TRIUMF Talks

New Physics from the Sky: Cosmic Rays, Gamma Rays and the Hunt for Dark Matter

Speaker: 
Stefano Profumo (UC Santa Cruz)
Event Date and Time: 
Thu, 2014-02-06 14:00 - 15:00
Location: 
TRIUMF
Local Contact: 
David Morrissey

Can we learn about New Physics with astronomical and astro-particle data? Understanding how this is possible is key to unraveling one of the most pressing mysteries at the interface of cosmology and particle physics: the fundamental nature of dark matter. I will discuss some of the recent puzzling findings in cosmic-ray electron-positron data and in gamma-ray observations that might be related to dark matter.

The neutron electric dipole moment experiment at TUM

Speaker: 
Peter Fierlinger (TU Munich)
Event Date and Time: 
Thu, 2014-01-30 14:00 - 15:00
Location: 
TRIUMF
Local Contact: 
Ruediger Picker
Intended Audience: 
Graduate

Since the 1950's people search for electric dipole moments (EDM) of fundamental systems, an unambiguous manifestation of parity (P) and time reversal symmetry (T) violation. Assuming the conservation of CPT, T violation in a fundamental system also means CP violation. This has only been observed in very few systems in the Standard Model of particle physics (SM) and is not sufficient to describe the matter-antimatter asymmetry in the Universe.

Description of continuum states in three-cluster systems

Speaker: 
Carolina Romero-Redondo (TRIUMF)
Event Date and Time: 
Thu, 2014-01-23 14:00 - 15:00
Location: 
TRIUMF
Local Contact: 
David Morrissey

Three-body systems appear in a wide range of physical problems. Continuum states of such systems are particularly difficult to describe and can play a crucial role, for example, in important fusion reactions or the structure of two-neutron halo nuclei . Big efforts have been made in order to better characterize them. In this talk we will introduce two integral relations, derived from Kohn variational principle, which permit us to obtain the S-matrix of a given reaction from the internal part of the wave functions.

Recent advances in PET tracer and technology development at the University of Geneva

Speaker: 
Yann Seimbille (University of Geneva)
Event Date and Time: 
Thu, 2013-11-21 14:00 - 15:00
Location: 
TRIUMF Auditorium
Intended Audience: 
Graduate

The Majorana Neutrinoless Double Beta Decay Experiment

Speaker: 
Alan Poon (Lawrence Berkeley National Laboratory)
Event Date and Time: 
Tue, 2013-09-10 14:00 - 15:00
Location: 
TRIUMF Auditorium
Intended Audience: 
Graduate

The Majorana collaboration will search for neutrinoless double beta decay in 76Ge by fielding an array of high-purity germanium detectors. The Majorana Demonstrator is a R&D project that will deploy 40 kg of detectors, of which 30 kg will be enriched to 86% in 76Ge, at the Sanford Underground Research Facility. The exceptionally low-noise p-type point-contact (PPC) detectors chosen for the Demonstrator will also enable a broad physics program beyond neutrinoless double beta decay searches, including searches for Weakly Interacting Massive Particles (WIMPs) and solar axions.

Search for Natural SUSY with ATLAS at the LHC

Speaker: 
Anadi Canepa (TRIUMF)
Event Date and Time: 
Thu, 2013-06-13 14:00 - 15:00
Location: 
TRIUMF Auditorium
Intended Audience: 
Graduate

In view of the recent discovery of a Higgs boson at the LHC, the search for new physics stabilizing its mass has become compelling. Supersymmetry offers a solution to the hierarchy problem and the naturalness of a Higgs boson mass near 125 GeV provides a criterion towards defining a minimal spectrum for "natural SUSY". The talk will present results from relevant searches using data recorded by the ATLAS detector at both 7 and 8 TeV center of mass-energy.

“The Waters I am Entering No One yet Has Crossed”: Alexander Friedman and the Origins of Modern Cosmology

Speaker: 
Ari Belenkiy (Simon Fraser University)
Event Date and Time: 
Thu, 2013-05-09 14:00 - 15:00
Location: 
TRIUMF Auditorium
Local Contact: 
Barry Davids (TRIUMF)
Intended Audience: 
Undergraduate

 

The Proton Radius Puzzle: A Challenge to all of us

Speaker: 
Gerald Miller (University of Washington, Seattle)
Event Date and Time: 
Thu, 2013-01-31 14:00 - 15:00
Location: 
TRIUMF Auditorium
Intended Audience: 
Graduate

The extremely precise extraction of the proton radius by Pohl et al. from the measured energy difference between the 2P and 2S states of muonic hydrogen disagrees significantly with that extracted from electronic hydrogen or elastic electron-proton scattering. This is the proton radius puzzle. The origins of the puzzle and the reasons for believing it to be very significant are explained. Various possible solutions of the puzzle are identified, and the future work needed to resolve the puzzle is discussed.

Observation of Zitterbewegung in a degenerate quantum gas

Speaker: 
I. B. Spielman (University of Maryland and National Institute of Standards and Technology)
Event Date and Time: 
Thu, 2013-01-24 14:00 - 15:00
Location: 
TRIUMF Auditorium
Intended Audience: 
Graduate

 

Here I present our experimental work on Bose-Einstein condensates, systems of ultra-cold charge neutral atoms at a temperature of about 100 nano-Kelvin: one billion times colder than room temperature. These condensates – quantum gases – are nearly perfect quantum mechanical systems, and here we demonstrate a technique by which these charge neutral particles have artificial spin-orbit coupling, of a form more well known in material systems.

Neutrinos from stored muon beams: an incremental approach to the Neutrino Factory

Speaker: 
Ken Long (Imperial College, London)
Event Date and Time: 
Wed, 2013-02-20 14:00 - 15:00
Location: 
TRIUMF Auditorium
Intended Audience: 
Graduate

The study of the neutrino is the study of physics beyond the Standard Model. Now that theta13 has been measured, the focus of the long-baseline neutrino-oscillation programme is to determine the mass hierarchy and to search for leptonic CP-invariance violation. In parallel, some anomalies in short- baseline oscillations can be interpreted as hints for sterile neutrinos.

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