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

Takaaki Kajita and Arthur McDonald led two teams which made key observations of the particles inside big underground instruments 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

Abstract: One of the strongest predictions of the standard cold dark matter paradigm is the hierarchy of structure down to Earth-mass scales. However, individual self-bound clumps of dark matter--"halos"--are difficult to detect directly.…

The dark photon is a massive hypothetical particle that interacts with the Standard Model by kinetically mixing with the visible photon.  Due to the similarities with the electromagnetic signals generated by axions, several bounds on dark…

We study the solar emission of light dark sector particles that self-interact strongly enough to self-thermalize. The resulting outflow behaves like a fluid which accelerates under its own thermal pressure to highly relativistic bulk velocities…

Millicharge particles with charge just evading accelerator bounds, possess charge large enough to accumulate on earth and cause large build-up over the age of the earth. This seminar, a sequel to a fall 2020 talk, introduces a new idea that sets…

The near equality of the dark matter and baryon energy densities is a remarkable coincidence, especially when one realizes that the baryon mass is exponentially sensitive to UV parameters in the form of dimensional transmutations. We explore a…

Theoretically well motivated models of dark matter such as inelastic dark matter (including the last surviving electroweak WIMP, the pseudo-Dirac Higgsino) and strongly interacting dark matter (Dirac Gluino bound states) possess…

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,…

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…