2026 CAP Congress / Congrès de l'ACP 2026

Session

(PPD) M2-10 | (PPD)

M2-10

22 Jun 2026, 14:15

U. Ottawa - Learning Crossroads (CRX) Building

1015. Standard Model, Higgs and di-Higgs precision physics with ATLAS at the LHC

Matthew Basso (TRIUMF (CA))

22/06/2026, 14:15

Particle Physics / Physique des particules (PPD)

Invited Speaker / Conférencier(ère) invité(e)

Precision measurements of W, Z and Higgs boson production are presented. Such measurements are powerful probes of the electroweak sector of the Standard Model as well as proton structure. First, the new results from ATLAS that include the world first measurements of the complete set of angular coefficients and full phase-space differential cross-sections of W boson production is summarized. The...

587. What can collider experiments tell us about axions in multi-Higgs models

Srobona Basak (Carleton University)

22/06/2026, 14:45

Particle Physics / Physique des particules (PPD)

Oral Competition (Graduate Student) / Compétition orale (Étudiant(e) du 2e ou 3e cycle)

The QCD axion has long been considered to provide a natural solution to the strong CP problem. One of the two main classes of models that give rise to an axion is the Dine-Fischler-Srednicki-Zhitnitsky (DFSZ) model, which contains two Higgs doublets and a singlet complex scalar field. Generally, the LHC does not conduct searches for the QCD axion, whereas experiments at the LHC are very...

613. A dark matter search with the ATLAS detector for an emerging jet signature

Jérémie LePage-Bourbonnais (Carleton University)

22/06/2026, 15:00

Particle Physics / Physique des particules (PPD)

Oral Competition (Graduate Student) / Compétition orale (Étudiant(e) du 2e ou 3e cycle)

The nature of dark matter and its properties remains one of the most important open questions in modern physics. Under a theorized analogue of Standard Model QCD, high energy proton-proton collisions at the LHC could produce a unique signature consisting of two beams or ‘jets’ of Standard Model particles, and two composed of dark matter. The dark matter particles would then decay back into SM...

795. Non-thermal Leptogenesis and Cosmic Inflation

Tammi Chowdhury (University of Manitoba)

22/06/2026, 15:15

Particle Physics / Physique des particules (PPD)

Oral Competition (Graduate Student) / Compétition orale (Étudiant(e) du 2e ou 3e cycle)

There are more particles than antiparticles in our universe. A simple solution to this unexpected asymmetry, known as the baryon asymmetry of our universe (BAU), is leptogenesis, where a heavy right-handed neutrino (RHN) is introduced. Interestingly, the mass of the RHN coincides with the energy scales during inflation. In addition to this outstanding problem, dark matter continues to be...

1000. Background Estimation for Precision Electroweak Measurements with ATLAS Detector

Ishan Vyas (Carleton University (CA))

22/06/2026, 15:30

Particle Physics / Physique des particules (PPD)

Oral Competition (Graduate Student) / Compétition orale (Étudiant(e) du 2e ou 3e cycle)

Electroweak production of a Z boson in association with two jets (EW Zjj) provides a clean way of probing vector boson fusion (VBF) and is a crucial test of the electroweak couplings within the Standard Model at high energies. Using the ATLAS detector at the Large Hadron Collider, this analysis measures differential cross sections in the dilepton channel, focusing on the characteristic VBF...