Equation 4 · Part 1 · From Origins to Frontier: A History of Particle Physics Beyond the Standard Model
Symbol c_i
What this part means
a dimensionless Wilson coefficient encoding the strength and structure of whatever heavy new physics generated it.
Its job in the formula
is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.
Full expression→Symbol c_i→Article meaning
Where the article explains it
Here each is a dimension-six operator built from Standard Model fields respecting its gauge symmetries, and is a dimensionless Wilson coefficient encoding the strength and structure of whatever heavy new physics generated it.
The passage around this formula
Here each is a dimension-six operator built from Standard Model fields respecting its gauge symmetries, and is a dimensionless Wilson coefficient encoding the strength and structure of whatever heavy new physics generated it. This is not a discovery claim; it is a bookkeeping device, and its value is precisely that it is agnostic about what the new physics is. A single measured deviation — in a Higgs…
Learn the underlying idea
A subscript is a label attached below a symbol. It often selects a time step, component, category, or member of a sequence.
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The article lists its research sources here.