$\bar{K}\Lambda$ molecular explanation to the newly observed $\Xi(1620)^0$ - INSPIRE

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$\bar{K}\Lambda$ molecular explanation to the newly observed $\Xi(1620)^0$

Kan Chen
(
- Lanzhou U. and
- Lanzhou, Inst. Modern Phys.
)
,
Rui Chen
(
- Lanzhou U. and
- Lanzhou, Inst. Modern Phys. and
- Peking U. and
- Peking U., SKLNPT and
- Peking U., CHEP
)
,
Zhi-Feng Sun
(
- Lanzhou U. and
- Lanzhou, Inst. Modern Phys.
)
,
Xiang Liu
(
- Lanzhou U. and
- Lanzhou, Inst. Modern Phys.
)

Jun 13, 2019

8 pages

Published in:

Phys.Rev.D 100 (2019) 7, 074006

Published: Oct 11, 2019

e-Print:

1906.05553 [hep-ph]

DOI:

10.1103/PhysRevD.100.074006

View in:

ADS Abstract Service

reference search15 citations

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Abstract: (APS)

The newly observed Ξ(1620)0 by the Belle Collaboration inspires our interest in performing a systematic study on the interaction of an antistrange meson (K¯(*)) with a strange or doubly strange ground octet baryon B (Λ, Σ, and Ξ), where the spin-orbit force and the recoil correction are considered in the adopted one-boson-exchange model. Our results indicate that Ξ(1620)0 can be explained as a K¯Λ molecular state with I(JP)=1/2(1/2-) and the intermediate force from σ exchange plays an important role. Additionally, we also predict several other possible molecular candidates, i.e., the K¯Σ molecular state with I(JP)=1/2(1/2-) and the triply strange K¯Ξ molecular state with I(JP)=0(1/2-).

Note:

7 pages, 5 figures, and 4 tables

14.20.Pt
12.39.Pn
13.75.Jz
Strong Interactions
Sigma(1620)
baryon: octet
strangeness
bound state
correction: recoil
BELLE

References(43)

Figures(5)

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(
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)
,
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(
- Lanzhou U. and
- Lanzhou, Inst. Modern Phys.
)
,
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(
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)
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(
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(
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)
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)

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