5 v 2 5 O ct 2 00 1 USM - TH - 106 Photo - production of Nucleon Resonances and Nucleon Spin Structure Function in the Resonance Region
نویسنده
چکیده
The photo-production of nucleon resonances is calculated based on a chiral constituent quark model including both relativistic corrections Hrel and twobody exchange currents, and it is shown that these effects play an important role. We also calculate the first moment of the nucleon spin structure function g1 ( x,Q ) in the resonance region, and obtain a sign-changing point around Q ∼ 0.27 GeV for the proton. Typeset using REVTEX 1
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تاریخ انتشار 2001