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…
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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 quantum chromodynamics axion is a well motivated new physics candidate that can explain the strong-CP problem related to the neutron electric dipole moment in addition to the dark matter (DM) in our Universe. However, if the axion is…
The classical equations of motion of a quantum field theory are obtained by minimizing an action. When we apply this procedure to a gauge theory, there is an interesting issue. The variation of the classical action along a gauge direction is zero…
This colloquium will be given by Nobel laureate Professor Robert Laughlin of the Stanford Physics Department.
Professor Laughlin's abstract:
I invoke physical principles to address the question of how living things might…
When DM bosons have an ultra-light mass, they can act as a classical, coherent field. In many cases, and specifically in some ALP models, this field has magnetic properties, and it can therefore be measured by quantum magnetometers. The Noble and…
The exchange of a pair of neutrinos can mediate a long-range force. This "neutrino force" is a unique quantum force predicted by the Standard Model; it is also sensitive to the nature of the neutrino mass. Yet, this force is too weak to be…
SITP sign on 3rd floor of the Varian Physics Building
In this talk I explore the physics potential of forward muon detection at muon colliders for probing neutral effective vector boson production across various kinematic regimes. Vectors with relatively low energy produce the Higgs boson…
It is difficult to construct a post-inflation QCD axion model that solves the axion quality problem (and hence the Strong CP problem) without introducing a cosmological disaster. In a post-inflation axion model, the axion field value is…
I will explain how we can search for light Dark Matter by detecting small amounts of phonons in specific crystals. To calculate the scattering rates, we must use methods from computational condensed matter physics within the context of particle…
A self-interacting dark matter (SIDM) halo begins to thermalize once its age is comparable to the (inverse of the) self-interaction rate. Such thermalized self-gravitating systems are know to be unstable due to the so-called "Gravo-Thermal…