial wave.
4  Mass error increased to account for ${{\mathit a}_{{0}}{(980)}}$ mass cut uncertainties.
5  No systematic error given.
References:
ACHARD 2007
JHEP 0703 018 Study of Resonance Formation in the Mass Region $1400 - 1500$ MeV through the Reaction ${{\mathit \gamma}}$ ${{\mathit \gamma}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}^{\pm}}{{\mathit \pi}^{\mp}}$
ABDALLAH 2003H
PL B569 129 Measurement of Inclusive ${{\mathit f}_{{1}}{(1285)}}$ and${{\mathit f}_{{1}}{(1420)}}$ Production in ${{\mathit Z}}$ Decays with the DELPHI Detector
NICHITIU 2002
PL B545 261 Study of the ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$ Final State in Antiproton Annihilation at Rest if Gaseous Hydrogen at NTP with the OBELIX Spectrometer
ADAMS 2001B
PL B516 264 Observation of Pseudoscalar and Axial Vector Resonances in ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{0}}{{\mathit n}}$ at 18 GeV
SOSA 1999
PRL 83 913 Spin Parity Analysis of the Centrally Produced ${{\mathit K}_S^0}$ ${{\mathit K}^{\pm}}{{\mathit \pi}^{\mp}}$ System at 800 ${\mathrm {GeV/}}\mathit c$
BARBERIS 1997C
PL B413 225 A Study of the ${{\mathit K}}{{\overline{\mathit K}}}{{\mathit \pi}}$ Channel Produced Centrally in ${{\mathit p}}{{\mathit p}}$ Interactions at 450 ${\mathrm {GeV/}}\mathit c$
BERTIN 1997
PL B400 226 A Search for Axial Vectors in ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}^{\pm}}{{\mathit K}^{0}}$ $_{miss}$ ${{\mathit \pi}^{\mp}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ Annihilations at Rest in Gaseous Hydrogen at NTP
PROKOSHKIN 1997B
PD 42 298 Investigation of the ${{\mathit \eta}}{{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$ System in the Mass Region of the $\mathit E/\iota $ Meson by Means of the GAMS-4000 Spectrometer
ARMSTRONG 1992E
ZPHY C56 29 Further Study of the ${{\mathit E}}/{{\mathit f}_{{1}}{(1420)}}$ Meson in Central Production
AUGUSTIN 1992
PR D46 1951 Partial Wave Analysis of DM2 Data in the ${{\mathit \eta}{(1430)}}$ Energy Range
BAI 1990C
PRL 65 2507 Partial Wave Analysis of ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit K}_S^0}$ ${{\mathit K}^{\pm}}{{\mathit \pi}^{\pm}}$
ARMSTRONG 1989
PL B221 216 A Spin-Parity Analysis of the ${{\mathit f}_{{1}}{(1285)}}$ and ${{\mathit f}_{{1}}{(1420)}}$ Mesons Centrally Produced in the Reaction ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}_{{f}}}$( ${{\mathit K}_S^0}$ ${{\mathit K}^{\pm}}{{\mathit \pi}^{\mp}}$) ${{\mathit p}_{{s}}}$ at 300 ${\mathrm {GeV/}}\mathit c$
BEHREND 1989
ZPHY C42 367 ${{\mathit K}_S^0}$ ${{\mathit K}}{{\mathit \pi}}$ Production in Tagged and Untagged ${{\mathit \gamma}}{{\mathit \gamma}}$ Interactions
BECKER 1987
PRL 59 186 Study of the ${{\mathit K}}{{\overline{\mathit K}}}{{\mathit \pi}}$ Final State in ${{\mathit J / \psi}}$ Hadronic Decays
GIDAL 1987B
PRL 59 2016 Evidence for a Spin 1 Resonance in the Reaction ${{\mathit \gamma}}$ ${{\mathit \gamma}^{*}}$ $\rightarrow$ ${{\mathit K}^{0}}{{\mathit K}^{\pm}}{{\mathit \pi}^{\pm}}$
AIHARA 1986C
PRL 57 2500 Evidence for Spin 1 Particle Produced by Two Photon
ARMSTRONG 1984
PL 146B 273 Spin Parity Analysis of the ${{\mathit E}}$ Meson Centrally Produced in the Reactions ${{\mathit \pi}^{+}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{+}}$( ${{\mathit K}^{0}}{{\mathit K}^{\pm}}{{\mathit K}^{\mp}}$) ${{\mathit p}}$ and ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}}$( ${{\mathit K}^{0}}{{\mathit K}^{\pm}}{{\mathit K}^{\mp}}{{\mathit \pi}^{\mp}}$) ${{\mathit p}}$ at 85 GeV
BITYUKOV 1984
SJNP 39 735 Investigation of ${{\mathit D}{(1285)}}$ and ${{\mathit E}{(1420)}}$ Mesons Production in Exclusive Interactions of ${{\mathit \pi}^{-}}$ and ${{\mathit K}^{-}}$ Mesons at 32.5 ${\mathrm {GeV/}}\mathit c$
CHAUVAT 1984
PL 148B 382 Unusual Production Features of Isoscalar Mesons in Proton Diffractive Dissociation at the CERN ISR
BROMBERG 1980
PR D22 1513 Observations of the ${{\mathit D}}$ and ${{\mathit E}}$ Mesons and Possible Three Kaon Enhancements in ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}^{0}}{{\mathit K}^{\pm}}{{\mathit \pi}^{\mp}}{{\mathit X}}$ , ${{\mathit K}^{0}}{{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit X}}$ at 50 and 100 ${\mathrm {GeV/}}\mathit c$
DIONISI 1980
NP B169 1 Observation and Quantum Numbers Determination of the ${{\mathit E}{(1420)}}$ Meson in ${{\mathit \pi}^{-}}{{\mathit p}}$ Interactions at 3.95 ${\mathrm {GeV/}}\mathit c$
DAHL 1967
PR 163 1377 Strange Particle Production in ${{\mathit \pi}^{-}}{{\mathit p}}$ Interactions from 1.5 to 4.2 ${\mathrm {GeV/}}\mathit c$. I. Three and More Body Final States. (p. 1377), II. Two-Body Final States (p. 1430)
Also
PRL 14 1074 ${{\mathit K}}{{\overline{\mathit K}}}{{\mathit \pi}}$ Resonance at 1280 MeV
Also
PRL 14 401 Further Evidence for a ${{\mathit K}}{{\mathit \pi}}$ Resonance near 1400 MeV