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${{\mathit \Sigma}{(1690)}}$ WIDTH (PRODUCTION EXPERIMENTS)

INSPIRE   PDGID:

B058W

VALUE (MeV) EVTS DOCUMENT ID TECN CHG  COMMENT $240$ $\pm60$ 70 1 GODDARD 1979 HBC + ${{\mathit \pi}^{+}}{{\mathit p}}$ 10.3 ${\mathrm {GeV/}}\mathit c$ $130$ ${}^{+100}_{-60}$ 40 2 GODDARD 1979 HBC + ${{\mathit \pi}^{+}}{{\mathit p}}$ 10.3 ${\mathrm {GeV/}}\mathit c$ $142$ $\pm40$ 15 ADERHOLZ 1969 HBC + ${{\mathit \pi}^{+}}{{\mathit p}}$ 8 ${\mathrm {GeV/}}\mathit c$ $25$ $\pm10$ 46 BLUMENFELD 1969 HBC + ${{\mathit K}_L^0}$ ${{\mathit p}}$ $130$ $\pm25$ MOTT 1969 HBC + ${{\mathit K}^{-}}{{\mathit p}}$ 5.5 ${\mathrm {GeV/}}\mathit c$ $105$ $\pm35$ 60 3 PRIMER 1968 HBC + ${{\mathit K}^{-}}{{\mathit p}}$ 4.6$-$5 ${\mathrm {GeV/}}\mathit c$ $62$ $\pm14$ 4 SIMS 1968 HBC - ${{\mathit K}^{-}}$ ${{\mathit N}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit \pi}}{{\mathit \pi}}$ $100$ $\pm35$ 30 COLLEY 1967 HBC + ${{\mathit K}^{-}}{{\mathit p}}$ 6 ${\mathrm {GeV/}}\mathit c$ 1  From ${{\mathit \pi}^{+}}$ ${{\mathit p}}$ $\rightarrow$ ( ${{\mathit \Lambda}}{{\mathit \pi}^{+}}$) ${{\mathit K}^{+}}$ . $\mathit J$ $>{}^{}1/2{}^{}$ is not required by the data. 2  From ${{\mathit \pi}^{+}}$ ${{\mathit p}}$ $\rightarrow$ ( ${{\mathit \Lambda}}{{\mathit \pi}^{+}}$) ( ${{\mathit K}}{{\mathit \pi}}$) ${}^{+}$. $\mathit J$ $>{}^{}1/2{}^{}$ is indicated, but large background precludes a definite conclusion. 3  See the ${{\mathit \Sigma}{(1670)}}$ Listings. AGUILAR-BENITEZ 1970B with three times the data of PRIMER 1968 find no evidence for the ${{\mathit \Sigma}{(1690)}}$. 4  This analysis, which is difficult and requires several assumptions and shows no unambiguous ${{\mathit \Sigma}{(1690)}}$ signal, suggests $\mathit J{}^{P} = 5/2{}^{+}$. Such a state would lead all previously known ${{\mathit Y}^{*}}$ trajectories.

References:

GODDARD 1979 PR D19 1350 ${{\mathit Y}^{*}}{{\mathit K}}$ and ${{\mathit Y}^{*}}{{\mathit K}^{*}}$ Production in ${{\mathit \pi}^{+}}{{\mathit p}}$ Interactions at 10.3 ${\mathrm {GeV/}}\mathit c$ ADERHOLZ 1969 NP B11 259 Strange Particle Production in 8 ${\mathrm {GeV/}}\mathit c$ Positive Pion Interactions in Hydrogen BLUMENFELD 1969 PL 29B 58 Formation of the ${{\mathit Y}_{{1}}^{*}{(1616)}}$ and ${{\mathit Y}_{{1}}^{*}{(1700)}}$ in ${{\mathit K}_L^0}$ ${{\mathit p}}$ Interactions MOTT 1969 PR 177 1966 Study of ${{\mathit K}^{-}}{{\mathit p}}$ Interactions at 4.1 and 5.5 ${\mathrm {GeV/}}\mathit c$: Final States with Two Charged Particles and a Visible ${{\mathit \Lambda}}$ Also PRL 18 266 Excited Hyperon of Mass 1680 MeV PRIMER 1968 PRL 20 610 Study of ${{\mathit Y}_{{1}}^{*}{(1660)}}$ and ${{\mathit Y}_{{1}}^{*}{(1690)}}$ Production in ${{\mathit K}^{-}}{{\mathit p}}$ Interactions SIMS 1968 PRL 21 1413 Partial Wave Analysis of the Sequential Reaction ${{\mathit K}^{-}}$ ${{\mathit n}}$ $\rightarrow$ ${{\mathit Y}_{{1}}^{*}{(1385)}}{{\mathit \pi}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit \pi}}{{\mathit \pi}}$ in the Center-of-Mass Energy Range 1600-1740 MeV COLLEY 1967 PL 24B 489 Production of a ${{\mathit Y}_{{1}}^{*}{(1700)}}$ in ${{\mathit K}^{-}}{{\mathit p}}$ Collisions at 6 ${\mathrm {GeV/}}\mathit c$