期刊
PHYSICAL REVIEW C
卷 84, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.84.065202
关键词
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资金
- US Department of Energy [DE-FG0287ER40365]
- US National Science Foundation [PHY-0854805]
- Division Of Physics
- Direct For Mathematical & Physical Scien [0854805] Funding Source: National Science Foundation
We revisit the photo-absorption sum rule for real Compton scattering from the proton and from nuclear targets. In analogy with the Thomas-Reiche-Kuhn sum rule appropriate at low energies, we propose a new constituent quark model sum rule that relates the integrated strength of hadronic resonances to the scattering amplitude on constituent quarks. We study the constituent quark model sum rule for several nuclear targets. In addition, we extract the alpha = 0 pole contribution for both proton and nuclei. Using the modern high-energy proton data, we find that the alpha = 0 pole contribution differs significantly from the Thomson term, in contrast with the original findings by Damashek and Gilman.
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