Conveners
Nuclear, Particle and Radiation Physics
- Rudolph Nchodu (iThemba LABS)
Nuclear, Particle and Radiation Physics
- Deepak Kar (University of Witwatersrand)
Nuclear, Particle and Radiation Physics
- fhumulani nemulodi (iThemba LABS)
Nuclear, Particle and Radiation Physics
- Rudolph Nchodu (iThemba LABS)
Nuclear, Particle and Radiation Physics
- Manny Mathuthu (North West University- Mafikeng)
Nuclear, Particle and Radiation Physics
- James Michael Keaveney (N/A)
Nuclear, Particle and Radiation Physics
- Simon Connell (University of Johannesburg)
Nuclear, Particle and Radiation Physics: Division Meeting
- There are no conveners in this block
Nuclear, Particle and Radiation Physics
- Joele Mira (iThemba LABS)
Nuclear, Particle and Radiation Physics
- There are no conveners in this block
Dr
Muneer Sakildien
(iThemba LABS)
09/07/2019, 10:00
Dr
Joele Mira
(iThemba LABS)
09/07/2019, 10:20
Dr
fhumulani nemulodi
(iThemba LABS)
09/07/2019, 10:40
Mr
Kevin Nicholas Barends
(University of Cape Town)
09/07/2019, 11:20
Track B - Nuclear, Particle and Radiation Physics
Oral Presentation
High precision measurements of the top quark mass have been widely sought after since the discovery of the top quark. This mass is correlated with the top quark's decay products and the best current measurements are predominantly limited by uncertainties related to the reconstruction of jets. However, there are top quark decay signatures which are largely independent of the aforementioned...
Mr
Ryan Atkin
(University of Cape Town)
09/07/2019, 11:40
Track B - Nuclear, Particle and Radiation Physics
Oral Presentation
The Large Hadron Collider (LHC) is planned to be upgraded to the High Luminosity LHC (HL-LHC), which will increase the number of particles passing through the detectors. This will require the detectors to be upgraded in order to cope with the large increase in data collection and radiation as well as improving the tracking and particle reconstruction in the higher occupancy environment. A...
Mr
Matthew Leigh
(University of Cape Town)
09/07/2019, 12:00
Track B - Nuclear, Particle and Radiation Physics
Oral Presentation
The missing transverse momentum ($E_T^{miss}$) of a $pp$ collision is an important observable as it serves as a proxy for the transverse momentum carried away by undetectable particles. In addition to Standard Model neutrinos, there exist many theorised particles which would not leave any signals in a detector. Therefore, measuring $E_T^{miss}$ with high degrees of accuracy is critical for the...
Phineas Ntsoele
(University of Johannesburg)
09/07/2019, 12:20
Track B - Nuclear, Particle and Radiation Physics
Oral Presentation
The Large Hadron Collider’s (LHC) most significant discoveries are: firstly a Higgs Boson (discovered on July 4, 2012) and secondly no physics beyond the Standard Model (BSM). This is despite the fact something BSM is so well motivated from especially astrophysics and theoretical considerations. Searches must become more powerful and extend to regions not yet covered. This paper describes a...
Mr
Karabo Mdluli
(University of the Witwatersrand)
09/07/2019, 12:40
Track B - Nuclear, Particle and Radiation Physics
Oral Presentation
A search for the dark matter in association with the Standard Model like Higgs boson was performed using up to 37 fb^(-1) pp collision data collected by the ATLAS detector at the Large Hadron Collider during 2015–2016 are summarised.
In high energy physics, deep learning is used to increase the sensitivity of physics analyses and provides a handle to evaluate the performance and potential for...
Mr
Witness Chirume
(National University of Science and Technology)
10/07/2019, 10:00
Mr
Otsile Tikologo
(BIUST)
10/07/2019, 10:20
Prof.
Simon Connell
(University of Johannesburg)
10/07/2019, 10:40
Ms
Sinegugu Happiness Mthembu
(iThemba LABS)
10/07/2019, 11:40
Prof.
Manny Mathuthu
(North West University- Mafikeng)
10/07/2019, 12:00
Mr
Linda Mdletshe
(iThemba Laboratory for Accelerator Based Sciences)
10/07/2019, 12:40
Mr
Abbey Maheso
(Stellenbosch University)
10/07/2019, 14:00
Ms
Nthabiseng Sylvia Mohlala
(University of Witwatersrand)
10/07/2019, 14:20
Ms
LEBOGANG PHEFO
(UNIVERSITY OF ZULULAND)
10/07/2019, 14:40
Mr
Caspah Kamunda
(North West University (Mafikeng))
10/07/2019, 15:00
Mr
Jeremiah Monnakgotla
(University of the Witwatersrand)
11/07/2019, 10:00
Track B - Nuclear, Particle and Radiation Physics
Oral Presentation
This analysis presents the top-quark background estimation for the $H\rightarrow Sh$ channel using the full Run-2 data, corresponding to an integrated luminosity of 139 fb$^{-1}$ of $pp$ collisions at $\sqrt{s}=$13 TeV.$~$The final state for this analysis is formed by two oppositely-charged leptons ($e^{\pm}\mu^{\mp},\mu^{\pm}e^{\mp},e^{\pm}\mu^{\mp}+ \mu^{\pm}e^{\mp}$) and jets. In this...
Mr
Kokotla Rapetsoa
(University of Venda)
11/07/2019, 10:20
Track B - Nuclear, Particle and Radiation Physics
Oral Presentation
We implement a robust anti-QCD tagger with mass de-correlating jet image data produced using the pre-processing method introduced in arXiv: 1903.02032. We take a unsupervised (where the algorithm is trained on a mixture of signal and background data to resemble the proportion of signal and background in ATLAS) and semi-supervised (where data is only trained on background) learning anomaly...
Mr
Fortune Mhlanga
(University of the Witwatersrand)
11/07/2019, 10:40
Track B - Nuclear, Particle and Radiation Physics
Oral Presentation
The search for W'->tb decays in the hadronic final states using the full run 2 data, which was collected by the ATLAS detector at the Large Hadron Collider (LHC), is on going. This search relies on the optimal identification of large radius jets that emanates from the top-quark, hence a study to find a method that optimizes the top-quark reconstruction has been done. To conduct this study,...
Ms
Onesimo Mtintsilana
(University of Witwatersrand)
11/07/2019, 11:20
Track B - Nuclear, Particle and Radiation Physics
Oral Presentation
In this study, isolation efficiency variations between data and simulation are corrected so that the Monte Carlo (MC) describes the data as accurately as possible. The corrections applied are translated into scale factors. Differences between the MC simulation and the data arise not only because of poor description of the selection efficiencies in the simulation, but also due to the fact that...
Mr
Mzwandile Thabede
(University of the Witwatersrand)
11/07/2019, 11:40
Track B - Nuclear, Particle and Radiation Physics
Oral Presentation
We Categorize VBF-like events using cut-based approach for njets ≥ 2. This study focuses on the VBF signal optimization for the H→ZZ→4l channel and the separation of VBF events from the events produced via the gluon-gluon Fusion (ggF) production mechanism. The study is based on the ATLAS full Run2 Monte Carlo at the total luminosity of 140 fb-1. Major background contribution is from the...
Ms
Esra Shrif
(University of the Witwatersrand)
11/07/2019, 12:00
Track B - Nuclear, Particle and Radiation Physics
Oral Presentation
We search for a new heavy resonance in H→bbyy decay channel.
The range of the heavy boson mass is between [180-1500] GeV. The
analysis uses proton-proton collision data with an integrated luminosity of 140 fb−1 recorded at a centre-of-mass energy of 13 TeV with the ATLAS detector. In this work, we discuss event selections and signal optimisation. In addition, we compare data to...
Mr
Lebohang Mokoena
(University of the Witwatersrand)
11/07/2019, 12:20
Track B - Nuclear, Particle and Radiation Physics
Oral Presentation
A study is performed for the autonomous computation for cross section at the next-to- leading order in QCD for the WWjj background. The WWjj process is described and simulated using MadGraph with aMC@NLO framework, particularly suited for its parallel computation in Standard Model as well as Beyond the Standard Model theories. Interfacing with PYTHIA8 and HERWIG++ in leading order and next-...
Prof.
Bruce Mellado
(University of the Witwatersrand)
11/07/2019, 12:40
Track B - Nuclear, Particle and Radiation Physics
Oral Presentation
Based on a number of features from proton-proton collisions taken during data Run 1 data taking period at the LHC, a boson with a mass around the EW scale was postulated such that a significant fraction of its decays would entail the Standard Model (SM) Higgs boson and an additional scalar, S. One of the phenomenological implications of a simplified model, where S is treated a SM Higgs boson,...
Prof.
Bruce Mellado
(University of the Witwatersrand)
11/07/2019, 15:00
Track B - Nuclear, Particle and Radiation Physics
Mr
Thabiso Nkwashu
(University of South Africa)
12/07/2019, 10:00
Mr
Bonginkosi Zikhali
(University of wersten cape physics)
12/07/2019, 10:20
