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arXiv 1303.4885hep-phgr-qcnucl-exphysics.atom-ph
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质子半径之谜与大额外维

Proton radius puzzle and large extra dimensions

Li-Bang Wang, Wei-Tou Ni

摘要:

我们提出了一个理论方案来解决质子半径之谜,最近出现的μ介子氢实验。在这个框架中,4 + n维理论与修正引力相结合。质子和μ子之间在很短的距离内的额外引力相互作用提供了一个能量转移,这解释了μ子和电子氢实验的光谱结果之间的差异。假设修正引力是对现有电磁相互作用的一个小扰动,我们发现这个难题可以在严格限制新力的范围的情况下得到解决。我们的结果不仅为质子半径之谜提供了一个可能的解答,而且为在极小尺度上检验新物理提供了一个方向。

英文摘要:

We propose a theoretical scenario to solve the proton radius puzzle which recently arises from the muonic hydrogen experiment. In this framework, 4 + n dimensional theory is incorporated with modified gravity. The extra gravitational interaction between the proton and muon at very short range provides an energy shift which accounts for the discrepancy between spectroscopic results from muonic and electronic hydrogen experiments. Assuming the modified gravity is a small perturbation to the existing electromagnetic interaction, we find the puzzle can be solved with stringent constraint on the range of the new force. Our result not only provides a possible solution to the proton radius puzzle but also suggest a direction to test new physics at very small length scale.

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。

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