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Kaon transverse charge density from space- and timelike data

机译:来自空间和时间般数据的Kaon横向电荷密度

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We used the world data on the kaon form factor to extract the transverse kaon charge density using a dispersion integral of the imaginary part of the kaon form factor in the timelike region. Our analysis includes recent data from e(+)e(-) annihiliation measurements extending the kinematic reach of the data into the region of high momentum transfers conjugate to the region of short transverse distances. To calculate the transverse density we created a superset of both timelike and spacelike data and developed an empirical parameterization of the kaon form factor. The spacelike set includes two new data points we extracted from existing cross section data. We estimate the uncertainty on the resulting transverse density to be 5% at b = 0.025 fm and significantly better at large distances. New kaon data planned with the 12 GeV Jefferson Lab may have a significant impact on the charge density at distances of b 0.1 fm.
机译:我们使用kaon形状因子的世界数据,利用类时间区域中kaon形状因子虚部的色散积分来提取横向kaon电荷密度。我们的分析包括最近的e(+)e(-)电离测量数据,将数据的运动学范围扩展到高动量转移区域,共轭到短横向距离区域。为了计算横向密度,我们创建了一个类时间和类空间数据的超集,并开发了kaon形状因子的经验参数化。该类空间集包括我们从现有横截面数据中提取的两个新数据点。我们估计,在b=0.025 fm时,产生的横向密度的不确定度为5%,在大距离时,不确定度显著提高。12 GeV杰斐逊实验室计划的新kaon数据可能对b;0.1调频。

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