ALOHA: Automatic Libraries Of Helicity Amplitudes for Feynman Diagram Computations

We present an application that automatically writes the Helas (HELicity Amplitude Subroutines) library corresponding to the Feynman rules of any quantum field theory Lagrangian. The code is written in Python and takes the Universal FeynRules Output ( Ufo ) as an input. From this input it produces the complete set of routines, wave-functions and amplitudes, that are needed for the computation of Feynman diagrams at leading as well as at higher orders. The representation is language independent and currently it can output routines in Fortran , C++ , and Python . A few sample applications implemented in the MadGraph 5 framework are presented.

Note:

20 pages

Phenomenological and Empirical Models and Theories
Helicity Routine
Matrix Element
BSM theories
Feynman graph
particle: wave function
Monte Carlo
computer
Lagrangian formalism
minimal supersymmetric standard model

References(24)

Figures(3)

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