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The pseudo-scalar form factor of the nucleon, the sigma-like term, and the L-0(+) amplitude for charged pion electro-production near threshold
- Authors
- Cheoun, Myung Ki; Kim, K. S.
- Issue Date
- 22-Feb-2007
- Publisher
- ELSEVIER SCIENCE BV
- Citation
- PHYSICS LETTERS B, v.645, no.5-6, pp.422 - 426
- Journal Title
- PHYSICS LETTERS B
- Volume
- 645
- Number
- 5-6
- Start Page
- 422
- End Page
- 426
- ISSN
- 0370-2693
- Abstract
- The pseudo-scalar form factor, which represents the pseudo-scalar quark density distribution due to finite quark masses on the nucleon, is shown to manifest itself with the induced pseudo-scalar form factor in the L-0(+) amplitude for the charged pion electro-production. Both form factors show their own peculiar momentum dependence. Under the approximation on which the Goldberger-Treiman relation holds, a sum of both form factors' contributions accounts for the t-channel contribution in the charged pion electro-production near threshold. (c) 2007 Elsevier B.V. All rights reserved.
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Related Researcher
- Cheoun, Myung-Ki
- College of Natural Sciences (Department of Physics)