Changes

Let's begin with a general amplitude for the two-body decay of a state with angular momentum quantum numbers ''J'',''m''. Specifically, we want to know the amplitude of this state having daughter 1 with trajectory <math>\Omega=(\phi,\theta)</math>.

Let's begin with a general amplitude for the two-body decay of a state with angular momentum quantum numbers ''J'',''m''. Specifically, we want to know the amplitude of this state having daughter 1 with trajectory <math>\Omega=(\phi,\theta)</math>.

We can also describe the angular momentum between the daughters as being ''L'' and spin sum as ''s''. Alternatively, we will label the daughters as having helicities of <math>\lambda_1</math> and <math>\lambda_2</math> - projections on the direction of decay (specified by daughter 1) of

We can also describe the angular momentum between the daughters as being ''L'' and spin sum as ''s''. Alternatively, we will label the daughters as having helicities of <math>\lambda_1</math> and <math>\lambda_2</math> - projections on the direction of decay (specified by daughter 1)  

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