Near threshold angular distributions for the H-2(gamma,I >)X reaction

0463258 - ÚJF 2017 RIV US eng J - Journal Article
Beckford, B. - Bydžovský, Petr - 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. - Kiyokawa, S. - Koike, T. - Maeda, K. - Makabe, K. - Matsubara, M. - Miwa, K. - Nagao, S. - Nakamura, S. N. - Okuyama, A. - Shirotori, K. - Sugihara, K. - Suzuki, K. - Tamae, T. - Tamura, H. - Tsukada, K. - Yamamoto, F. - Yamamoto, T. - Yonemoto, F. - Yamazaki, H.
Near threshold angular distributions for the H-2(gamma,I >)X reaction.
Progress of Theoretical and Experimental Physics. Roč. 2016, č. 6 (2016), 063D01. ISSN 2050-3911
Institutional support: RVO:61389005
Keywords : neutral Kaon photoproduction * electromagnetic production * gamma
Subject RIV: BE - Theoretical Physics
Impact factor: 2.039, year: 2016

A study of the H-2(gamma, Lambda) X reaction was performed using a tagged photon beam at the Research Center for Electron Photon Science ( ELPH), Tohoku University. The photoproduced Lambda was measured in the p pi(-) 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 Lambda in the laboratory frame for five energy bins. Our results indicated a peak in the cross section at angles smaller than cos(Lambda)(LAB) = 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( rK1K. =- 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 Lambda integrated and momentum dependent differential cross sections of H-2(gamma, Lambda) X [ M. Kaneta et al., Nucl. Phys. A 914, 69 ( 2013)], we present our findings on the angular distributions.
Permanent Link: http://hdl.handle.net/11104/0262506