A Possibility of the Long Range Nuclear Potential by the NNp Three Body Approach and the Pion-Deuteron Scattering Length by Prof. Shinsho Oryu (Department of Physics, Faculty of Science and Technology, Tokyo University of Science)
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Asia/Tokyo
room (RIBF Building)
room
RIBF Building
Description
Lecturer:
Prof. Shinsho Oryu (Department of Physics, Faculty of Science and Technology, Tokyo University of Science)
名誉教授 尾立 晋祥 氏 （東京理科大学理工学部物理）
Title:
Department of Physics, Faculty of Science and Technology, Tokyo University of Science
ＮＮπ３体アプローチによる長距離核力発生の可能性とπーｄ散乱長
Abstract:
Difference between the above and under the three-body break up threshold is emphasized. Under the NN\pi three-body break up threshold, the Born term of the three-body equation makes the one pion exchange NN potential which is an energy dependent two-body quasi (E2Q) potential. Such a E2Q potential could be Fourier transformed, and gives the r-space potential with the energy dependent. After an energy average, we obtained the usual r-space potential which is characterized by the well known Yukawa-type for the short range, but for the long range, the 1/r^2-type, or the 1/r^6-type, or the 1/r^7-type potentials corresponding to the different parameters in the energy average treatment.The 1/r^2 potential leads the Efimov states, and the other two are the London-type and the Cassimere-type Van der Waals potentials. The E2Q potential method will be applied to the pion-deuteron scattering length calculation.
