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arXiv 2302.07356nucl-ex
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横电荷密度与质子半径的讨论

Comment on Transverse Charge Density and the Radius of the Proton

Benjamin Boone, Michael Chen, Kevin Sturm, Justin Yoo, Douglas Higinbotham

摘要:

质子的电荷半径通常通过提取质子的电形状因子并然后利用该形状因子在零四动量转移下的导数从电子-质子散射确定。不幸的是,在实验上,人们不能测量到零的四动量转移,因此经常需要外推。在Alexander Gramolin和Rebecca Russell的工作中,他们提出了一种不使用斜率的新方法,并发现了与许多其他最近结果相矛盾的质子半径。我们对他们的论文的分析讨论了这种方法的一些问题,我们表明,通过简单地改变数据的分箱和/或包括一组额外的数据,结果会发生显着变化。

英文摘要:

The charge radius of the proton is typically determined from electron-proton scattering by extracting the proton's electric form factor and then making use of the derivative of that form factor at zero four-momentum transfer. Unfortunately, experimentally, one cannot measure to zero four-momentum transfer and thus extrapolation is often required. In the work of Alexander Gramolin and Rebecca Russell, they present a novel method that does not use the slope and found a radius of the proton that contradicts many other recent results. Our analysis of their paper discusses some issues with this method and we show that by simply changing the binning of the data and/or including an additional set of data the results change dramatically.

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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