Publications [#246072] of Haiyan Gao

Papers Published
  1. Chen, W; Gao, H, Charged pion photoproduction, AIP Conference Proceedings, vol. 1182 (2009), pp. 851-854 [doi] .

    We extracted the differential cross section for the γn → π- p process from a deuterium target using the CLAS detector at Jefferson Lab in Hall B for photon energies between 1.0 and 3.5 GeV and pion center-of-mass (c.m.) angles (θc.m.) between 50° and 115°. We confirm a previous indication of a broad enhancement around a cm. energy (√s) of 2.1 GeV at θc.m. =90° in the scaled differential cross section, s7 σ/dt and a rapid fall-off in a center-of-mass energy region of about 400 MeV following the enhancement. Our data show an angular dependence of this enhancement as the suggested scaling region is approached for θc.m. from 70° to 105°. © 2009 American Institute of Physics.