Equation 7 · Part 1 · How Particle Physics Beyond the Standard Model Actually Works

Symbol Lambda

\Lambda

\Lambda

What this part means

the mass scale of whatever new physics has been integrated out.

Its job in the formula

Lambda is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.

Full expressionSymbol LambdaArticle meaning

Where the article explains it

Here $\mathcal{O}_i$ are Standard-Model-field operators of dimension six, $c_i$ are unknown coefficients, and $\Lambda$ is the mass scale of whatever new physics has been integrated out.

The passage around this formula

Here $\mathcal{O}_i$ are Standard-Model-field operators of dimension six, $c_i$ are unknown coefficients, and $\Lambda$ is the mass scale of whatever new physics has been integrated out. This is the Standard Model Effective Field Theory (SMEFT) framework used across current LHC and dark-matter searches. Its value is precise and limited: it lets an experiment quote a model-independent bound on $c_i$ / $\Lambda^2$ …

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Learn the underlying idea

A variable is a named place for a value. Its letter is a local label: x can mean position in one formula and a data point in another.

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See this notation across published equations →

The article lists its research sources here.