Measurement of the reaction γp → K^ + Σ^±π^∓ at photon energies up to 2.6 GeV

2010/11/03 by I. Schulday, R. Lawall, Schulday, I. +25
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #nucl-ex

paper · pdf · doi:10.48550/arxiv.1011.0823

6 pages, 12 figures, 4 tables

arxiv created 2010/11/03 · arxiv updated 2010/11/04

Abstract

The reactions γp → K⁺Σ^±π^∓ were studied with the SAPHIR detector using a tagged photon beam at the electron stretcher facility ELSA in Bonn. The decays Σ^- → nπ^- and Σ⁺ → nπ⁺, pπ⁰ were fully reconstructed. Reaction cross sections were measured as a function of the photon energy from threshold up to 2.6 GeV with considerably improved statistics compared to a previous bubble chamber measurement. The cross sections rise monotonously with increasing photon energy. The two-particle mass distributions of Σ^±π^∓ and K⁺π^- show substantial production of resonant states.

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