Q(2) Evolution Of The Generalized Gerasimov-Drell-Hearn Integral For The Neutron Using A He-3

PHYSICAL REVIEW LETTERS(2002)

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摘要
We present data on the inclusive scattering of polarized electrons from a polarized He-3 target at energies from 0.862 to 5.06 GeV, obtained at a scattering angle of 15.5degrees. Our data include measurements from the quasielastic peak, through the nucleon resonance region, and beyond, and were used to determine the virtual photon cross-section difference sigma(1/2)-sigma(3/2). We extract the extended Gerasimov-Drell-Hearn integral for the neutron in the range of four-momentum transfer squared Q(2) of 0.1-0.9 GeV2.
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关键词
momentum transfer,cross section
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