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${{\mathit \Sigma}{(1580)}}$ MASS

INSPIRE   PDGID:

B000M

VALUE (MeV) DOCUMENT ID TECN  COMMENT $\bf{ \approx1580}$ OUR ESTIMATE $1583$ $\pm4$ 1 CARROLL 1976 DPWA Isospin-1 total $\sigma{}$ $1582$ $\pm4$ 2 LITCHFIELD 1974 DPWA ${{\mathit K}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit \pi}^{0}}$ 1  CARROLL 1976 sees a total-cross-section bump with ($\mathit J$+1/2) $\Gamma _{{\mathrm {el}}}$ $/$ $\Gamma _{{\mathrm {total}}}$ = 0.06. 2  The main effect observed by LITCHFIELD 1974 is in the ${{\mathit \Lambda}}{{\mathit \pi}}$ final state; the ${{\overline{\mathit K}}}{{\mathit N}}$ and ${{\mathit \Sigma}}{{\mathit \pi}}$ couplings are estimated from a multichannel fit including total-cross-section data of LI 1973 .

References:

CARROLL 1976 PRL 37 806 Structures in ${{\mathit K}^{-}}$ Nucleon Total Cross Sections below 1.1 ${\mathrm {GeV/}}\mathit c$ LITCHFIELD 1974 PL 51B 509 Spin-Parity of the ${{\mathit \Sigma}{(1580)}}$