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Phys. Rev. C 65, 015202 (2001) [8 pages]

Photoproduction of nucleon resonances and nucleon spin structure function in the resonance region

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Di Qing1,2 and Iván Schmidt1
1Departamento de Física, Universidad Técnica Federico Santa María, Casilla 110-V, Valparaíso, Chile
2Institute of Modern Physics, Southwest Jiaotong University, Chengdu 610031, China

Received 20 June 2001; published 30 November 2001

The photoproduction of nucleon resonances is calculated based on a chiral constituent quark model including both relativistic corrections Hrel and two-body 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,Q2) in the resonance region, and obtain a sign-changing point around Q20.27GeV2 for the proton.

© 2001 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.65.015202
DOI:
10.1103/PhysRevC.65.015202
PACS:
13.60.Rj, 13.60.-r, 13.60.Hb, 14.20.Gk