Publications [#246074] of Haiyan Gao

Papers Published

1. Gao, H, New results from the bates large acceptance spectrometer toroid (blast), International Journal of Modern Physics E, vol. 18 no. 2 (February, 2009), pp. 209-219, WORLD SCIENTIFIC PUBL CO PTE LTD, ISSN 0218-3013 [doi]
   (last updated on 2026/01/14)

   Abstract:
   An experiment using the novel technique of scattering a longitudinally polarized electron beam from polarized internal hydrogen/deuterium gas targets was carried out in the South Hall Ring at the MIT-Bates Accelerator Center. The scattered particles were detected by the Bates Large Acceptance Spectrometer Toroid (BLAST) detector. The proton electric to magnetic form factor ratio, $\frac{G-E^p}{G-M^p}$ at Q² = 0.1 - 0.65 (GeV/c) ² has been determined from the experiment by measuring the spin-dependent ep elastic scattering asymmetry in the two symmetric sectors of the BLAST simultaneously for the first time. The neutron electric form factor $G-E^n$ in the same Q² range has been extracted by measuring the spin-dependent asymmetry from the $\vec d(\vec e,e'n)$ process with a vector polarized deuterium target. These results on the nucleon form factors from the BLAST experiment are presented. © 2009 World Scientific Publishing Company.