2023 CAP Congress / Congrès de l'ACP 2023

Session

(PPD) M2-1 Collider 1 | Collisionneur 1 (PPD)

M2-1

19 Jun 2023, 14:00

University of New Brunswick

Conveners

(PPD) M2-1 Collider 1 | Collisionneur 1 (PPD)

• Katherine Pachal

3855. (I) ATLAS Run-3 Operations and Highlights

Jackson Carl Burzynski (Simon Fraser University (CA))

19/06/2023, 14:00

Particle Physics / Physique des particules (PPD)

Invited Speaker / Conférencier(ère) invité(e)

The Large Hadron Collider restarted collisions at $\sqrt{s}$ = 13.6 TeV in 2022, beginning the start of a planned 4-year Run 3. The ATLAS experiment is now commissioning several upgraded detector systems to best take advantage of the new dataset, including the New Small Wheels and phase-1 liquid argon electronics upgrade to which Canadian physicists made substantial contributions. This talk...

3555. Top Quark at the LHC: Exploring Beyond the Standard Model

Prof. Poulose Poulose (Indian Institute of Technology Guwahati)

19/06/2023, 14:30

Particle Physics / Physique des particules (PPD)

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

Top quark being the heaviest elementary particle, and the only quark which decays in its bare form, has the potential to reveal crucial information on particle dynamics. For example, precise measurement of top quark mass is needed to understand the vacuum structure, including its stability. Having the strongest coupling with Higgs boson, it can reveal information related to the electroweak...

3739. (G*) Reconstruction of Semi-Leptonic Top Anti-top Pair Production with Deep Learning at ATLAS

Jenna Lori Chisholm (University of British Columbia (CA))

19/06/2023, 14:45

Particle Physics / Physique des particules (PPD)

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

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...

3843. WITHDRAWN Performance of Isotropy for Jet Tagging

Jonathan Barrett

19/06/2023, 15:00

Particle Physics / Physique des particules (PPD)

Oral not-in-competition (Undergraduate Student) / Orale non-compétitive (Étudiant(e) du 1er cycle)

We use the newly proposed Energy Mover’s Distance as a measure of jet isotropy to define new jet substructure observables for quark/gluon discrimination and identifying hadronically-decaying top quarks with large transverse momentum. We assess their effectiveness by comparing them with other classifiers. The quark/gluon study is conducted at hadron level while the top quark study is conducted...

3851. (G*) Observation of Single Top-Quark Production in $pp$ Collisions at $\sqrt{s} = 5.02$ TeV with the ATLAS Detector

Chin Chong Leong (University of Toronto (CA))

19/06/2023, 15:15

Particle Physics / Physique des particules (PPD)

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

The $t$-channel single-top quark production is observed for the first time at a centre-of-mass energy of 5.02 TeV using proton-proton collision data collected by the ATLAS detector at the Large Hadron Collider. The observation is made using an event selection optimized for the $l$+jets decay topology of the single-top process, which requires candidate events to have exactly one charged lepton...