TY - JOUR
T1 - Possible Lightest Ξ Hypernucleus with Modern ΞN Interactions
AU - Hiyama, E.
AU - Sasaki, K.
AU - Miyamoto, T.
AU - Doi, T.
AU - Hatsuda, T.
AU - Yamamoto, Y.
AU - Rijken, Th A.
PY - 2020/3/6
Y1 - 2020/3/6
N2 - Experimental evidence exists that the Ξ-nucleus interaction is attractive. We search for NNΞ and NNNΞ bound systems on the basis of the AV8 NN potential combined with either a phenomenological Nijmegen ΞN potential or a first principles HAL QCD ΞN potential. The binding energies of the three-body and four-body systems (below the d+Ξ and H3/He3+Ξ thresholds, respectively) are calculated by a high precision variational approach, the Gaussian expansion method. Although the two ΞN potentials have significantly different isospin (T) and spin (S) dependence, the NNNΞ system with quantum numbers (T=0, Jπ=1+) appears to be bound (one deep for Nijmegen and one shallow for HAL QCD) below the H3/He3+Ξ threshold. Experimental implications for such a state are discussed.
AB - Experimental evidence exists that the Ξ-nucleus interaction is attractive. We search for NNΞ and NNNΞ bound systems on the basis of the AV8 NN potential combined with either a phenomenological Nijmegen ΞN potential or a first principles HAL QCD ΞN potential. The binding energies of the three-body and four-body systems (below the d+Ξ and H3/He3+Ξ thresholds, respectively) are calculated by a high precision variational approach, the Gaussian expansion method. Although the two ΞN potentials have significantly different isospin (T) and spin (S) dependence, the NNNΞ system with quantum numbers (T=0, Jπ=1+) appears to be bound (one deep for Nijmegen and one shallow for HAL QCD) below the H3/He3+Ξ threshold. Experimental implications for such a state are discussed.
UR - http://www.scopus.com/inward/record.url?scp=85081280372&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85081280372&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.124.092501
DO - 10.1103/PhysRevLett.124.092501
M3 - Article
C2 - 32202898
AN - SCOPUS:85081280372
VL - 124
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 9
M1 - 092501
ER -