https://doi.org/10.1140/epjc/s10052-024-12860-0
Regular Article - Theoretical Physics
SPINAS: spinor amplitude subroutines for constructive diagram evaluations
Department of Physics, Illinois State University, 61790, Normal, IL, USA
Received:
19
March
2024
Accepted:
28
April
2024
Published online:
24
May
2024
SPINAS is a C++ package created for the implementation and numerical computation of phase-space points of constructive amplitudes in particle physics. This package contains a suite of classes and methods for handling particles, propagators, spinor products, and processes. SPINAS is structured to offer straightforward usability while ensuring maximum efficiency. This is achieved through a design that emphasizes the storage and reuse of intermediate results within amplitude calculations for each phase-space point. We include a user guide describing how to use the components, a complete example of how to use SPINAS for a scattering amplitude, a discussion of the design and implementation useful for those wishing to contribute, and a discussion of our validation of this package, including both a validation of individual components of the package and a comparison of a complete set of Standard Model processes with Feynman diagrams.
© The Author(s) 2024
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