Heidelberg 2022 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 31: Beyond the Standard Model (Theory) 1

T 31.1: Vortrag

Dienstag, 22. März 2022, 16:15–16:30, T-H16

Constructing Effective Field Theories to Higher Mass Dimensions — Robert V. Harlander, Tim Kempkens, Jakob W. Linder, and •Magnus C. Schaaf — Institute for Theoretical Particle Physics and Cosmology, RWTH Aachen University

The Standard Model Effective Field Theory (SMEFT) provides a framework to parametrise the effects of yet unseen heavy degrees of freedom in a model independent way. While in recent years the interest in higher-dimensional operators has increased, the construction of a complete and minimal set of operators is remarkably challenging. In this talk, I will report on the implementation of a recently proposed group-theoretical algorithm for the construction of an operator basis. It systematically takes into account the redundancies which arise due to equations of motion and integration-by-parts identities among the operators. The resulting program can be applied to phenomenologically relevant theories like the Standard Model or extensions of it, including new light particles and additional symmetry groups.