Measurement of polarisation observables in K-s(0)Sigma(+) photoproduction off the proton

作者：Ewald R; Anisovich A V; Bantes B; Bartholomy O; Bayadilov D; Beck R; Beloglazov Y A; Brinkmann K T; Crede V; Dutz H; Elsner D; Fornet Ponse K; Frommberger F; Funke Ch; Gridnev A B; Gutz E; Hannappel J; Hillert W; Hoffmeister P; Jaegle I; Jahn O; Jude T C^*; Junkersfeld J; Kalinowsky H; Kammer S; Kleber V; Klein Frank; Klein Friedrich; Klempt E; Krusche B; Lang M; Lohner H; Lopatin I V; Menze D; Mertens T

来源：Physics Letters B, 2014, 738: 268-273.

DOI：10.1016/j.physletb.2014.09.039

• Meson production
• Other strange mesons
• Baryon resonances (S=C=B=0)
• Decays of baryons
• Polarisation in interactions and scattering

The reaction gamma p -%26gt; K-S(0)Sigma(+) is studied in the photon energy range from threshold. Linearly polarised photon beams from coherent bremsstrahlung enabled the first measurement of photon beam asymmetries in this reaction up to E-gamma = 1650 MeV. In addition, the recoil hyperon polarisation was determined through the asymmetry in the weak decay Sigma(+) -%26gt; p pi(0) up to E-gamma = 2250 MeV. The data are compared to partial wave analyses, and the possible impact on the interpretation of a recently observed prominent structure in the cross section near the K* thresholds is discussed.

• 出版日期2014-11-10