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首页> 外文期刊>The European physical journal, D. Atomic, molecular, and optical physics >Internal structure and positron annihilation in the four-body MuPs system
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Internal structure and positron annihilation in the four-body MuPs system

机译:四体MuPs系统的内部结构和正电子an灭

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摘要

A large number of bound state properties of the four-body muonium-positronium system MuPs (or mu(+) e(2)(-) e(+)) are determined to high accuracy. Based on these expectation values we predict that the weakly-bound four-body MuPs system has the 'two-body' cluster structure Mu + Ps. The two neutral clusters Mu (mu(+) e(-)) and Ps (e(+) e(-)) interact with each other by the attractive van der Waals forces. By using our expectation values of the electron-positron delta-functions we evaluated the half-life tau(alpha) of the MuPs system against annihilation of the electron-positron pair: tau(alpha) = 1/P approximate to 4.071509 x 10(-10) s. The hyperfine structure splitting of the ground state in the MuPs system evaluated with our expectation values is Delta approximate to 23.064(5) MHz.
机译:高精度确定了四体mu-(系统MuPs(或mu(+)e(2)(-)e(+))的大量束缚态性质。根据这些期望值,我们预测弱绑定的四体MuPs系统具有“两体”簇结构Mu + Ps。两个中性簇Mu(mu(+)e(-))和Ps(e(+)e(-))通过有吸引力的范德华力相互作用。通过使用我们对电子-正电子三角函数的期望值,我们针对电子-正电子对的an灭评估了MuPs系统的半衰期tauα,tauα= 1 / P约为4.071509 x 10( -10)秒。用我们的期望值评估的MuPs系统中基态的超精细结构分裂为Delta,近似于23.064(5)MHz。

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