Constraining EFTs in a Theory with Light Composite Scalars

20 Jun 2019, 16:30
20m
Shimao 3B

Shimao 3B

Parallel Physics Beyond the Standard Model Physics Beyond the Standard Model

Speaker

George Fleming (Yale University)

Description

The Lattice Strong Dynamics (LSD) collaboration has been studying SU(3) Yang-Mills with eight light flavors of Dirac fermions. This theory has accumulating numerical evidence for near conformal dynamics and a light composite isosinglet scalar meson. It could serve as a prototype of a composite Higgs sector if a reliable low-energy Effective Field Theory (EFT) could be identified. Several candidate EFTs have been proposed. I will summarize our efforts to constrain these EFTs using computed observables, including pion and scalar masses, decay constants and scattering lengths.

Primary author

George Fleming (Yale University)

Presentation Materials