arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2406.03572nucl-thhep-ph
收藏

通过折叠最先进的ΞN相互作用研究$_Ξ^{5}H $超核

$_Ξ^{5}H $ hypernuclei by folding the state-of-the-art $ ΞN $ interactions

Faisal Etminan

AI总结:

本文通过折叠Nijmegen和HAL QCD两种ΞN势研究αΞ相互作用,发现$_Ξ^{5}H $仅为阈下约0.5 MeV的库仑辅助共振态。

摘要:

我考察了唯象的Nijmegen势和第一性原理的HAL QCD ΞN势,以研究αΞ相互作用。利用自旋和同位旋平均的ΞN相互作用,在单折叠势方法中导出了Woods-Saxon型αΞ势形式。搜索了共振态或束缚态的可能性,并据此计算了αΞ的低能散射相移参数。数值结果表明,尽管两种ΞN势在同位旋(I)和自旋(S)分量上存在显著差异,但对于两种势模型,$_Ξ^{5}H $都只能是一个库仑辅助的共振态,出现在α+Ξ^{-}阈下约0.5 MeV处。

英文摘要:

I examined a phenomenological Nijmegen and a first principles HAL QCD $ΞN$ potentials to study $αΞ$ ineractions. A Woods-Saxon type form for $αΞ$ potential in the single-folding potential approach is derived by using the spin- and isospin averaged $ΞN$ interactions. The possibility of resonance or bound state is searched and accordingly, the low energy scattering phase shift parameters of $αΞ$ are calculated. The numerical results show that even though two $ ΞN $ potentials have significantly dissimilar isospin (I) and spin (S) components, $_Ξ^{5}H $ could be only a Coulomb-assisted resonance state that appears about $ 0.5 $ MeV below the threshold of $α+Ξ^{-} $ for both model of potentials.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑