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…
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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
Credit: Harrison Truong
Related Events
Thermal relic dark matter below ∼10 GeV is excluded by cosmic microwave background data if its annihilation to visible particles is unsuppressed near the epoch of recombination. Usual model-building measures to avoid this bound involve…
Positivity bounds on the S-matrix provide powerful constraints on effective field theories in flat space. Extending these results to cosmological backgrounds requires an understanding of the analytic structure of amplitudes in theories with…
Fifth force and equivalence principle tests search for new interactions by precisely measuring forces between macroscopic collections of atoms and molecules and their properties under free fall. In contrast, the early Universe plasma probes these…
Abstract: Many puzzles of fundamental physics indicate the existence of new particles that interact feebly with ordinary matter, which makes them appear “dark” to us. Quantum sensors, given their low noise level, are promising devices to…
Gravitational waves with frequencies below 1 nHz are notoriously difficult to detect and fall below the typical cutoff frequency for conventional pulsar timing analyses. In this talk, I will present a new means of probing this regime through the…
The anomalous magnetic moment of the muon (amu) serves as a precise test of the quantum nature of the Standard Model (SM) and its extensions. To identify beyond-SM physics, one must subtract the SM contributions, particularly the non-perturbative…
With the direct detection of gravitational waves (GWs) from LIGO in 2016, and recent evidence from the NANOGrav collabortion for a stochastic GW background, GW astronomy is becoming an important tool for understanding the universe. Recently it…
It is important to confront the most pessimistic scenario for dark matter, in which it interacts with ordinary matter only through gravity. Even in this case, both the particle physics of dark matter and aspects of our cosmological history can be…
Is string theory unique? String amplitudes famously accomplish several extraordinary mathematical feats in order to UV-complete gravity, including exhibiting an infinite tower of spinning states and dual resonance. In this talk, I will show that…