Theory

Bestselling author and renowned scientist Lisa Randall to deliver two public lectures

http://yfile.news.yorku.ca/2015/12/07/bestselling-author-and-renowned-scientist-lisa-randall-to-deliver-two-public-lectures/

Multi-boson spectrum of the SU(2)-Higgs model

Lattice simulations are used to compute the spectrum of energy levels for all angular momentum and parity quantum numbers in the SU(2)-Higgs model, with parameters chosen to match experimental data from the Higgs-W boson sector of the standard model. Creation operators are constructed for all lattice irreducible representations, and a correlation matrix is formed from […]

Composite Goldstone Dark Matter: Experimental Predictions from the Lattice

We study, via first principles lattice simulations, the nonperturbative dynamics of SU(2) gauge theory with two fundamental Dirac flavors. The model can be used simultaneously as a template for composite Goldstone boson dark matter and for breaking the electroweak symmetry dynamically. We compute the form factor, allowing us to estimate the associated electromagnetic charge radius. […]

Non-Standard Neutrino Interactions at Colliders

Many extensions of the Standard Model lead to non-standard neutrino interactions (NSI), which can affect the interpretation of current and future neutrino data. We explore an alternative approach to the study of these dimension eight four fermion interactions (of coefficient 4ϵGF/2‾√), by bringing into play collider data. read more ...

Physics and Astronomy partners with the Perimeter Institute for Theoretical Physics

York University and the Perimeter Institute for Theoretical Physics in Waterloo have recently forged a new partnership with their first joint hire, Dr. Matthew Johnson. The Perimeter Institute is one of the premier research centres for theoretical physics in the world, with focus in Cosmology & Gravitation, String Theory, Quantum Gravity, Quantum Foundations, Quantum Information, […]

Scientists at CERN atom smasher confirm York U physicist’s theories - Toronto Star

Randy Lewis was happy to hear the news, but he was nowhere near surprised. He expected Tuesday’s discovery of two new subatomic particles since he predicted their existence five years ago.“It’s certainly a very nice feeling,” the York University physicist told the Star.“Finding these two shows our experiments, which are very challenging, are being done […]

Seven Canadians Thinking Big in 2014 - Toronto Star

The Toronto Star names York Physics professor Randy Lewis as one of seven Canadians thinking big in 2014: http://www.thestar.com/news/world/2014/12/22/seven_canadians_thinking_big_in_2014.html

Matthew Johnson is co-recipient of third prize in 2014 Buchalter Cosmology Prize Competition

First Annual Buchalter Cosmology Prize Recognizes Innovative Ideas and Discoveries Seattle, WA – January 6, 2015 (9:20 AM PST) – The winners of the 2014 Buchalter Cosmology Prize were announced today at the 225th meeting of the American Astronomical Society in Seattle, Washington. The annual prize, created by Dr. Ari Buchalter in 2014, seeks to […]