Baryonic decay and 1p-shell hypernuclear spectroscopy

Majling, L.; Eramzhyan, R.A.; Fetisov, V.N.

doi:10.1007/bf01591401

Cited by 11 publications

(8 citation statements)

References 36 publications

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“…A somewhat more tractable problem is to treat the full 1hω basis of hypernuclear states [37]. This is necessary to (1) treat properly p Λ states in both the p-and sd-shells and (2) estimate decay widths for particle emission from unbound hypernuclear states [38,39], this being the way in which γ transitions in daughter hypernuclei have been studied. of an LS one-body density-matrix (OBDME) for the transition, together with some common factors such as the square of the isospin Clebsch-Gordan coefficient for the transition.…”

Section: Discussionmentioning

confidence: 99%

Section: Thementioning

confidence: 99%

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Shell-model calculations for p-shell hypernuclei

Millener

2012

Nuclear Physics A

126

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The interpretation of hypernuclear γ-ray data for p-shell hypernuclei in terms of shell-model calculations that include the coupling of Λ-and Σ-hypernuclear states is briefly reviewed. Next, 8 Λ Li/ 8 Λ Be and 9 Λ Li are considered, both to exhibit features of Λ-Σ coupling and as possible source of observed, but unassigned, hypernuclear γ rays. Then, the feasibility of measuring the ground-state doublet spacing of 10 Λ Be, which, like 9 Λ Li, could be studied via the (K − , π 0 γ) reaction, is investigated. Structural information relevant to the population of states in these hypernuclei in recent (e, e ′ K + ) studies is also given. Finally, the extension of the shell-model calculations to sd-shell hypernuclei is briefly considered.

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Section: Discussionmentioning

confidence: 99%

Section: Thementioning

confidence: 99%

Shell-model calculations for p-shell hypernuclei

Millener

2012

Nuclear Physics A

126

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“…V B3) suggest an inverted order for this doublet. However, the interpretation of these yields depends on an approximate 1hω shell-model calculation [32] to estimate the population of states in 15 N via proton emission from the 0 + and 2 + states of 16 As outlined in Sec. I A, the structure of p-shell hypernuclei is interpreted in terms of shell-model calculations that include both p n s and p n s configurations.…”

Section: Discussionmentioning

confidence: 99%

“…1). The TISM calculation [32] suggests that the 15 N(1/2 + 2 ) state, rather than the 15 N(3/2 + 2 ) state, is dominantly produced from the 16 O(0 + 2 ) state. On this basis, the 2442-keV γ ray is likely to be the 1/2 + 2 → 1/2 + ; 1 transition.…”

Section: Level Assignmentsmentioning

confidence: 97%

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γ-ray spectroscopy ofΛ16O andΛ15N hypernuclei via the
Ukai¹,
Ajimura²,
Akikawa³
et al. 2008
Phys. Rev. C
44
0
24
0
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The bound-state level structures of the 16 O and 15 N hypernuclei were studied by γ -ray spectroscopy using a germanium detector array (Hyperball) via the 16 O (K − , π − γ ) reaction. A level scheme for 16 O was determined from the observation of three γ -ray transitions from the doublet of states (2 − , 1 − ) at ∼6.7 MeV to the ground-state doublet (1 − , 0 − ). The 15 N hypernuclei were produced via proton emission from unbound states in 16 O. Three γ rays were observed, and the lifetime of the 1/2 + ; 1 state in 15 N was measured by the Doppler shift attenuation method. By comparing the experimental results with shell-model calculations, the spin dependence of the N interaction is discussed. In particular, the measured 16 O ground-state doublet spacing of 26.4 ± 1.6 ± 0.5 keV determines a small but nonzero strength of the N tensor interaction.

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