2023 CAP Congress / Congrès de l'ACP 2023

Session

(PPD) W1-1 Collider 3 | Collider 3 (PPD)

W1-1

21 Jun 2023, 10:30

University of New Brunswick

Conveners

(PPD) W1-1 Collider 3 | Collider 3 (PPD)

• Jess McIver

3770. (I) Belle II Experiment Highlights and Future Prospects

Savino Longo (University of Manitoba)

21/06/2023, 10:30

Particle Physics / Physique des particules (PPD)

Invited Speaker / Conférencier(ère) invité(e)

The Belle II experiment at the SuperKEKB asymmetric $e^{+}{e}^{-}$ collider in Japan is a state-of-the-art upgrade to the original Belle experiment and is searching for new physics at the Intensity Frontier. Since commencing physics data taking in 2019, SuperKEKB has become the world’s highest luminosity particle collider as Belle II approaches its target integrated luminosity of 50 ab${}^{-1}$, which...

3561. (G*) Discriminating Hadronic Split Offs Using the KLM at Belle-II

Garrett Leverick

21/06/2023, 11:00

Particle Physics / Physique des particules (PPD)

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

Belle-II is a B-factory experiment on the luminosity frontier. The high luminosity leads to high backgrounds, specifically in the electro-magnetic calorimeter (ECL). The ECL is a subdetector made from CsI scintillators, mostly serving to detect photons and measure their energy. One background comes in the form of hadronic split offs which mimic low energy photons. These occur when a hadron...

3902. (G*) Demonstration of Tau Polarimetry for SuperKEKB Polarization Upgrade

Caleb Miller

21/06/2023, 11:15

Particle Physics / Physique des particules (PPD)

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

A polarized electron beam is being considered as an upgrade for the SuperKEKB accelerator, which would enable a new precision electroweak physics program at Belle II. For many of the proposed measurements the dominant systematic uncertainty is expected to be the precision with which the average beam polarization is known. A novel technique for measuring beam polarization in $e^{+}{e}^{-}$...

3562. (G*) ATLAS small-Strip Thin Gap Chamber Signal Strength Studies

Leesa Brown (University of Victoria (CA))

21/06/2023, 11:30

Particle Physics / Physique des particules (PPD)

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

The New Small Wheel (NSW) is the largest major upgrade of the ATLAS Muon Spectrometer and was installed during the Large Hadron Collider (LHC) Long Shutdown 2 (2019-2021). The NSW replaced both of the 9-metre-diameter ‘small’ wheels constituting the part of the Muon Spectrometer closest to the beam line. The NSW is composed of two technologies: MicroMegas and small-Strip Thin Gap Chambers...

3761. Searching for Beyond-Standard-Model charged Higgs bosons in low-mass $W\gamma$ resonances.

Zhelun Li (McGill University, (CA))

21/06/2023, 11:45

Particle Physics / Physique des particules (PPD)

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

A search for a beyond the Standard Model charged Higgs boson through $W\gamma$ resonances is presented, with a focus on the leptonic channel. The final state consists of either an electron or muon accompanied by at least one photon and less than two jets alongside a veto of b-jets is required. The analysis is based on the 139 $f{b}^{-1}$ of the proton-proton collision data at the centre-of-mass...