介子氢内外的质子结构

IF 9.1 2区 物理与天体物理 Q1 PHYSICS, NUCLEAR
A. Antognini, F. Hagelstein, V. Pascalutsa
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引用次数: 22

摘要

μ介子原子的激光光谱最近被用于以前所未有的精度探测轻原子核的性质。我们介绍了类氢原子中的核效应、核子结构量(形状因子、结构函数、极化率),以及它们在μH的兰姆位移和超精细分裂(HFS)中的影响。给出了以μH为单位的兰姆位移和HFS的最新理论预测。我们回顾了正在进行的测量μH基态HFS的工作所面临的挑战,以及它对我们理解核子自旋结构的影响。为了缩小搜索范围,我们提出了一种新的理论预测,该预测是通过在利用辐射校正的同时缩放氢中测量的HFS而获得的。我们还总结了简单原子和分子系统光谱学的最新发展,并强调了它们如何能够精确测定基本常数、束缚态QED测试和新物理搜索。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The Proton Structure in and out of Muonic Hydrogen
Laser spectroscopy of muonic atoms has been recently used to probe properties of light nuclei with unprecedented precision. We introduce nuclear effects in hydrogen-like atoms, nucleon structure quantities (form factors, structure functions, polarizabilities), and their effects in the Lamb shift and hyperfine splitting (HFS) of muonic hydrogen (μH). Updated theory predictions for the Lamb shift and HFS in μH are presented. We review the challenges of the ongoing effort to measure the ground-state HFS in μH and its impact on our understanding of the nucleon spin structure. To narrow down this search, we present a novel theory prediction obtained by scaling the measured HFS in hydrogen while leveraging radiative corrections. We also summarize recent developments in the spectroscopy of simple atomic and molecular systems and emphasize how they allow for precise determinations of fundamental constants, bound-state QED tests, and New Physics searches.
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来源期刊
CiteScore
21.50
自引率
0.80%
发文量
18
期刊介绍: The Annual Review of Nuclear and Particle Science is a publication that has been available since 1952. It focuses on various aspects of nuclear and particle science, including both theoretical and experimental developments. The journal covers topics such as nuclear structure, heavy ion interactions, oscillations observed in solar and atmospheric neutrinos, the physics of heavy quarks, the impact of particle and nuclear physics on astroparticle physics, and recent advancements in accelerator design and instrumentation. One significant recent change in the journal is the conversion of its current volume from gated to open access. This conversion was made possible through Annual Reviews' Subscribe to Open program. As a result, all articles published in the current volume are now freely available to the public under a CC BY license. This change allows for greater accessibility and dissemination of research in the field of nuclear and particle science.
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