Table 1 Error budget

From: Stringent test of QED with hydrogen-like tin

Parameter

Relative shift (ppt)

Uncertainty (ppt)

Γ0 = νL/νc error budget:

  

ν− measurement

–

3.8

Relativistic shift54

23.7

4.8

Image-charge shift55

150

7.5

νz line shape

–

20

Statistical uncertainty

–

38

g-factor error budget:

  

Total Γ0 uncertainty

 

44

Electron mass26,31

 

29

118Sn49+ mass (this work)

 

475

  1. The error budgets of Γ0 and g are shown. Further contributions are smaller than 1 ppt, allowing to safely ignore them. More details can be found in the text and in Methods.
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