Measurement of the reaction γp → K0Σat photon energies up to 2.6 GeV⋆

2005/03/23 by R. Lawall, J. Barth, C. Bennhold +17 · 2 citations
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #hep-ph #nucl-ex #nucl-th

paper · pdf · doi:10.1140/epja/i2005-10002-x

published as Eur.Phys.J. A24 (2005) 275-286 · 15 pages, 18 figures, to appear in Eur. Phys. J. A

openalex publication_date 2005/03/23 · arxiv created 2005/04/18 · arxiv updated 2009/12/01 · openalex created_date 2016/07/22 · openalex updated_date 2026/07/28

Abstract

The reaction gamma p --> K0 Sigma+ was measured in the photon energy range from threshold up to 2.6 GeV with the SAPHIR detector at the electron stretcher facility, ELSA, in Bonn. Results are presented on the reaction cross section and the polarization of the Sigma+ as a function of the kaon production angle in the centre-of-mass system, cos(Theta_K^c.m.), and the photon energy. The cross section is lower and varies less with photon energy and kaon production angle than that of gamma p --> K+ Sigma0. The Sigma+ is polarized predominantly at cos(Theta_K^c.m.) ≈ 0. The data presented here are more precise than previous ones obtained with SAPHIR and extend the photon energy range to higher values. They are compared to isobar model calculations.

Cited by

• New Elementary Operator for Kaon Photoproduction on the Nucleon and Nuclei
• Partial decay widths of baryons in the spin-momentum operator expansion method

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