2022 CAP Congress / Congrès de l'ACP 2022

Session

M2-1 Exploring the Energy and Precision Frontier II (PPD) | Exploration de la frontière d'énergie et de précision II (PPD)

M2-1

6 Jun 2022, 13:15

McMaster University

Conveners

M2-1 Exploring the Energy and Precision Frontier II (PPD) | Exploration de la frontière d'énergie et de précision II (PPD)

• Dominique Anderson Trischuk (Brandeis University (US))

3016. (I) ATLAS Highlights

Ellis Kay (University of Victoria (CA))

06/06/2022, 13:15

Particle Physics / Physique des particules (PPD)

Invited Speaker / Conférencier(ère) invité(e)

The ATLAS collaboration has been preparing for the imminent Run-3 data-taking period during the long shutdown of the LHC. In this presentation, the upgrades to the detector which have been installed and commissioned during this time will be presented. Aside from these hardware and software improvements, the collaboration has been exploiting the wealth of Run-2 data in order to perform a wide...

3180. (G*) Relative luminosity measurement and long-term stability studies with ATLAS-TPX network during LHC Run-2.

Muhammad Usman (Universite de Montreal (CA))

06/06/2022, 13:45

Particle Physics / Physique des particules (PPD)

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

ATLAS-TPX network is a network of 15 pixelated detectors based on Timepix ASICs
which was installed in ATLAS cavern to measure the Radiation Field composition and Luminosity
during Run 2 in the framework of a collaboration between Montreal University and IEAP Czech
Technical University in Prague. The Timepix silicon detectors are two-layered and equipped
with neutron converters (Lithium...

3192. (G*) Most precise measurement of the top-quark pair production cross-section in the single-lepton channel

Sahibjeet Singh (University of Toronto (CA))

06/06/2022, 14:00

Particle Physics / Physique des particules (PPD)

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

The inclusive top-quark pair ($t\bar{t}$) production cross-section was measured in proton-proton collisions at a center of mass energy of 5 TeV with 257 pb$^{-1}$ of data collected by the ATLAS detector. The $t\bar{t}$ cross-section measurement at a lower center of mass helps to further constrain the gluon Parton Distribution Function (PDF) at high Bjorken $x$. The cross-section is first...

3213. Search for single production of a vector-like T quark decaying into a Higgs boson and top quark with fully hadronic final states using the ATLAS detector

Joel Hengwei Foo (University of Toronto (CA))

06/06/2022, 14:15

Particle Physics / Physique des particules (PPD)

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

A search is made for a vector-like $T$ quark decaying into a Higgs boson and a top quark in 13 TeV proton-proton collisions using the ATLAS detector at the Large Hadron Collider with a data sample corresponding to an integrated luminosity of 139 fb$^{-1}$.
The all-hadronic decay modes $H \rightarrow b\bar{b}$ and $t \rightarrow bW \rightarrow bq\bar{q}'$ are reconstructed as large-radius jets...

3333. (G*) Measurements of the production cross section for the collinear emission of a Z boson from a jet in pp collisions at 13 TeV with the ATLAS detector

Alexandre Laurier (Carleton University (CA))

06/06/2022, 14:30

Particle Physics / Physique des particules (PPD)

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

Measurements of the production cross section of a Z boson decaying to muons and electrons in association with at least one energetic jet (Z+jet) are presented. Then, the Z+jets events are further separated into a topology corresponding to the collinear emission of an on-shell Z boson from a high-energetic jet, corresponding to the radiation of a Z boson from a quark such that their angular...