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PARITY NONCONSERVATION IN ~(10)B-NUCLEUS

机译:〜(10)B核中的奇偶性非守恒

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摘要

The γ-circular polarization (P_γ) and asymmetries (A_γ) of the parity forbidden M1 + E2 γ- decays: ~(10)B~*(J~π = 2~-T = 0; E_x = 5.11 MeV) → ~(10)B~*(J~π = 1~+T = 0; E_x = = 0.72 MeV) as well as the PNC analyzing powers for ~9Be(p,α)~6Li resonance reaction populating the parity (2~±) doublet at 7.47 MeV have been investigated theoretically. We use the recently proposed Warburton-Brown shell model interaction. For the weak forces we discuss comparatively different weak interaction models based on different assumptions for evaluating the weak meson-hadron coupling constants. The results determine a range of P_γ - values from which we find the most probable values: P_γ = 3.7·10~(-4) for the 5.11 MeV doublet and A_(L(b)) ≈ 0.6·10~(-5) for the 7.47 MeV doublet. These cases seem to be promising for further experimental tests of parity nonconservation in nuclei.
机译:奇偶禁止的M1 + E2γ-的γ圆极化(P_γ)和不对称性(A_γ)衰减:〜(10)B〜*(J〜π= 2〜-T = 0; E_x = 5.11 MeV)→〜 (10)B〜*(J〜π= 1〜+ T = 0; E_x = = 0.72 MeV)以及〜9Be(p,α)〜6Li共振反应的PNC分析能力(2〜±理论上已经研究了7.47 MeV的双峰。我们使用最近提出的Warburton-布朗壳模型交互作用。对于弱力,我们基于评估弱介子-强子耦合常数的不同假设,讨论了相对不同的弱相互作用模型。结果确定了一个P_γ-值范围,从中我们可以找到最可能的值:5.11 MeV双峰和A_(L(b))≈0.6·10〜(-5)的P_γ= 3.7·10〜(-4)为7.47 MeV双重峰。这些情况对于核中奇偶性不保守的进一步实验测试似乎是有希望的。

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