Beyond the Standard Model: Hierarchy Problem

This lecture delves into the motivation for Beyond the Standard Model (BSM) physics, exploring observational evidence such as neutrino masses and dark matter. It discusses the hierarchy problem in theory space, scanning relevant parameters and the lack of symmetry protecting them, leading to fine-tuning issues. Theoretical aspects like the Electroweak hierarchy problem, Cosmological constant problem, and Strong CP problem are also covered, along with possible solutions like Supersymmetry and quantum gravity. The lecture concludes with a detailed analysis of the fine-tuning problem and the introduction of UV theories to address it.