We can also describe the angular momentum between the daughters as being ''L'' and their spin sum as ''s''. Alternatively, we will label the daughters as having helicities of <math>\lambda_1</math> and <math>\lambda_2</math> - projections of the two particles' spins onto their respective momentum directions. | We can also describe the angular momentum between the daughters as being ''L'' and their spin sum as ''s''. Alternatively, we will label the daughters as having helicities of <math>\lambda_1</math> and <math>\lambda_2</math> - projections of the two particles' spins onto their respective momentum directions. |