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2023-02-16, 7:00 p.m.
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Dr David Curtin (University of Toronto)2023-02-16, 7:15 p.m.
Simple hidden sector theories can give rise to interacting dark matter involving multiple particle species and long-range interactions, such as atomic dark matter. These scenarios are highly plausible in their own right, but can be particularly motivated by modern solutions to the Hierarchy Problem such as the Twin Higgs. These dark matter models feature dissipative dynamics and bound state...
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Joseph Mitchell Kelly (University of Alberta)2023-02-16, 7:45 p.m.
Several models that provide solutions to the Standard Model's open problems allow for the possibility of long lived particles (LLPs) with lifetimes, in some cases, in excess of $10^{3}$ seconds. It is proposed that charged LLPs produced at the Large Hadron Collider could interact with the ATLAS detector, eventually coming to rest and decaying. Other LLPs, such as neutral particles, may also...
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Ho Chun Lau (University of Alberta)2023-02-16, 8:00 p.m.
We analyzed diphoton($e^+e^-$) and dielectron($\gamma\gamma$) invariant mass spectrums in ATLAS to search for periodic resonance signals which are the decay products of clockwork gravitons predicted by the clockwork model. The clockwork model attempts to answer the hierarchy problem through a novel particle-generating mechanism. The name clockwork follows from the mechanics of obtaining a...
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Bardh Quni (Uni)2023-02-16, 8:15 p.m.
The discovery of neutrino oscillations provided evidence of lepton flavour vi- olation. In this work, we carry out the background simulations in the leptoquark framework. Leptoquarks are bosons which carry lepton and baryon numbers, coupling leptons to quarks and mediating charged lepton flavour violation pro- cesses at tree-level. The goal of this work is to study charged lepton flavour...
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Ms Fatemeh Gorgannejad (University of Manitoba)2023-02-16, 8:30 p.m.
Distinguishing between signal events and background events is the main issue in the integrating measurments of nuclear physics and particle physics experiments. Signal corrections can be accomplished either theoretically or experimentally. In the experimental approaches, a set of detectors called background detectors is implemented. In background detectors, the majority of particles generating...
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Akshaya Vijay (University Of Manitoba)2023-02-16, 8:45 p.m.
The US-based future Electron-Ion Collider is a novel tool to address some of the unexplained physics of nucleons, including how their constituents contribute to their properties like spin, mass, etc., by colliding highly polarized electron beams with polarized beams of protons or ions. The high-energy interactions between the electrons and protons help in understanding the internal structure...
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2023-02-17, 8:30 a.m.
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Katelin Schutz (McGill University)2023-02-17, 8:45 a.m.
I will give an overview of pseudo-Dirac dark matter, a scenario where a small Majorana mass splits charged Dirac dark matter into two nearly degenerate states. A longtime favourite of model-builders, this dark matter candidate has a rich phenomenology that still has yet to be fully characterized. I will discuss a few mechanisms for producing this kind of dark matter in the early universe, and...
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Shafakat Arifeen (University of Regina)2023-02-17, 9:15 a.m.
There is strong evidence for the existence of Dark Matter. One possible form of Dark Matter is strongly self-interacting Dark Matter, or Strongly Interacting Massive Particles (SIMP), modelled after Quantum Chromodynamics (QCD). It should also be noted that, to date, no direct detection of any kind of dark matter has been made. Direct detection of dark matter at accelerators is a high priority...
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Nicholas Swidinsky (Queen's University)2023-02-17, 9:30 a.m.
Many particle and rare-event search detectors use liquid scintillators as the detection method. A popular candidate for scintillation fluids are noble elements such as Liquid Argon (LAr). LAr detectors typically store their scintillators inside an acrylic vessel, which can be coated with various materials. A common coating is 1,1,4,4-tetraphenyl-1,3-butadiene (TPB) which is a wavelength...
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Minya Bai (Queen's University)2023-02-17, 9:45 a.m.
The PICO collaboration aims to use superheated bubble chambers for the direct detection of dark matter, particularly in the spin-dependent WIMP-proton regime. PICO-40L is the current generation dark matter detector that is currently in the final stages of construction 2km underground at SNOLAB. It will be anticipating first commissioning results and early physics results early next year. The...
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Hayden Meadows (Queen's University)2023-02-17, 10:00 a.m.
The NEWS-G experiment searches for low-mass dark matter candidates at SNOLAB in Sudbury, Ontario. The direct dark matter search is performed using a spherical proportional counter (SPC) filled with light atomic mass gases. NEWS-G3 is a proposed experiment that employs the same technology as the NEWS-G experiment to search for coherent elastic neutrino-nucleus scattering (CEνNS) at a nuclear...
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Dr Stephen Kay (University of Regina)2023-02-17, 10:45 a.m.
Many important questions in Quantum Chromodynamics (QCD) remain unanswered, despite decades of investigation. For example, we cannot adequately explain how the fundamental properties (mass, spin) of objects such as the proton and neutron emerge from their constituent quarks and gluons. Interactions and structure in nuclear matter are intricately connected, the observed properties of composite...
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Love Preet (University of Regina)2023-02-17, 11:00 a.m.
The Electron-Ion Collider (EIC) is a new US$2 billion high-luminosity accelerator that is expected to be operational at Brookhaven National Laboratory, USA at the beginning of the next decade. One of the main goals of the EIC is to understand the origin of hadronic mass, this is the majority of visible mass (>99%) in the universe. From the little that we understand, we know that the mass of...
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Ms Shefali Shefali (University of Manitoba)2023-02-17, 11:15 a.m.
The Measurement Of a Lepton Lepton Electroweak Reaction (MOLLER) experiment anticipates new dynamics beyond the standard model. The measurements are acquired by the scattering of longitudinally polarized electrons off the unpolarized electrons using a set of detectors in Hall A at Thomas Jefferson National Accelerator Facility (JLab) in Newport News, Virginia USA. In the present...
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Alicia Postuma2023-02-17, 11:30 a.m.
The KaonLT/PionLT Collaboration probes hadron structure by measuring deep exclusive meson production reactions at Jefferson Lab. A set of high momentum, high resolution spectrometers in Hall C allow for precision measurements of cross sections at different kinematics, from which form factors and other observables can be extracted. One possible measurement from these reactions is the beam...
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Sneh Modi (University of Alberta)2023-02-17, 11:45 a.m.
In perturbative QCD, processes involving quark scattering provide the simplest way of studying non-Abelian scattering amplitudes. To that end, in this talk I will discuss our calculation for the Form Factor of the Higgs boson production via light quark mediated Gluon Fusion process in the high energy/small quark mass limit, where the leading contribution comes in the form of large double...
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Stjepan Oresic (University of Regina)2023-02-17, 12:00 p.m.
Deep Inelastic Scattering (DIS) is described by an exchange of virtual photons or, at high energies, the $Z^0$. The distinctive characteristic of DIS in contrast to many processes (such as $pp$ at the LHC or $pA$ at the RHIC) is that the kinematics are precisely computable from the leptonic (and hadronic) final state at all orders. DIS reconstruction has a strong dependence on the collision...
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Jodi Cooley (SMU)2023-02-17, 7:00 p.m.
SNOLAB is an epicenter of global astroparticle physics and underground science discovery and research. As one of the deepest, cleanest underground laboratory in the world, with first-rate scientists and staff, it is a location of choice for cutting edge experiments. In this talk I will highlight some of the exciting research conducted at SNOLAB and discuss potential future research directions.
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Tyler Martin (University of Toronto)2023-02-17, 7:30 p.m.
The SuperCDMS SNOLAB experiment is a next-generation direct detection dark matter search experiment with an anticipated world-leading sensitivity to particles with masses $\leq 10 \text{ GeV/c}^2$. The experiment is currently under construction at SNOLAB in Sudbury, Ontario. The unique facility, located 2 km underground, offers abundant shielding against cosmic rays. The SuperCDMS experiment...
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Musaab Al-Bakry (TRIUMF/UBC)2023-02-17, 7:45 p.m.
As part of the Dark Matter search by SuperCDMS at SNOLAB, HVeV detectors are used to provide a mechanism of detecting eV-scale energies. HVeV detectors are typically made of high-purity silicon operating with a high bias voltage at sub-K temperatures. An excitation to the silicon generates electron/hole pairs that drift due to the bias voltage. The phonons produced by the drift are expected to...
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Jean-Marie Coquillat (Queen's University)2023-02-17, 8:00 p.m.
In the Fall of 2019, the NEWS-G experiment used its latest detector, a 140 cm diameter Spherical Proportional Counter (SPC) to search for low-mass dark matter at the Laboratoire souterrain de Modane (LSM), in France. Having the sphere filled with pure methane, hydrogen was used as the target to produce new limits on the spin-dependent cross-section around masses of 1 GeV.
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This talk will... -
Noah Rowe (Queen's University)2023-02-17, 8:15 p.m.
In this talk I will present preliminary results regarding the application of machine learning techniques for noise removal on signals from spherical proportional counters (SPCs) with the NEWS-G experiment. In SPC detectors, a primary ionization, created by a particle interacting with the gas, drifts towards a central anode. When ions approach the anode, the electric field becomes strong enough...
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Derek Fujimoto (TRIUMF)2023-02-17, 9:00 p.m.
The TUCAN collaboration aims to make a measurement of the neutron electric dipole moment (nEDM) with a precision of 10-27 e cm, an order of magnitude improvement over the current best limit. A non-zero nEDM would be explicit evidence for CP violation in the Standard Model. This, in turn, contributes to solving the longstanding baryon asymmetry problem. Such a measurement requires an...
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Emma Klemets (TRIUMF)2023-02-17, 9:15 p.m.
The TUCAN EDM experiment at TRIUMF will use polarized, ultracold neutrons (UCNs) to search for the neutron electric dipole moment (nEDM). The discovery of a permanent nEDM would indicate the violation of time reversal symmetry, and thus charge-parity symmetry (given the CPT theorem). This would point to physics beyond the Standard Model of Particle Physics. To achieve the projected sensitivity...
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Louis Croquette (McGill University)2023-02-17, 9:30 p.m.
The Multi-Ion Reflection Apparatus for Collinear Laser Spectroscopy (MIRACLS) is a novel approach in performing high-resolution collinear laser spectroscopy (CLS) in a multi-reflection time-of-flight (MR-ToF) device. By trapping a 30-keV ion beam in-between the MR-ToF’s electrostatic mirrors and revolving it around a few thousand times through an optical detection region (ODR), significant...
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Jenna Chisholm (The University of British Columbia)2023-02-17, 10:00 p.m.
As the heaviest known fundamental particle, the top quark plays a special role in many theories of new physics beyond the Standard Model. Reconstruction of top anti-top pair production to the best possible resolution is therefore crucial to enhancing our sensitivity to Beyond Standard Model effects in precision measurements and searches at the Large Hadron Collider (LHC), from improved mass...
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2023-02-18, 8:30 a.m.
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Chukman So (TRIUMF)2023-02-18, 8:45 a.m.
The symmetry between matter and antimatter is one of the great unresolved questions in fundamental physics, as it underscores the discrepancies between the Standard Model and cosmological observations. Many experiments have been performed to compare the properties of antimatter to matter at great precision. However, gravitation has so far eluded these efforts due to the difficulty measuring...
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Pooja Woosaree (University of Calgary)2023-02-18, 9:15 a.m.
ALPHA-g has completed a successful run in 2022 in the pursuit of measuring the gravitational mass of antihydrogen. This apparatus was designed to test whether antimatter follows Einstein’s Weak Equivalence Principle (WEP), where the acceleration due to gravity that a body experiences is independent of its structure or composition. A measurement of the gravitational mass of antimatter has never...
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Gareth Smith (UBC/TRIUMF)2023-02-18, 9:30 a.m.
Antimatter lies at the heart of many of the universe’s unanswered questions, but direct study of antimatter structures is technically difficult. ALPHA-g promises the first direct free-fall observation of the Earth’s gravitational force acting on anti-atoms, by precisely recording the annihilation positions of anti-hydrogen atoms after a controlled release from a magnetic trap. Reconstructing...
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Adam Powell (University of Calgary)2023-02-18, 9:45 a.m.
The Antihydrogen Laser Physics Apparatus (ALPHA) collaboration uses low energy antiprotons to produce, trap, and study the bound state of an antiproton and positron, antihydrogen. Hydrogen has been studied extensively through history and has many physical properties known to a high precision experimentally and theoretically. Therefore, comparisons between hydrogen and its antimatter equivalent...
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Muhammad Mubasher (University of Alberta)2023-02-18, 10:00 a.m.
It has been known for many years that an electron and its antiparticle, the positron, may together form a metastable hydrogen-like atom, known as positronium or Ps. In 1946, Wheeler speculated that two Ps atoms may combine to form the positronium molecule (Ps$_2$) stable with respect to auto-dissociation. In 2007, the existence of Ps$_2$ was confirmed experimentally by David Cassidy and? Allen...
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Robin Coleman (University of Guelph)2023-02-18, 10:45 a.m.
Nuclei away from the line of stability have been found to demonstrate behavior that is inconsistent with the traditional magic numbers of the spherical shell model. This has led to the concept of the evolution of nuclear shell structure in exotic nuclei, and the neutron-rich calcium isotopes are a key testing ground of these theories; there have been conflicting results from various...
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tammy zidar (university of guelph)2023-02-18, 11:00 a.m.
The term ‘island of inversion’ is used to refer to a region of the nuclear landscape in which deformed intruder configurations dominate nuclear ground states over the spherical configurations naively expected from the shell model. Theoretical models of the inversion mechanism can be tested through detailed studies of the nuclear structure of transitional nuclei, in which the normal and...
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Frank (Tongan) Wu (Simon Fraser University)2023-02-18, 11:15 a.m.
Clustering in nuclei provides an alternative description to their nuclear structure in addition to the Nuclear Shell Model. Although alpha ($^4$He nucleus) clusters are widely accepted to be essential to the understanding of the structure of light nuclei, such as the Hoyle state in $^{12}$C, it was experimentally observed in heavy nuclei only recently in $^{212}$Po. The observation showed that...
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Heinz Asch (Simon Fraser University)2023-02-18, 11:30 a.m.
Nuclear theories often operate under the assumption that the strong nuclear force is charge independent. As a result, it is expected that mirror nuclei, which are identical under the exchange of total number of protons and neutrons, will have similar nuclear structures when Coulombic contributions are considered. Under the assumption of charge dependence, protons and neutrons are grouped...
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Matthew Martin (Simon Fraser University)2023-02-18, 11:45 a.m.
Neutron rich Mg isotopes far from stability belong to a region known as the island of inversion where the single particle description of the shell model breaks down, and the predicted configuration of the nuclear states becomes inverted. Nuclei in this region also exhibit collective behaviour in which multiple particle interactions play a significant role in nuclear matrix elements. These...
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Dominic Annen (Simon Fraser University)2023-02-18, 12:00 p.m.
The nucleus, made up of protons and neutrons, exhibits a shell-like structure consisting of orbitals described by quantum mechanics. This has been demonstrated by extensive experimental observables, which reveal that nuclei possessing specific "magic numbers" of neutrons or protons exhibit particular characteristics well described in the nuclear shell model. The tin isotopes, with a closed...
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Xiaoyue Li (TRIUMF)2023-02-18, 2:15 p.m.
Ever since the first measurements were made of these ghostly particles, neutrinos have been a constant fascination for physicists due to their unusual properties. One such peculiarity is that neutrinos can seemingly change flavours as they propagate — a phenomenon known as neutrino oscillation. The oscillation probabilities are determined by a set of fundamental parameters in the Standard...
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Soud Al Kharusi (McGill University)2023-02-18, 2:45 p.m.
The nEXO experiment is a proposed neutrinoless double beta decay (0$\nu\beta\beta$) search in the isotope $^{136}$Xe. 0$\nu\beta\beta$ is a lepton number violating process, and a positive observation of this decay mode in any isotope would be a direct observation of physics beyond the standard model. Anticipated to be located 2 km underground at SNOLAB, nEXO aims to discover the Majorana...
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Ms Bindiya Chana (Carleton University)2023-02-18, 3:00 p.m.
Silicon photomultipliers (SiPMs) are an excellent solid-state photon detection technology that is becoming increasingly popular in the field of particle and medical physics. The features of SiPMs that make them an ideal candidate for photon detection are their compact size, lightweight, high gain, low operating voltage, low dark noise, and insensitivity to the magnetic field. The nEXO...
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Jasmine Corning (Queen's University)2023-02-18, 3:15 p.m.
The SNO+ experiment is a multi-phase neutrino detector located at the SNOLAB underground physics laboratory in Sudbury, Ontario, Canada. Currently, the 12 m diameter acrylic vessel (AV) is filled with 780 tonnes of the liquid scintillator, linear alkylbenzene (LAB), doped with the fluor 2,5-diphenyloxazole (PPO) to a concentration of 2.2 g/L. The detector is viewed by approximately 9400...
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Maria Liubarska (University of Alberta)2023-02-18, 3:30 p.m.
We present results of an analysis studying neutrino-nucleon interactions in the energy range between ~100 GeV - 1 TeV by measuring the inelasticity of these interactions with IceCube DeepCore. IceCube is a Cherenkov neutrino telescope consisting of an optical sensor array placed in ice 1.5 - 2.5 km below the geographic South Pole and covering a volume of roughly 1 km3. DeepCore is a densely...
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Guy Leckenby (TRIUMF)2023-02-18, 4:15 p.m.
Bound-state $\beta$-decay ($\beta_b^-$-decay) is a radically transformative decay mode that can change the stability of a nucleus and generate temperature- and density-dependent decay rates. In this decay mode the $\beta$-electron is created directly in a bound atomic orbital of the daughter nucleus instead of being emitted into the continuum, so the decay channel is only significant in almost...
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Zachary Hockenbery (McGill)2023-02-18, 4:30 p.m.
Precision mass measurements of neutron-deficient $fp$-shell nuclei near N=Z are of interest to the nuclear physics community because they are relevant to several research areas. First is that these nuclei are situated along the reaction path of the rapid proton capture process (rp-process) which powers type I X-ray bursts. Precision mass values are required for the calculation of astrophysical...
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Georgios Palkanoglou (University of Guelph)2023-02-18, 4:45 p.m.
Nuclear pairing, i.e., the tendency of nucleons to form pairs, has important consequences to the physics of neutron star crusts and heavy nuclei. The usual pairing found in nuclei happens between identical nucleons and in singlet states, while recent investigations have shown that certain heavy nuclei might exhibit triplet and mixed-spin pairing correlations in their ground states. In this...
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Mr Bruno Ferrazzi (University of Regina)2023-02-18, 5:00 p.m.
The precision measurements of neutrino oscillation parameters and neutrino-nucleus scattering and also unprecedented sensitivity to physics beyond the Standard Model are the goals of the next generation of long-baseline neutrino experiments. To achieve this high precision and sensitivity, these experiments need a reduction of the uncertainties in neutrino flux calculations. New measurements of...
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Eric Gyabeng Fuakye (University of Regina)2023-02-18, 5:15 p.m.
A high-precision half-life measurement for the radioactive isotope, 26Na, was performed at TRIUMF’s Isotope Separator and Accelerator (ISAC) facility. This is the first experimental test of the high-efficiency Gamma-Ray Infrastructure for Fundamental Investigations of Nuclei (GRIFFIN) spectrometer for performing high precision (± 0.05% or better) half-life measurements [1]. In this talk, I...
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nathan heinrich (Univeristy of Regina)2023-02-18, 5:30 p.m.
The development of the GPD formalism in the last 25 years is a groundbreaking advance in our understanding of the structure of the nucleon. Unifying the concepts of parton distributions and of hadronic form factors, they contain a wealth of new information about how quarks and gluons make up hadrons. For example, GPDs correlate different parton configurations in the hadron at the quantum...
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Samantha Buck (University of Guelph)2023-02-18, 5:45 p.m.
One of the foremost goals of nuclear physics is to provide an understanding of how nuclei are assembled from the basic constituent building blocks of protons and neutrons. Preceding studies have attempted to achieve this by observing the excitation's of nuclei under fine-tuned experimental conditions with the most advanced detectors available on the planet. Nevertheless, this initiative...
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Dr Marcella Berg (University of Regina)2023-02-19, 8:30 a.m.
Neutrons are subatomic particles with no net electric charge, which means that they generally can penetrate deeper into matter than other subatomic particles. The interaction between neutrons and matter can be used to gather information about bulk characteristics of materials by evaluating the scattered neutrons. This opens a whole assortment of possible physics knowledge that can be acquired...
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Lilianna Hariasz (Queen's University)2023-02-19, 9:00 a.m.
Potassium-40 ($^{40}$K) is a naturally-occurring, radioactive isotope impacting understanding of nuclear structure, geological ages spanning timescales as old as the Earth, and rare-event searches including those for dark matter and neutrinoless double-beta decay. The long-lived $^{40}$K radionuclide undergoes electron capture decays to either the excited or ground state of its Ar daughter, of...
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Beau Greaves (University of Guelph)2023-02-19, 9:15 a.m.
Recent neutron-star merger observations have provided r-process abundance constraints, which has led to significant attention towards additional neutron-capture processes such as the i-process and n-process. Working between the rates and environmental neutron densities of the r-process and s-process, their reaction pathways and abundance contributions are not yet fully characterized. Operating...
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Ryan Curry (University of Guelph)2023-02-19, 9:30 a.m.
One of the challenges faced while studying the nuclear many-body problem is the nature of the nucleon-nucleon interaction. The full details are described by the theory of Quantum Chromodynamics (QCD), but for realistic calculations approximate models must be used. Historically these have been phenomenological potentials fit to experimental data. However, in recent decades, models for the...
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Zarin Tasnim Ahmed (University of Guelph)2023-02-19, 9:45 a.m.
As one moves away from stable isotopes and deeper into the neutron-rich region, the likelihood of β-delayed neutron (βn) emission decay increases. The ability to understand the neutron emission probabilities and the neutron energy spectrum can reveal highly sensitive detail of the nuclear structure that a conventional β-decay study using only γ-ray detection cannot. We propose to build the...
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Craig McRae (University of Manitoba)2023-02-19, 10:00 a.m.
The response of the proton to elastic scattering events has long been known to be described via two functions of the squared momentum transfer $Q^2$: the Sachs electric and magnetic form factors $G_E\left(Q^2\right)$ and $G_M\left(Q^2\right)$, respectively. To understand this elastic structure of the proton there are two main observables which constrain the form factors: cross section data...
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Matthew Smith (Carleton)2023-02-19, 10:30 a.m.
As a fundamental interaction of the Standard Model, the electroweak production of a W boson in association with two jets in proton-proton collisions is of particular interest due to its sensitivity to vector boson fusion, a topic of high interest at the Large Hadron Collider as it’s study can yield valuable information about the anomalous triple gauge couplings. By employing a machine learning...
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Yu-Ming Chen (Carleton University)2023-02-19, 10:45 a.m.
I will present a constraint on the sterile-neutrino dark matter through neutrino self-interaction inside a core-collapse supernova. The environment inside a core-collapse supernova has similar features as the early universe era where the sterile-neutrino dark matter is dominantly produced. I will start by showing how a massive scalar mediated neutrino self-interaction can affect the cooling...
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William Woodley (University of Alberta)2023-02-19, 11:00 a.m.
I present a new, open-source, pure Python program, MUTE (MUon inTensity codE) (A. Fedynitch, W. Woodley, M.-C. Piro 2022 ApJ 928 27). MUTE combines the state-of-the-art codes MCEq (Matrix Cascade Equation) and PROPOSAL (PRopagator with Optimal Precision and Optimised Speed for All Leptons) to compute cosmic ray cascades in the atmosphere and the propagation of muons through matter in separate...
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Xiang Li (University of Alberta)2023-02-19, 11:15 a.m.
Bubble chambers using fluorocarbons or liquid noble gases are promising technologies for detecting low-energy nuclear recoils from weakly interacting massive particles (WIMPs), a potential candidate for dark matter. In this study, we used molecular dynamics simulations to determine the energy threshold in superheated liquids and Monte Carlo simulations with SRIM to obtain the bubble nucleation...
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Pietro Spagnoletti (Simon Fraser University)
Situated at the low-energy tail of the Giant Dipole Resonance (GDR), which is described as an out-of-phase oscillation between protons (Z) and neutrons (N), neutron-rich nuclei exhibit a small resonance like structure of additional electric dipole strength which has been denoted as the Pygmy Dipole Resonance (PDR). The PDR is interpreted, in a geometric picture, as an out-of-phase oscillation...
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Metea Marr (Simon Fraser University)
The Higgs boson is a fundamental particle in the Standard Model of particle physics, but its properties are not well-constrained experimentally. This analysis aims to improve our understanding of the Higgs boson through measurements of the H $\rightarrow$ WW decay channel in gluon-gluon fusion (ggF) and vector boson fusion (VBF) production modes. The ggF channel is the dominant production...
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Konstantin Mastakov (University of Guelph)
Understanding the phenomenon of shape evolution in atomic nuclei has been one of the main quests in nuclear physics. While throughout the nuclear chart the evolution of a spherical ground-state shape into a deformed one is usually a gradual process, in the Zr isotopic chain an abrupt shape transition is observed at N=60. This dramatic onset of deformation in $^{100}$Zr was recently well...
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Chris Griffin (TRIUMF)
Nuclear data calculated by theoretical models play a large role in our understanding of the r-process due to the experimental difficulties in producing these very neutron-rich nuclei directly. In turn, experimental data are crucial in validating and constraining these models with the focus often on nuclear masses, half-lives and neutron emission probabilities. Nuclear structure also plays a...
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Dhruval Shah (University of Regina)
Naturally occurring explosive astrophysical events including x-ray bursts, supernovae, and neutron-star mergers are responsible for the synthesis of the majority of heavy elements in the universe. Short-lived rare isotopes, produced in the initial blast, will decay back to stability through $\beta$-decay and other modes of radioactivity. The properties of these exotic nuclei can be...
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Tianai Ye (Queen's University)
High-purity germanium (HPGe) detectors are used in rare event searches such as neutrinoless double-beta decay, dark matter, and other beyond Standard Model physics. An efficient signal denoising algorithm can help advance these searches by improving energy resolution and background rejection techniques and allowing for the identification of low-energy signal events.
We present a machine...
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Mr Behnam Ashrafkhani Limoudehi (University of Calgary)
Radon is a radioactive gas that arises from the radioactive decay of uranium and thorium minerals. It emerges from the ground and can enter homes, where it can decay and attach to dust particles, both of which can be inhaled. The alpha emissions from radon decay can cause DNA damage in lung tissue, increasing the risk of lung cancer [1,2]. Assessing radon exposure is important as it is the...
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Madeleine Berube (TRIUMF/University of Waterloo)
Nuclear structure properties of many isotopes in the neutron-rich region are still unknown. Detection systems that focus on this region are an important part of nuclear physics studies. At TRIUMF, the gamma-decay spectroscopy GRIFFIN facility, and its ancillary detectors, such as the neutron-tagging DESCANT detector, allows the study of many of these nuclei. From these studies, we can learn...
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JOSE TRUJILLO (UNIVERSITY OF CALGARY)
r-process nucleosynthesis is responsible for about half of the heavy elements observed in the universe, possibly happening in explosive environments like supernovas and neutron star mergers. The r-process outputs in the literature are not easy to replicate and vary across studies because of different nuclear mass models or initial conditions (seed nuclei); hence there is yet knowledge to be...
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Dr Neha Panchal (Postdoctoral Fellow)
The scattering of neutrons was observed in a table top experiment with an AmBe source. It is a crucial step towards quenching factor measurement in gases with a neutron beam for the NEWS-G experiment. Before conducting the upcoming in-beam experiments, it is important to do a systematic investigation to study the effects of different gas mixtures, pressures, sphere sizes, and ionization...
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Sirous Yousefnejad (Universit of Regina)
Aerogel threshold Cherenkov detectors are supposed to be used, in combination with time of flight detectors, as part of the particle identification system of Water Cherenkov Test Experiment (WCTE). In this work, the characteristics and design of these aerogel threshold Cherenkov detectors are given, and with the aide of Monte Carlo simulations, the effects of several parameters on improvement...
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