The gamma+p->K+ + Sigma0 differential cross section at extremely forward angles was measured at the BGOOD experiment. A three-quarter drop in strength over a narrow range in energy and a strong dependence on the polar angle of the in the centre-of-mass of the reaction is observed at a centre-of-mass energy of 1900 MeV. Residing close to multiple open and hidden strangeness thresholds, the structure appears consistent with meson-baryon threshold effects which may contribute to the reaction mechanism.

Jude, T.c., Alef, S., Bauer, P., Bayadilov, D., Beck, R., Bella, A., et al. (2021). Observation of a cusp-like structure in the γp → K+Σ0 cross section at forward angles and low momentum transfer. PHYSICS LETTERS. SECTION B, 820 [https://doi.org/10.1016/j.physletb.2021.136559].

Observation of a cusp-like structure in the γp → K+Σ0 cross section at forward angles and low momentum transfer

Fantini, A.;Lapik, A.;Messi, F.;Messi, R.;Vegna, V.;
2021-09-10

Abstract

The gamma+p->K+ + Sigma0 differential cross section at extremely forward angles was measured at the BGOOD experiment. A three-quarter drop in strength over a narrow range in energy and a strong dependence on the polar angle of the in the centre-of-mass of the reaction is observed at a centre-of-mass energy of 1900 MeV. Residing close to multiple open and hidden strangeness thresholds, the structure appears consistent with meson-baryon threshold effects which may contribute to the reaction mechanism.
10-set-2021
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/04 - FISICA NUCLEARE E SUBNUCLEARE
English
Strangeness photoproduction; BGOOD
Jude, T.c., Alef, S., Bauer, P., Bayadilov, D., Beck, R., Bella, A., et al. (2021). Observation of a cusp-like structure in the γp → K+Σ0 cross section at forward angles and low momentum transfer. PHYSICS LETTERS. SECTION B, 820 [https://doi.org/10.1016/j.physletb.2021.136559].
Jude, Tc; Alef, S; Bauer, P; Bayadilov, D; Beck, R; Bella, A; Bieling, J; Braghieri, A; Cole, Pl; Elsner, D; Di Salvo, R; Fantini, A; Freyermuth, O; Frommberger, F; Ghio, F; Goertz, S; Gridnev, A; Hammann, D; Hannappel, J; Kohl, K; Kozlenko, N; Lapik, A; Levi Sandri, P; Lisin, V; Mandaglio, G; Messi, F; Messi, R; Moricciani, D; Nedorezov, V; Nikonov, Va; Novinskiy, D; Pedroni, P; Polonskiy, A; Reitz, B-; Romaniuk, M; Sarantsev, Av; Scheluchin, G; Schmieden, H; Stuglev, A; Sumachev, V; Vegna, V; Tarakanov, V; Zimmermann, T
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/278204
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