Beyond The Standard Model
The Standard Model of particle physics is amazingly successful, yet it leaves many basic questions unanswered. From bizarre, unexplained parameters such as the cosmological constant, Higgs mass, or neutron electric dipole moment to the lack of explanation for observed phenomena such as dark matter and baryogenesis, there is strong evidence that the Standard Model must be extended. At SITP we have focused on finding solutions to these open problems to discover what these hints tell us about the underlying laws of physics.
Video Briefs
Dark matter self interactions can leave distinctive signatures on the properties of satellite…
I construct a landscape of vacua of string theory and study the resulting ensemble of N-axion…
Related News
Crucial measurements were made at the Super-Kamiokande neutrino detector in Japan
Slowly gathering energy
Pascal Boegli/Getty
Kicking the world’s largest machine into overdrive is turning out to be harder than expected. Researchers at the Large Hadron Collider…
Last night the Operations team for the Large Hadron Collider (LHC) successfully circulated a beam at 6.5 teralectronvolts…
Related Events
The process of Big Bang Nucleosynthesis (BBN) is a crucial test of cosmology. In this talk, I will describe a new code for predicting the primordial elemental abundance due to BBN. This code takes advantage of JAX, a machine learning framework,…
Katherine Fraser
Measurements of the flavor structure of the Standard Model can be precise probes of physics beyond it. In this talk, we describe two implications of various flavor physics measurements. First, we discuss the use of Froggatt-Nielsen (FN) models…
Dark matter can be captured in stars and planets after scattering and losing sufficient energy to become gravitationally bound. I will discuss a new framework to describe what happens when dark matter is captured by these objects, and demonstrate…
The baryon sector of the present universe is almost entirely matter and no antimatter. High energy astrophysical events can only produce a tiny amount of antimatter, a minuscule fraction of which may form nuclear bound states. Given the…
Dark matter (DM) freeze-in through a light mediator is an appealing model with excellent detection prospects at current and future experiments. Light mediator freeze-in is UV-insensitive insofar as most DM is produced at late times, and thus the…
Fermi LAT has revealed an excess from the Galactic center that is compatible with a signal of dark matter annihilation, but other interpretations such as a population of millisecond pulsars have been found compelling. More recently, an excess…
A dark force, which is a necessary ingredient of self-interacting dark matter models, can lead to gravothermal collapse of dark matter in small mass halos. This talk will review the physics of gravothermal collapse and highlight new results…
SITP sign on 3rd floor of the Varian Physics Building
Heavy axions can arise in the context of Grand Unified theories where a confining dark gauge group unifies with the Standard Model (SM) gauge group. Depending on the strength of the axion coupling to the SM, heavy axion lifetimes can vary…
For several years, various experimental results on B meson decays show persistent discrepancies with respect to Standard Model expectations. Discrepancies are observed in branching ratios, angular distributions, and lepton flavor universality…