Abstract

Missing-mass spectroscopy with the 3H(e, e′K+) reaction was carried out at Jefferson Lab’s (JLab) Hall A in Oct–Nov, 2018. The differential cross section for the 3H(γ∗, K+)Λnn was deduced at ω = Ee − Ee′ = 2.102 GeV and at the forward K+-scattering angle (0° ≤ θγ∗K ≤ 5°) in the laboratory frame. Given typical predicted energies and decay widths, which are (BΛ, Γ) = (−0.25, 0.8) and (−0.55, 4.7) MeV, the cross sections were found to be 11.2 ± 4.8(stat.)+4.1−2.1(sys.) and 18.1 ± 6.8(stat.)+4.2−2.9(sys.) nb/sr, respectively. The obtained result would impose a constraint for interaction models particularly between Λ and neutron by comparing to theoretical calculations.

Details

Title
Cross-section measurement of virtual photoproduction of iso-triplet three-body hypernucleus, Λnn
Author
Gogami, T; Suzuki, K N; Pandey, B; Itabashi, K; Nagao, S; Okuyama, K; Nakamura, S N; Tang, L; Abrams, D; Akiyama, T; Androic, D; Aniol, K; C. Ayerbe Gayoso; Bane, J; Barcus, S; Barrow, J; Bellini, V; Bhatt, H; Bhetuwal, D; Biswas, D; Camsonne, A; Castellanos, J; J-P. Chen; Chen, J; Covrig, S; Chrisman, D; Cruz-Torres, R; Das, R; Fuchey, E; Gnanvo, K; Garibaldi, F; Gautam, T; Gomez, J; Gueye, P; Hague, T J; Hansen, O; Henry, W; Hauenstein, F; Higinbotham, D W; Hyde, C E; Kaneta, M; Keppel, C; Kutz, T; Lashley-Colthirst, N; S. Li; Liu, H; Mammei, J; Markowitz, P; McClellan, R E; Meddi, F; Meekins, D; Michaels, R; Mihovilovic, M; Moyer, A; Nguyen, D; Nycz, M; Owen, V; Palatchi, C; Park, S; Petkovic, T; Premathilake, S; Reimer, P E; Reinhold, J; Riordan, S; Rodriguez, V; Samanta, C; Santiesteban, S N; Sawatzky, B; Širca, S; Slifer, K; T. Su; Tian, Y; Toyama, Y; Uehara, K; Urciuoli, G M; Votaw, D; Williamson, J; Wojtsekhowski, B; Wood, S A; Yale, B; Z. Ye; Zhang, J; Zheng, X
Section
Production of Strangeness
Publication year
2022
Publication date
2022
Publisher
EDP Sciences
ISSN
21016275
e-ISSN
2100014X
Source type
Conference Paper
Language of publication
English
DOI
https://doi.org/10.1051/epjconf/202227102002
ProQuest document ID
3192939450
Copyright
© 2022. This work is licensed under https://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and conditions, you may use this content in accordance with the terms of the License.