Ratio of $Λ$ and $Σ^{0}$ Photoproduction Cross Sections; High-Mass Hyperon Resonances

29 January 1968

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 20 (5) , 221-223
https://doi.org/10.1103/physrevlett.20.221

Abstract

The ratio of

Λ

Σ^{0}

photoproduction cross sections has been measured to be 1.25±0.15. The measurement was carried out at center-of-mass angles of about 30°; the observed ratio disagrees with predictions of a quark model. In the study of

K^{+}

photoproduction for photon energies from 4.0 to 6.1 BeV, we obtained evidence for

Y^{*}

states at 2360 and 2530 MeV.

Keywords

This publication has 13 references indexed in Scilit:

Search for $S = + 1$ Baryon States in Photoproduction
Physical Review Letters, 1967
$K^{0}$ Photoproduction Cross Sections Compared to Quark-Model Predictions
Physical Review Letters, 1967
Photoproduction of Y∗0 resonant states
Physics Letters B, 1967
Photoproduction of Strange Particles
Physical Review B, 1967
Photoproduction Cross Sections for $π^{+}$ and $K^{+}$ Mesons at 3.4 to 4.0 GeV and Their Comparison with $SU (3)$
Physical Review B, 1967
$Λ$ AND $Σ^{0}$ Production in Peripheral Reactions
Physical Review Letters, 1967
Electromagnetic Properties of Hadrons in the Quark Model
Physical Review B, 1967
Meson-Baryon and Baryon-Baryon Reactions in a Quark Model
Physical Review B, 1966
Photoproduction processes in the quark model
Physics Letters, 1966
Evidence for the Photoproduction of $Y = 0$ States with Masses Greater than 1900 MeV
Physical Review Letters, 1965

Ratio ofΛandΣ0Photoproduction Cross Sections; High-Mass Hyperon Resonances

Abstract

Keywords

Ratio of $Λ$ and $Σ^{0}$ Photoproduction Cross Sections; High-Mass Hyperon Resonances