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Amplitudes for the Exotic b1π Decay (view source)
Revision as of 00:25, 20 August 2011
, 00:25, 20 August 2011→Proton states and individual decay amplitudes
modulus squared of the ''w'' coefficients, independent of the couplings
modulus squared of the ''w'' coefficients, independent of the couplings
to the individual nucleon helicity states. Because of this, the sum over nucleon helicities can be dropped, and the ''w'' factors absorbed into
to the individual nucleon helicity states. Because of this, the sum over nucleon helicities can be dropped, and the ''w'' factors absorbed into
the ''v'' coefficients.
the ''v'' coefficients. Thus the final expression for the differential cross section contains no reference to the quantum numbers <math>\epsilon_i, \epsilon_f</math>, nor to any ''w'' coefficients. It is important to recognize that this simplification of the cross section is only possible in the case of an unpolarized target and no recoil polarimetry.
=== Mass dependence ===
=== Mass dependence ===