Cross-section measurement of virtual photoproduction of iso-triplet three-body hypernucleus, Λnn

Academic Article

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+nn was deduced at ω = EeEe′ = 2.102 GeV and at the forward K+-scattering angle (0° ≤ θγK ≤ 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.
  • Authors

  • Gogami, T
  • Suzuki, KN
  • Pandey, B
  • Itabashi, K
  • Nagao, S
  • Okuyama, K
  • Nakamura, SN
  • Tang, L
  • Abrams, D
  • Akiyama, T
  • Androic, D
  • Aniol, K
  • Ayerbe Gayoso, C
  • Bane, J
  • Barcus, S
  • Barrow, J
  • Bellini, V
  • Bhatt, H
  • Bhetuwal, D
  • Biswas, D
  • Camsonne, A
  • Castellanos, J
  • Chen, J-P
  • Chen, J
  • Covrig, S
  • Chrisman, D
  • Cruz-Torres, R
  • Das, R
  • Fuchey, E
  • Gnanvo, K
  • Garibaldi, F
  • Gautam, T
  • Gomez, J
  • Gueye, P
  • Hague, TJ
  • Hansen, O
  • Henry, W
  • Hauenstein, F
  • Higinbotham, DW
  • Hyde, CE
  • Kaneta, M
  • Keppel, C
  • Kutz, T
  • Lashley-Colthirst, N
  • Li, S
  • Liu, H
  • Mammei, J
  • Markowitz, P
  • McClellan, RE
  • 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, PE
  • Reinhold, J
  • Riordan, S
  • Rodriguez, V
  • Samanta, C
  • Santiesteban, SN
  • Sawatzky, B
  • Širca, S
  • Slifer, Karl
  • Su, T
  • Tian, Y
  • Toyama, Y
  • Uehara, K
  • Urciuoli, GM
  • Votaw, D
  • Williamson, J
  • Wojtsekhowski, B
  • Wood, SA
  • Yale, B
  • Ye, Z
  • Zhang, J
  • Zheng, X
  • Status

    Publication Date

  • 2022
  • Published In

    Digital Object Identifier (doi)

    Start Page

  • 02002
  • End Page

  • 02002
  • Volume

  • 271