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Equation 9 · Part 1 · From Origins to Frontier: A History of Particle Physics Beyond the Standard Model

Symbol a_mu

aμ(FNAL)=116,592,040(54)×10−11a_\mu(\text{FNAL}) = 116{,}592{,}040(54)\times10^{-11}
aμa_\mu

What this part means

ama_mu is part of the quantity the equation computes from the expression on the right.

Its job in the formula

ama_mu is part of the quantity the equation computes from the expression on the right.

The passage around this formula

Contrast that with the muon’s anomalous magnetic moment, aμa_\mu = (g-2)/2 , which remains unresolved. The Fermilab Muon g-2 experiment’s most precise measurement to date, released in August 2023, gives aμ(FNAL)a_\mu(\text{FNAL}) = 116{,}592{,}040(54)×\times10^{-11} , a result precise to 0.20 parts per million [ 5 , 6 ] . Combined with the experiment’s earlier…

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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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Sources cited in the surrounding passage

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