# QCD with an Infrared Fixed Point and a Dilaton

#### QCD with an Infrared Fixed Point and a Dilaton

- Event time: 1:00pm until 3:00pm
- Event date: 31st January 2024
- Speaker: Professor Roman Zwicky (School of Physics & Astronomy, University of Edinburgh)
- Location: Higgs Centre Seminar Room, Room 4305, James Clerk Maxwell Building (JCMB) (James Clerk Maxwell Building (JCMB)) James Clerk Maxwell Building Peter Guthrie Tait Road Edinburgh EH9 3FD GB

### Event details

Title:

QCD with an Infrared Fixed Point and a Dilaton

Abstract:

The possibility that QCD, or a chirally broken phase of a gauge theory, admits an infrared fixed point interpretation is explored. I will first review the conformal window and show that the assumptions lead to a consistent picture, including N=1 supersymmetric gauge theories. Scaling dimensions of the QCD-operators will be determined in various ways by matching it to the pion sector. In a second part I will speculate on a dilaton and discuss some properties from the soft theorem perspective. At last, an outlook is given on the sigma-meson as a dilaton in QCD and it is discussed what dilaton-properties would make it amenable to a Higgs boson interpretation.

### About Particle Physics Theory seminars

The Particle Physics Theory seminar is a weekly series of talks reflecting the diverse interests of the group. Topics include analytic and numerical calculations based on the Standard Model of elementary particle physics, theories exploring new physics, as well as more formal developments in gauge theories and gravity..