First measurement of the asymmetry and the Gerasimov-Drell-Hearn integrand from the He 3- (γ-,p) H 2 reaction at an incident photon energy of 29 MeV

Journal Article (Journal Article)

The first measurement of the He3 - (γ - ,p)H2 process was performed at the High Intensity γ-ray Source (HIγS) facility at Triangle Universities Nuclear Laboratory using a circularly polarized, monoenergetic γ-ray beam and a longitudinally polarized He3 target. The spin-dependent asymmetry and the contribution from the two-body photodisintegration to the He3 Gerasimov-Drell-Hearn integrand are extracted and compared with state-of-the-art three-nucleon system calculations at the incident photon energy of 29 MeV. The data are in general agreement with the various theoretical predictions based on the Siegert theorem or on explicit inclusion of meson-exchange currents.

Full Text

Duke Authors

Cited Authors

  • Laskaris, G; Ji, W; Yan, X; Zhou, J; Zimmerman, WR; Ahmed, MW; Averett, T; Deltuva, A; Fonseca, AC; Gao, H; Golak, J; Kafkarkou, A; Karwowski, HJ; Lalremruata, B; Manfredi, J; Mueller, JM; Sauer, PU; Skibiński, R; Smith, AP; Tsang, MB; Weller, HR; Witała, H; Wu, YK; Zhao, ZW

Published Date

  • March 1, 2021

Published In

Volume / Issue

  • 103 / 3

Electronic International Standard Serial Number (EISSN)

  • 2469-9993

International Standard Serial Number (ISSN)

  • 2469-9985

Digital Object Identifier (DOI)

  • 10.1103/PhysRevC.103.034311

Citation Source

  • Scopus