An $α^{2}(Z α)^{5}m$ Contribution to the Hydrogen Lamb Shift from Virtual Light by Light Scattering

Details An $α^{2}(Z α)^{5}m$ Contribution to the Hydrogen Lamb Shift from Virtual Light by Light Scattering An $α^{2}(Z α)^{5}m$ Contribution to the Hydrogen Lamb Shift from Virtual Light by Light Scattering

1994-02-16

arxiv.org/abs/hep-ph/9402304v1

Phys.Rev. A50 (1994) 144

Physics

High Energy Physics

High Energy Physics - Phenomenology

pages, Penn State Preprint PSU/TH/142, February 1994

Scientific paper

10.1103/PhysRevA.50.144

The radiative correction to the Lamb shift of order $\alpha^{2}(Z\alpha)^5m$ induced by the light by light scattering insertion in external photons is obtained. The new contribution turns out to be equal to $-0.122(2)\alpha^2(Z\alpha)^5/(\pi n^3)(m_r/m)^3m$. Combining this contribution with our previous results we obtain the complete correction of order $\alpha^{2}(Z\alpha)^5m$ induced by all diagrams with closed electron loops. This correction is $37.3(1)$ kHz and $4.67(1)$ kHz for the $1S$- and $2S$-states in hydrogen, respectively.

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