TY - JOUR
T1 - ΛΛN-ΞNN S wave resonance
AU - Garcilazo, H.
AU - Valcarce, A.
N1 - Publisher Copyright:
© 2020 Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Sciences and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd.
PY - 2020/10
Y1 - 2020/10
N2 - We use an existing model of the ΛΛN-ΞNN three-body system based on two-body separable interactions to study the three-body channel. For the ΛΛ, ΞN, and ΛΛN-ΞNN amplitudes, we have constructed separable potentials based on the most recent results of the HAL QCD Collaboration. They are characterized by the existence of a resonance just below or above the ΞN threshold in the H-dibaryon channel, (i, jp) = 0,0+). A three-body resonance appears 2.3 MeV above the Ξd threshold. We show that if the ΛΛ-ΞN H-dibaryon channel is not considered, the ΛΛN-ΞNN S wave resonance disappears. Thus, the possible existence of a ΛΛN-ΞNN resonance would be sensitive to the ΛΛN-ΞNN interaction. The existence or nonexistence of this resonance could be evidenced by measuring, for example, the Ξd cross section.
AB - We use an existing model of the ΛΛN-ΞNN three-body system based on two-body separable interactions to study the three-body channel. For the ΛΛ, ΞN, and ΛΛN-ΞNN amplitudes, we have constructed separable potentials based on the most recent results of the HAL QCD Collaboration. They are characterized by the existence of a resonance just below or above the ΞN threshold in the H-dibaryon channel, (i, jp) = 0,0+). A three-body resonance appears 2.3 MeV above the Ξd threshold. We show that if the ΛΛ-ΞN H-dibaryon channel is not considered, the ΛΛN-ΞNN S wave resonance disappears. Thus, the possible existence of a ΛΛN-ΞNN resonance would be sensitive to the ΛΛN-ΞNN interaction. The existence or nonexistence of this resonance could be evidenced by measuring, for example, the Ξd cross section.
KW - Faddeev equations
KW - baryon-baryon interactions
UR - http://www.scopus.com/inward/record.url?scp=85089263641&partnerID=8YFLogxK
U2 - 10.1088/1674-1137/abab8c
DO - 10.1088/1674-1137/abab8c
M3 - Artículo
AN - SCOPUS:85089263641
SN - 1674-1137
VL - 44
JO - Chinese Physics C
JF - Chinese Physics C
IS - 10
M1 - 104104
ER -