Photo-production of neutral kaons on C-12 in the threshold region
Result description
The kaon photo-production process on C-12 has been studied by measuring neutral kaons in the photon energy range of 0.8-1.1 GeV. Neutral kaons were identified by the invariant mass constructed from two charged pions emitted in the K-S(0) -> pi(+) pi(-) decay channel. The differential and integrated cross sections in the threshold photon energy region were obtained. The obtained momentum spectra were compared with a Spectator model calculation using elementary amplitudes of kaon photo-production given byrecent isobar models. The present results provide the first information on the n(gamma, K-0)Lambda reaction, which is expected to play an important role in constructing models of strangeness production by electromagnetic interactions. The experimental results show that the cross section of C-12(gamma, K-0) is of the same order as that of C-12(gamma, K+) and suggest that a slightly backward K-0 angular distribution is favored in the gamma n -> K-0 Lambda process.
Keywords
The result's identifiers
Result code in IS VaVaI
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Photo-production of neutral kaons on C-12 in the threshold region
Original language description
The kaon photo-production process on C-12 has been studied by measuring neutral kaons in the photon energy range of 0.8-1.1 GeV. Neutral kaons were identified by the invariant mass constructed from two charged pions emitted in the K-S(0) -> pi(+) pi(-) decay channel. The differential and integrated cross sections in the threshold photon energy region were obtained. The obtained momentum spectra were compared with a Spectator model calculation using elementary amplitudes of kaon photo-production given byrecent isobar models. The present results provide the first information on the n(gamma, K-0)Lambda reaction, which is expected to play an important role in constructing models of strangeness production by electromagnetic interactions. The experimental results show that the cross section of C-12(gamma, K-0) is of the same order as that of C-12(gamma, K+) and suggest that a slightly backward K-0 angular distribution is favored in the gamma n -> K-0 Lambda process.
Czech name
Fotoprodukce neutrálních kaonů na C-12 v prahové oblasti
Czech description
Byl studován proces fotoprodukce neutrálních kaonů na C-12 v oblasti energií fotonu 0,8-1,1 GeV.Neutrální kaony byly identifikovány pomocí hmotnosti konstruované dvoun nabitých vyzářených v K-S(0)-pi(+)pi(-)rozpadovém kanálu.Byly získán diferenciální a integrální průřez v prahové oblasti energií.
Classification
Type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BE - Theoretical physics
OECD FORD branch
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Result continuities
Project
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2007
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physics Letters. B
ISSN
0370-2693
e-ISSN
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Volume of the periodical
651
Issue of the periodical within the volume
4
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
6
Pages from-to
269-274
UT code for WoS article
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EID of the result in the Scopus database
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Basic information
Result type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP
BE - Theoretical physics
Year of implementation
2007