Abstract: i new method of getting bounds on scattering lengths has been recently described (~) and applied to improve the known bounds on the S-wave scattering length oo The a 0 9 basic idea is to use Roy's equations as a way of imposing analyticity and crossing constraints. Therefore, the method is in principle applicable to other waves by using the corresponding Roy's equation. The P-wave equation is particularly simple when (~) and allows a simple computation of a bound on a~ n, which is written in terms of a~ depends on the D-wave scattering length a...
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Topics: 
Quantum electrodynamics
Computational physics
Nuclear physics