2026 CAP Congress / Congrès de l'ACP 2026

Session

(PPD) R1-6 | (PPD)

R1-6

25 Jun 2026, 14:15

U. Ottawa - Learning Crossroads (CRX) Building

1016. Searches and constraints on beyond the Standard Model (BSM) physics with the ATLAS Detector

John Patrick Mc Gowan (University of Victoria (CA))

25/06/2026, 14:15

Particle Physics / Physique des particules (PPD)

Invited Speaker / Conférencier(ère) invité(e)

The Standard Model is the reigning theory of fundamental particles and their interactions, and has held up to rigorous test at collider experiments up to and including the LHC. Despite this, the Standard model has known shortcomings, such as it's inability to explain the origin of dark matter, the matter-antimatter asymmetry of the universe, and the fine tuning of the Higgs Boson mass. Many...

583. Recurrence Relations and Dispersive Techniques for Precision Multi-Loop Calculations

Dr Aleksandrs Aleksejevs (Memorial University of Newfoundland)

25/06/2026, 14:45

Particle Physics / Physique des particules (PPD)

Oral (Non-Student) / Orale (non-étudiant(e))

Ab initio predictions of two-loop electroweak contributions to observables are increasingly essential for precision collider experiments, yet their evaluation remains very challenging. We connect recurrence techniques and dispersive method in order to evaluate complex multi-loop Feynman diagrams. By expressing multi-point Passarino-Veltman functions in a two-point basis and using shifted...

639. Constraints on on vector-like quark model from rare B decays.

Mohammad Ahmady

25/06/2026, 15:00

Particle Physics / Physique des particules (PPD)

Oral (Non-Student) / Orale (non-étudiant(e))

I examine the minimal vector-like quark model, where a single down-type vector quark is added to Standard Model in light of the latest experimental data on rare $B_(s)$ decays. It is shown that, considering the so far overlooked Higgs loop contributions, the imposes stringent constraint on the mass of the vector quark within the discovery range of LHC.

544. Search for Gravitational Wave-Coincident Neutrinos in DEAP-3600.

Daniel Huff (University of Houston)

25/06/2026, 15:15

Particle Physics / Physique des particules (PPD)

Oral not-in-competition (Graduate Student) / Orale non-compétitive (Étudiant(e) du 2e ou 3e cycle)

Gravitational wave observations from the Laser Interferometer Gravitational-Wave Observatory (LIGO) have been used to pinpoint the timing of several compact object mergers involving a neutron star over the past decade. These precise timestamps allow for more efficient searches for particle signals from a given merger by enabling tight coincidence-timing cuts that reduce background and allow...

1045. Sub-GeV dark matter from cosmic ray bremsstrahlung in the atmosphere

Branden Aitken

25/06/2026, 15:30

Particle Physics / Physique des particules (PPD)

Oral not-in-competition (Graduate Student) / Orale non-compétitive (Étudiant(e) du 2e ou 3e cycle)

The null results in direct detection motivate the exploration of a broader mass range for thermal relic dark matter (DM) candidates. An intuitive new place to extend these models is to consider masses in the MeV to GeV range. One way to do this and avoid bounds from the Cosmic Microwave Background is to introduce a dark sector consisting of a dark mediator and stable DM candidate.
In this...