Weak mixing angle in electroweak theory

weakMixingAngle is the Weinberg angle, a parameter describing how electromagnetic and weak interactions arise from electroweak gauge fields.

Meaning

Its sine and cosine enter relations among electroweak couplings and boson masses. Use sin and cos when evaluating a formula expressed in radians, and compare fundamental electromagnetic scales with fineStructure.

Caveats

The precise effective value can depend on energy scale and renormalization convention. Do not treat it as a universal geometric angle; use the stated convention in a source and pow carefully when a formula uses sin²θ.

Use Weak Mixing Angle in a calculation

Enter weakMixingAngle on a calculator line to see its built-in value, or place the name inside a longer expression. Keep any displayed unit attached when converting or combining physical quantities, and check that every other value uses a compatible dimension.

The example above is editable, so you can replace surrounding values and test the constant in your own formula. Browse all constants to compare related values and notation.