TY - GEN
T1 - Structure of four-baryon systems
AU - Hiyama, E.
PY - 2008/5/26
Y1 - 2008/5/26
N2 - We discuss the structure of 4He, Λ 4H, Λ4He and ΛΛ4H. The calculated impulse approximation transition form factor 4He(e, e′)4He(0 2+) agrees with the available data. It is found that a major part of the energy-weighted E0 sum rule value is exhausted by nonresonant, low-energy continuum states other than the second 0+ state. Precise four-body calculations have been performed for Λ4He and Λ4H taking explicitly into account the NNNΛ and NNNΣ channels and for ΛΛ 4H with NNΛΛ and NNNΞ, channels included. The role of ΛN-ΣN coupling in Λ4He and Λ4H and the role of ΛΛ-ΞN coupling in ΛΛ4H are important.
AB - We discuss the structure of 4He, Λ 4H, Λ4He and ΛΛ4H. The calculated impulse approximation transition form factor 4He(e, e′)4He(0 2+) agrees with the available data. It is found that a major part of the energy-weighted E0 sum rule value is exhausted by nonresonant, low-energy continuum states other than the second 0+ state. Precise four-body calculations have been performed for Λ4He and Λ4H taking explicitly into account the NNNΛ and NNNΣ channels and for ΛΛ 4H with NNΛΛ and NNNΞ, channels included. The role of ΛN-ΣN coupling in Λ4He and Λ4H and the role of ΛΛ-ΞN coupling in ΛΛ4H are important.
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U2 - 10.1063/1.2932275
DO - 10.1063/1.2932275
M3 - Conference contribution
AN - SCOPUS:43949139591
SN - 9780735405318
T3 - AIP Conference Proceedings
SP - 109
EP - 115
BT - NEW FACET OF THREE NUCLEON FORCE - 50 YEARS OF FUJITA MIYAZAWA THREE NUCLEON FORCE (FM50) - Proceedings of the International Symposium
T2 - International Symposium on New Facets of the Three Nucleon Force - 50 Years of the Fujita-Miyazawa Three Nucleon Force, FM50
Y2 - 29 October 2007 through 31 October 2007
ER -