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K+Λ and K+Σ0K+Σ0 photoproduction with fine center-of-mass energy resolution

(A2 Collaboration at MAMI) Jude, T. C.; Korolija, Milorad; Supek, Ivan (2014) K+Λ and K+Σ0K+Σ0 photoproduction with fine center-of-mass energy resolution. Physics Letters B, 735 . pp. 112-118. ISSN 0370-2693

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Measurements of γp→K+Λγp→K+Λ and γp→K+Σ0γp→K+Σ0 cross-sections have been obtained with the photon tagging facility and the Crystal Ball calorimeter at MAMI-C. The measurement uses a novel K+K+ meson identification technique in which the weak decay products are characterized using the energy and timing characteristics of the energy deposit in the calorimeter, a method that has the potential to be applied at many other facilities. The fine center-of-mass energy (W) resolution and statistical accuracy of the new data results in a significant impact on partial wave analyses aiming to better establish the excitation spectrum of the nucleon. The new analyses disfavor a strong role for quark–diquark dynamics in the nucleon.

Item Type: Article
Uncontrolled Keywords: photoproduction; strangeness; baryon spectroscopy
Subjects: NATURAL SCIENCES > Physics
Divisions: Division of Experimental Physics
Depositing User: Milorad Korolija
Date Deposited: 06 Dec 2016 12:50
DOI: 10.1016/j.physletb.2014.06.015

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