Zobrazeno 1 - 10
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pro vyhledávání: '"hyperfine splitting"'
Autor:
Ruth, David, Slifer, Karl, Chen, Jian-Ping, Carlson, Carl E., Hagelstein, Franziska, Pascalutsa, Vladimir, Deur, Alexandre, Kuhn, Sebastian, Ripani, Marco, Zheng, Xiaochao, Zielinski, Ryan, Gu, Chao
The 1S hyperfine splitting in hydrogen is measured to an impressive ppt precision and will soon be measured to ppm precision in muonic hydrogen. The latter measurement will rely on theoretical predictions, which are limited by knowledge of the proton
Externí odkaz:
http://arxiv.org/abs/2406.18738
Autor:
Pachucki, Krzysztof
A general quantum electrodynamic method for derivation of nuclear recoil corrections in hydrogenic systems, which are exact in the nuclear charge parameter $Z\,\alpha$, is introduced. The exemplary derivation is presented for the $O(m/M)$ nuclear pur
Externí odkaz:
http://arxiv.org/abs/2403.11663
The potential existence of a fifth fundamental force, mediated by the X17 boson, has generated significant interest. This force can manifest itself as either a vector or pseudoscalar particle. In order to gain insight into the effective potentials pr
Externí odkaz:
http://arxiv.org/abs/2312.13060
Autor:
Han, J. Z., Lu, B. Q., Xin, N. C., Yu, Y. M., Qin, H. R., Chen, S. T., Zheng, Y., Li, J. G., Zhang, J. W., Wang, L. J.
We report precise measurement of the hyperfine splitting and calculation of the Zeeman coefficients of the $^{171}$Yb$^+$ ground state. The absolute hyperfine splitting frequency is measured using high-resolution laser-microwave double-resonance spec
Externí odkaz:
http://arxiv.org/abs/2309.05323
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Akademický článek
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We present a detailed derivation of the QED effects of order $\alpha^7\,m$ to the hyperfine structure (hfs) of the $^3S$ states of helium-like ions and perform numerical calculations for $^6$Li$^+$ and $^7$Li$^+$. By comparing the theoretical point-n
Externí odkaz:
http://arxiv.org/abs/2309.00436
Publikováno v:
Phys. Rev. Lett. 131, 183001 (2023)
We present a calculation of the hyperfine splitting of the $2^3S$ state in the $^3$He atom with inclusion of all QED effects up to $\alpha^3E_F$, where $E_F$ is the Fermi splitting. Using the experimental value of the $1S$ hyperfine splitting in $^3$
Externí odkaz:
http://arxiv.org/abs/2304.12274
Autor:
Krachkov, Petr A., Lee, Roman N.
We revisit the contributions of order $\alpha^2(Z\alpha)^5m$ and $\alpha^2(Z\alpha)E_F$, respectively, to the Lamb shift and to the hyperfine splitting from mixed self-energy-vacuum-polarization diagrams, involving fermionic loop. We use modern multi
Externí odkaz:
http://arxiv.org/abs/2306.13369
Publikováno v:
Eur. Phys. J. C 83 (2023) 8, 762
The ongoing experimental efforts to measure the hyperfine transition in muonic hydrogen prompt an accurate evaluation of the proton-structure effects. At the leading order in $\alpha$, which is $O(\alpha^5)$ in the hyperfine splitting (hfs), these ef
Externí odkaz:
http://arxiv.org/abs/2305.09633