${{\mathit \Lambda}{(1405)}}$ WIDTH

PRODUCTION EXPERIMENTS

INSPIRE search
VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT
$\bf{ 50.5 \pm2.0}$ OUR AVERAGE
$62$ $\pm10$
HASSANVAND
2013
SPEC ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}}{{\mathit \Lambda}{(1405)}}{{\mathit K}^{+}}$
$50$ $\pm2$ 1
DALITZ
1991
M-matrix fit
• • We do not use the following data for averages, fits, limits, etc. • •
$24$ ${}^{+4}_{-3}$
ESMAILI
2010
RVUE ${}^{4}\mathrm {He}$ ${{\mathit K}^{-}}$ $\rightarrow$ ${{\mathit \Sigma}^{\pm}}{{\mathit \pi}^{\mp}}{{\mathit X}}$ at rest
$32$ $\pm1$ 700 1
HEMINGWAY
1985
HBC ${{\mathit K}^{-}}{{\mathit p}}$ 4.2 ${\mathrm {GeV/}}\mathit c$
$45\text{ to }55 $ 400 2
THOMAS
1973
HBC ${{\mathit \pi}^{-}}{{\mathit p}}$ 1.69 ${\mathrm {GeV/}}\mathit c$
$35$ 120
BARBARO-GALTI..
1968B
DBC ${{\mathit K}^{-}}{{\mathit d}}$ 2.1$-$2.7 ${\mathrm {GeV/}}\mathit c$
$50$ $\pm10$ 67
BIRMINGHAM
1966
HBC ${{\mathit K}^{-}}{{\mathit p}}$ 3.5 ${\mathrm {GeV/}}\mathit c$
$89$ $\pm20$
ENGLER
1965
HDBC
$60$ $\pm20$
MUSGRAVE
1965
HBC
$35$ $\pm5$
ALEXANDER
1962
HBC
$50$
ALSTON
1962
HBC
$20$
ALSTON
1961B
HBC
1  DALITZ 1991 fits the HEMINGWAY 1985 data.
2  THOMAS 1973 data is fit by CHAO 1973 (see next section).
References:
HASSANVAND 2013
PR C87 055202 Theoretical Analysis of ${{\mathit \Lambda}{(1405)}}$ $\rightarrow$ (${{\mathit \Sigma}}{{\mathit \pi}}$ )${}^{0}$ Mass Spectra Produced in ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}}{{\mathit \Lambda}{(1405)}}{{\mathit K}^{+}}$ Reactions
Also
PR C88 019905 (errat.) Addendum to HASSANVAND 2013 : Theoretical Analysis of ${{\mathit \Lambda}{(1405)}}$ $\rightarrow$ ( ${{\mathit \Sigma}}{{\mathit \pi}}$ ) ${}^{0}$ Mass Spectra Produced in ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}}$ ${{\mathit \Lambda}{(1405)}}$ ${{\mathit K}^{+}}$ Reactions
ESMAILI 2010
PL B686 23 Experimental Confirmation of the ${{\mathit \Lambda}{(1405)}}$ Ansatz from Resonant Formation of a ${{\mathit K}^{-}}{{\mathit p}}$ Quasi-Bound State in ${{\mathit K}^{-}}$ Absorption by ${}^{3}\mathrm {He}$ and ${}^{4}\mathrm {He}$
DALITZ 1991
JP G17 289 The Shape and Parameters of the ${{\mathit \Lambda}{(1405)}}$ Resonance
HEMINGWAY 1985
NP B253 742 Production of ${{\mathit \Lambda}{(1405)}}$ in ${{\mathit K}^{-}}$ ${{\mathit p}}$ Reactions at 4.2 ${\mathrm {GeV/}}\mathit c$
THOMAS 1973
NP B56 15 Strange Particle Production from ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ Interactions at 1.69 ${\mathrm {GeV/}}\mathit c$
BARBARO-GALTIERI 1968B
PRL 21 573 Search for $\mathit I = 2$ Hyperons and Study of Resonances in ${{\mathit K}^{-}}{{\mathit d}}$ Interactions
BIRMINGHAM 1966
PR 152 1148 Reactions ${{\mathit K}^{-}}$ ${{\mathit p}}$ $\rightarrow$ Hyperon Meson at 3.5 ${\mathrm {GeV/}}\mathit c$
ENGLER 1965
PRL 15 224 Spin of the ${{\mathit Y}_{{0}}^{*}{(1405)}}$
MUSGRAVE 1965
NC 35 735 Study of ${{\mathit Y}}$ ${{\overline{\mathit Y}}}$ Production in Two, Three, and Four Body Final States by 3.0, 3.6 and 4.0 ${\mathrm {GeV/}}\mathit c$ Antiprotons in Hydrogen
ALEXANDER 1962
PRL 8 447 Production of Strange Particle Resonant States by 2.1 ${\mathrm {GeV/}}\mathit c$ ${{\mathit \pi}^{-}}$ Mesons
ALSTON 1962
CERN Conf. 311 Study of Resonances in the ${{\mathit \Sigma}}$ ${{\mathit \pi}}$ System
ALSTON 1961B
PRL 6 698 Study of Resonances in the ${{\mathit \Sigma}}$ ${{\mathit \pi}}$ System