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
A Path to Detecting Self-Interacting Dark Matter using Astrophysical Sub-Structure
Dark matter self interactions can leave distinctive signatures on the properties of satellite…
PQ Axiverse
I construct a landscape of vacua of string theory and study the resulting ensemble of N-axion…
Related News
In this episode of No Reason to Get Excited (NRTGE), Dr. Aaron Winkler talks with Stanford Physicist Peter Graham about the strange…
In his talk at the Perimeter Institute for Theoretical Physics, Savas Dimopoulos explores the emergence of nimble, small-scale science…
Dr. Racco's research during his SITP postdoctoral appointment has been awarded the Third Prize of the 2023 Buchalter Cosmology Prize.
If the electron’s charge wasn’t perfectly round, it could reveal the existence of hidden particles. A new measurement approaches…
Peter Graham is interested in discovering the fundamental laws of nature that lie beyond the known standard model. He received an A.B./A…
Image credit: L.A. Cicero
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 matter power spectrum on small scales (< 1 Mpc) is very weakly constrained so far. While inflation predicts a nearly scale-invariant primordial power spectrum down to very small scales, many new physics scenarios can lead to significantly…
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…
In this talk I first present a minimal composite dark matter model, based on a SU(Nd) dark sector with nf dark quarks and a heavy t-channel mediator. For nf≥4, the dark flavor symmetry guarantees the stability of a subset of the dark pions, which…
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…
Dark Matter (DM) remains mysterious. Despite decades of experimental and theoretical efforts, its microscopic identity is still unknown to us. In this talk, I will walk you through how a variety of celestial objects can be utilised as powerful DM…
The Cosmic Neutrino Background (CnuB) is the oldest relic population of Standard Model particles in the Universe, carrying information from roughly one second after the Big Bang. Its detection would mark a major milestone for both cosmology…
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…