Searching for supersymmetric (SUSY) signals in multileptonic decays of weakly interacting sparticles using ATLAS Run-2 data

Lead Research Organisation: University of Sussex
Department Name: Sch of Mathematical & Physical Sciences

Abstract

This student will work on the Sussex-led analysis searching for supersymmetric (SUSY) signals in multileptonic decays of weakly interacting sparticles using ATLAS Run-2 data. He will also work on the characterization of Standard Model processes that are backgrounds for multileptonic SUSY searche (eg, ttV processes). The student will also work on aspects of the ATLAS High-Level Trigger and on detector and trigger operations. It is expected that he will spend a period of Long-Term Attachment at CERN.

Publications

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Studentship Projects

Project Reference Relationship Related To Start End Student Name
ST/N504452/1 01/10/2015 31/03/2021
1803197 Studentship ST/N504452/1 19/09/2016 31/03/2020 Fabrizio Trovato
 
Description Sussex/IHEP exchange 
Organisation Chinese Academy of Sciences
Country China 
Sector Public 
PI Contribution I partecipate actively in a international exchange between my university and the Institute of High Energy Physics (Chinese Academy of Sciences). The programme is intended to create solid network and collaboration between the two different institutes. Along with my analysis, this regards other analyses my institute is involved in. I visited the IHEP in Beijing for a series of workshops in January 2019.
Collaborator Contribution Colleagues from China came visiting my institute last year and another trip is expected to happen later in 2019.
Impact Exchange of ideas and feedback on current analysis were particularly useful to me and gave me quite interesting insights by more-experienced people. Also, we have discussed possible future projects about actual combination of results between my work and theirs that will be extremely beneficial to delivering final results from the ATLAS collaboration.
Start Year 2018
 
Description European Physics Society - High-Energy Physics Conference, held in Ghent (Belgium) in July 2019 
Form Of Engagement Activity Participation in an activity, workshop or similar
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact European conference on High Energy Physics. Presented a poster: "Search for chargino and neutralino production with three leptons and
missing transverse momentum in the final states at vs = 13 TeV with the ATLAS detector"
Year(s) Of Engagement Activity 2019
URL http://eps-hep2019.eu
 
Description Participation in the IoP Joint HEPP and APP Annual Conference - held at Imperial College (London) in April 2019 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach National
Primary Audience Postgraduate students
Results and Impact Attended annual Institute of Physics (IoP) conference dedicated to High-Energy Particle Physics and Astro-Particle Physics.
I presented a talk on SUSY searches: "Search for chargino and neutralino production in final state with three leptons and missing transverse momentum, via WH intermediate decays"
Year(s) Of Engagement Activity 2019
URL https://indico.cern.ch/event/797094/timetable/#20190407
 
Description Presentation at 2018 MPS Postgraduate Research Conference (University of Sussex, Brighton) 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach Local
Primary Audience Undergraduate students
Results and Impact The aim of the conference was to share with other students from the university out PhD activities and latest results.

Title of my presentation was

"Run-2 searches for electroweak SUSY particles decaying via Wh bosons to three-lepton final states at ATLAS",

and abstract:

"The Large Hadron Collider (LHC) enables us to explore new physics beyond our current knowledge of elementary particles and their fundamental interactions. After the discovery of the Higgs boson in 2012, one of the main goals of the ATLAS and CMS experiments is to understand how well the Standard Model (SM) gives a complete and exhaustive description of the "particle world".
Among all the new theories which are accessible at the LHC centre of mass energy, Supersymmetry (SUSY) is one of the most accredited. In particular, the search for electroweak production of SUSY particles is a very exciting aspect of the SUSY searches within the ATLAS experiment physics program, including within so-called "natural SUSY" scenarios.
In my talk I will discuss the search for direct production of chargino-neutralino followed by decays into three-lepton final states via intermediate Wh bosons. This analysis allows the first Run-2 exploration of specific electroweak SUSY models and yet-to-be-inspected regions of the SUSY parameter space."

My talk was awarded as "Best presentation" of the conference.
Year(s) Of Engagement Activity 2018
URL http://www.sussex.ac.uk/broadcast/read/44608
 
Description Pushing the Boundaries - The Standard Model and Beyond at the LHC. Workshop dedicated to the current challenges in the search of BSM physics at colliders. Held at the IPPP in Durham (UK), 18-20 September 2019 
Form Of Engagement Activity A formal working group, expert panel or dialogue
Part Of Official Scheme? No
Geographic Reach National
Primary Audience Professional Practitioners
Results and Impact Workshop organised by the University of Sussex (Brighton) and the Institute for Particle Physics Phenomenology (Durham). I gave an Oral presentation of latest results and future prospects for the search for electroweak Supersymmetry with the ATLAS detector: "Search for chargino and neutralino production in final state with three leptons and missing transverse momentum, via intermediate SM bosons"
Year(s) Of Engagement Activity 2019
URL https://conference.ippp.dur.ac.uk/event/810/overview
 
Description School visit at CERN 
Form Of Engagement Activity Participation in an open day or visit at my research institution
Part Of Official Scheme? No
Geographic Reach National
Primary Audience Schools
Results and Impact I welcomed a class of students from a national school when they came visiting CERN in Geneva in autumn 2018. Students asked me various questions about my research project and broadly about the physics searches targeted by the ATLAS. They were also very curious about the everyday life of a researcher and the work environment at CERN.
Year(s) Of Engagement Activity 2018