Optimising Triggers and Jet Reconstruction for Higgs Measurement with the ATLAS
Lead Research Organisation:
University of Sussex
Department Name: Sch of Mathematical & Physical Sciences
Abstract
The measurement of Higgs production and decay to hadronic final states is of crucial importance in measuring the Higgs coupling to fermions, in particular to bottom and top quarks. To maximize the potential reach of the ATLAS detector using data gathered in Run 2 if the LHC schedule, Daniel Kelsey will develop new techniques for identifying and reconstructing complex final states of Higgs decays against vast background processes that leave similar signatures in the ATLAS detector.
Studentship Projects
| Project Reference | Relationship | Related To | Start | End | Student Name |
|---|---|---|---|---|---|
| ST/N504452/1 | 01/10/2015 | 31/03/2021 | |||
| 1852475 | Studentship | ST/N504452/1 | 01/10/2016 | 30/06/2020 | Daniel Kelsey |
| Title | Development of algorithm for analysis of softdrop-groomed antikt4 hadronic jets |
| Description | Development of algorithm for analysis of Jet Substructure variables of flavour-tagged antikt-clustered "small" hadronic jets, formed from Montecarlo samples of ATLAS calorimeter tiles, following different levels of softdrop jet grooming. |
| Type Of Material | Data analysis technique |
| Year Produced | 2019 |
| Provided To Others? | Yes |
| Impact | Discovery that following softdrop grooming the mass of tau-flavour-tagged and quark-flavour-tagged jets matches closely the mass of of the originating parton or tau. |
| URL | https://gitlab.cern.ch/Sussex_Higgs_and_Jets/softdropathena/tree/minimal |
| Description | Qualification Task |
| Organisation | European Organization for Nuclear Research (CERN) |
| Department | ATLAS Collaboration |
| Country | Switzerland |
| Sector | Academic/University |
| PI Contribution | Development and production of code using python and C++ used for studies for the development of trigger software for the ATLAS collaboration. Development and production of code using python and C++ used for studies relating to analyses of Hadronic Jets and Higgs particles. Analysis of data through use of plots, graphs and a written report on projects related to the trigger. Communications and presentation of progress, ideas and results of project. |
| Collaborator Contribution | Supply of data and simulated data for purposes of studies. Supply of code and frameworks for programming to be used in. Intellectual and technical guidance throughout the project, including training and critical discussion of progress and results. |
| Impact | I |
| Start Year | 2016 |
| Description | Blog |
| Form Of Engagement Activity | Engagement focused website, blog or social media channel |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Public/other audiences |
| Results and Impact | Lead role in writing some blog posts for Sussex Experimental Particle Physics blog. Intended purpose was to inform the audience on scientific seminars and research based trips to workshops and conferences that take place within the department - to help construct a wider knowledge of the life of a PhD student (or researcher) involved in scientific research, and activities, opportunities and involvement available. Possible outcomes and informing the general public of the day-to-day workings of academics, researchers and students (particularly within science), and in particular informing students within the university (and within the physics department). |
| Year(s) Of Engagement Activity | 2016,2017 |
| URL | https://sussexepp.wordpress.com/ |
| Description | HiSpark |
| Form Of Engagement Activity | Participation in an activity, workshop or similar |
| Part Of Official Scheme? | No |
| Geographic Reach | Local |
| Primary Audience | Schools |
| Results and Impact | HiSPARC is a project in which secondary schools and academic institutions join forces and form a network to measure cosmic rays with extremely high energy. The HiSPARC project allows high school students to participate actively in real particle physics research, and experience what it means working in collaboration with other scientists from all over the world. As part of a HiSPARC project I helped guide and take part in a session that had school children build a particle detector at school - this included some hands-on building of a simple detector, as well as guiding and informing the school children on how to do parts themselves. |
| Year(s) Of Engagement Activity | 2017 |
| URL | http://www.sussex.ac.uk/epp/outreach/hisparc |
| Description | Science on the busses |
| Form Of Engagement Activity | Engagement focused website, blog or social media channel |
| Part Of Official Scheme? | No |
| Geographic Reach | Local |
| Primary Audience | Public/other audiences |
| Results and Impact | As part of a larger project to present information about the studying and research of physics, and to disseminate information on the workings and outcomes of research in astrophysics and experimental particle physics I took part in one of a number of interviews and talks with current PhD students and researcher working in these areas at the University of Sussex. These were recorded and placed both on a website, and within an app. Two busses in Brighton were decorated with information about the physics areas and are used around Brighton for the general public. Schools were also taken on trips on the busses with access to the apps and interviews. |
| Year(s) Of Engagement Activity | 2017 |
| URL | https://scienceonbuses.com/about/ |