YoVDO

From QCD Axion to the Relaxion - Electroweak Hierarchy Problem and Relaxion Mechanisms

Offered By: Galileo Galilei Institute via YouTube

Tags

Particle Physics Courses Cosmology Courses Dark Matter Courses Quantum Chromodynamics Courses Higgs Boson Courses

Course Description

Overview

Save Big on Coursera Plus. 7,000+ courses at $160 off. Limited Time Only!
Explore the intricacies of particle physics and cosmology in this 42-minute lecture by Aleksandr Chatrchyan at the Galileo Galilei Institute. Delve into the electroweak hierarchy problem and its implications for the Higgs mass. Examine the relaxion mechanism, including QCD and non-QCD models, and understand the stochastic formalism. Discover the dynamics of stopping and the parameter space for non-QCD relaxion. Investigate relaxion interactions, stochastic misalignment, and the potential for relaxion dark matter. Conclude with insights into the clockwork mechanism for generating large field ranges. Gain a comprehensive understanding of cutting-edge theories in particle physics and their cosmological implications.

Syllabus

Intro
Outline of the talk
Electroweak hierarchy problem The Higgs mass is sensitive to UV physics!
The (GKR) relaxion mechanism
The QCD and nonQCD models
The QCD model with a change of slope
The stochastic formalism
Illustration of the dynamics & stopping
NonQCD relaxion parameter space
Interactions of the relaxion
Stochastic misalignment
Relaxion DM window (nonQCD model)
Summary
Large field range from the clockwork mechanism


Taught by

Galileo Galilei Institute

Related Courses

The Discovery of the Higgs Boson
University of Edinburgh via FutureLearn
Particle physics
The Open University via OpenLearn
A Detector for EIC and Detector R&D
International Centre for Theoretical Sciences via YouTube
A Golden Age in Physics - Heavy Ion Physics at High Energies
International Centre for Theoretical Sciences via YouTube
Anisotropic Photon Emission from Gluon Fusion and Splitting in Peripheral Heavy-Ion Collisions with Strong Magnetic Background
ICTP-SAIFR via YouTube