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Equation 2 · Part 1 · How Particle Physics Beyond the Standard Model Actually Works

Symbol theta_23

θ23\theta_{23}
θ23\theta_{23}

What this part means

theta2a_23 is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.

Its job in the formula

theta2a_23 is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.

The passage around this formula

What an experiment like T2K or NOvA reports is not a discovery of new particles but a set of numbers: mixing angles ( θ12\theta_{12} , θ23\theta_{23} , θ13\theta_{13} ) and the mass-squared differences between neutrino mass states, extracted from how oscillation probability varies with neutrino energy over a fixed baseline. A joint 2024 analysis combining a decade of T2K data with six years of NOvA data pushed the precision on one…

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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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