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 […]

# All posts by benitez

## Jamie Hudspith

QCD lattice group.

## 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, […]

## 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 ...

## 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. […]

## 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 […]

## T2K submits paper that conclusively shows muon neutrinos transform to electron neutrinos

The T2K experiment has submitted a paper to Physical Review Letters, reporting the definitive observation of electron neutrino appearance in a high-purity muon neutrino beam that travels 295 km, from the J-PARC accelerator complex to the Super-Kamiokande underground neutrino detector. read more ...

## T2K Beam Group wins 2013 Suwa Prize

The T2K Neutrino Beam group was awarded the 2013 Suwa Prize by the FAS (Foundation for High Energy Accelerator Science), for their contribution to the discovery of electron neutrino appearance by creating and operating the highest intensity neutrino beam facility. read more...

## Englert and Higgs get the Nobel

On 8 October, the 2013 Nobel Prize in physics was awarded to Professors François Englert and Peter Higgs "for the theoretical discovery of a mechanism that contributes to our understanding of the origin of mass of subatomic particles, and which recently was confirmed through the discovery of the predicted fundamental particle, by the ATLAS andCMS experiments at CERN’s Large Hadron […]

## Higgs Into Fermions

The ATLAS experiment released preliminary results on 26 Nov 2013 that show evidence, with a significance of 4.1 standard deviations that the Higgs boson decays to two taus, which are fermions. This is exciting news. But what makes this measurement important? read more...