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The lightest neutral hypernuclei with strangeness -1 and -2

Abstract : Our current knowledge of the baryon--baryon interaction suggests that the dineutron $(n,n)$ and its strange analogue $(\Lambda,n)$ are unstable. In contrast, the situation is more favourable for the strange three-body system $(n,n,\Lambda)$, and even better for the four-body system $T=(n,n,\Lambda,\Lambda)$ with strangeness $-2$, which is likely to be stable under spontaneous dissociation. This new nucleus could be produced and identified in central deuteron--deuteron collisions via reaction $d+d\to T+K^++K^+$, and the tetrabaryon $T$ could play an important role in catalysing the formation of a strange core in neutron stars.
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Contributor : Sylvie Flores <>
Submitted on : Tuesday, April 15, 2014 - 7:01:41 AM
Last modification on : Tuesday, November 19, 2019 - 2:37:40 AM

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J.-M. Richard, Qian Wang, Qiang Zhao. The lightest neutral hypernuclei with strangeness -1 and -2. Physical Review C, American Physical Society, 2015, 91, pp.014003. ⟨10.1103/PhysRevC.91.014003⟩. ⟨in2p3-00978925⟩

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