Changes

</math>

</math>

Note that the measured cross section only depends on the summed

Note that the measured cross section only depends on the summed

modulus squared of the ''w'' coefficients, and not on their

modulus squared of the ''w'' coefficients, independent of the couplings

individual values or phases. Because of this, the sum over nucleon

to the individual nucleon helicity states. Because of this, the sum over nucleon helicities can be dropped, and the ''w'' factors absorbed into

helicities can be dropped, and the ''w'' factors absorbed into

the ''v'' coefficients.

the ''v'' coefficients by multiplying the ''v'' defined above with

the square root of the above sum.

=== Mass dependence ===

=== Mass dependence ===