Helicity formalism for transition amplitudes | Zendy

Giampiero Passarino | Zendy

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Helicity formalism for transition amplitudes

Author(s) -

Giampiero Passarino

Publication year - 1983

Publication title -

physical review. d. particles, fields, gravitation, and cosmology/physical review. d. particles and fields

Language(s) - English

Resource type - Journals

eISSN - 1089-4918

pISSN - 0556-2821

DOI - 10.1103/physrevd.28.2867

Subject(s) - helicity , physics , amplitude , radiative transfer , formalism (music) , quantum electrodynamics , polarization (electrochemistry) , particle physics , atomic physics , quantum mechanics , art , musical , visual arts , chemistry

Transition amplitudes between states with spin < or =1 are considered and directly evaluated in terms of momenta and polarization vectors. A special algorithm is derived to reduce expressions where ..gamma.. matrices of different lines are saturated. The application of the method is illustrated for radiative and nonradiative processes, including mass effects.

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