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- Title
Near threshold angular distributions for the ²H(γ,Λ)X reaction.
- Authors
Beckford, B.; Bydžovský, P.; Chiba, A.; Doi, D.; Fujii, T.; Fujii, Y.; Futatsukawa, K.; Gogami, T.; Hashimoto, O.; Han, Y. C.; Hirose, K.; Honda, R.; Hosomi, K.; Ishikawa, T.; Kanda, H.; Kaneta, M.; Kaneko, Y.; Kato, S.; Kawama, D.; Kimura, C.
- Abstract
A study of the ²H(γ, Λ)X reaction was performed using a tagged photon beam at the Research Center for Electron Photon Science (ELPH), Tohoku University. The photoproduced Λ was measured in the pπ- decay channel by the upgraded Neutral Kaon Spectrometer (NKS2+). The momentum integrated differential cross section was determined as a function of the scattering angle of Λ in the laboratory frame for five energy bins. Our results indicated a peak in the cross section at angles smaller than cos θLABΛ = 0.96. The experimentally obtained angular distributions were compared to isobar models, Kaon-Maid (KM) and Saclay-Lyon A (SLA), in addition to the composite Regge-plus-resonance (RPR) model. Both SLA(rK1Kγ =-1.4) and RPR describe the data quite well in contrast to the KM model, which substantially under-predicted the cross section at the most forward angles. With the anticipated finalized data on Λ integrated and momentum dependent differential cross sections of ²H(γ, Λ)X [M. Kaneta et al., Nucl. Phys. A 914, 69 (2013)], we present our findings on the angular distributions.
- Publication
Progress of Theoretical & Experimental Physics: PTEP, 2016, Vol 2016, Issue 6, p1
- ISSN
2050-3911
- Publication type
Article
- DOI
10.1093/ptep/ptw071