Study of the reactions γp → K+ Σ± π∓ at photon energies up to 2.6 GeV
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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 +, pπ 0 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 monotonically with increasing photon energy. The two-particle mass distributions of Σ ± π ∓ and K + π − show substantial production of resonant states.
KeywordsBackground Subtraction Excitation Function Primary Vertex Photon Energy Range Decay Vertex
- 13.S. Goers, Doctoral Thesis, Bonn University (1999) BONN-IR-1999-09Google Scholar