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

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Tytuł:: Observation of a cusp-like structure in the γp → K+Σ0 cross section at forward angles and low momentum transfer
Autorzy:: T.C. Jude
S. Alef
P. Bauer
D. Bayadilov
R. Beck
A. Bella
J. Bieling
A. Braghieri
P.L. Cole
D. Elsner
R. Di Salvo
A. Fantini
O. Freyermuth
F. Frommberger
F. Ghio
S. Goertz
A. Gridnev
D. Hammann
J. Hannappel
K. Kohl
N. Kozlenko
A. Lapik
P. Levi Sandri
V. Lisin
G. Mandaglio
F. Messi
R. Messi
D. Moricciani
V. Nedorezov
V.A. Nikonov
D. Novinskiy
P. Pedroni
A. Polonskiy
B.-E. Reitz
M. Romaniuk
A.V. Sarantsev
G. Scheluchin
H. Schmieden
A. Stuglev
V. Sumachev
V. Vegna
V. Tarakanov
T. Zimmermann
Temat:: Strangeness photoproduction
BGOOD
Physics
QC1-999
Źródło:: Physics Letters B, Vol 820, Iss , Pp 136559- (2021)
Wydawca:: Elsevier, 2021.
Rok publikacji:: 2021
Kolekcja:: LCC:Physics
Typ dokumentu:: article
Opis pliku:: electronic resource
Język:: English
ISSN:: 0370-2693
Relacje:: http://www.sciencedirect.com/science/article/pii/S0370269321004998; https://doaj.org/toc/0370-2693
DOI:: 10.1016/j.physletb.2021.136559
Dostęp URL:: https://doaj.org/article/0eaa8178a312452da42ddfcfb3cf120f Link otwiera się w nowym oknie
Numer akcesji:: edsdoj.0eaa8178a312452da42ddfcfb3cf120f
: Czasopismo naukowe

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The γp→K+Σ0 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 K+ 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.

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