Sussex EPP 2012 Consolidated Grant Supplement

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


The Sussex Experimental Particle Physics group is involved in three strands of Particle Physics: the ATLAS experiment at
CERN's Large Hadron Collider; the SNO+ neutrino experiment at SNOLAB in Canada; and the nEDM experiment at ILL in
Grenoble, France. All three experiments probe some of the most fundamental properties of Nature and seek to find
evidence for new physics phenomena.
Sussex makes leading contributions to the analysis of ATLAS data, searching for evidence of supersymmetry in protonproton
interactions where electrons, muons or taus are produced in the final state. The discovery of supersymmetry would
provide evidence for new physics as well as possibly a link between particle physics and cosmology, by uncovering the
nature of the elusive Dark Matter in our universe. Sussex also makes important contribution to the ATLAS trigger system
(which acts like the experiment's "brain") -- through participation in trigger operations and in the development and
maintenance core software for the trigger system. The group is also involved in preparations for future upgrades of the
ATLAS trigger system.
Sussex provides substantial intellectual leadership in the ongoing search for an electric dipole moment (EDM) of the
neutron. Finding an EDM would represent unambiguous evidence for physics beyond the SM; conversely, the absence of
any EDM, at the sensitivity for which we are aiming, would provide extremely severe constraints on models of new physics.
This work also provides a link to cosmology, since the size of any neutron EDM is determined by the same CP-violating
mechanism that underlies the dominance of matter over antimatter in the Universe.
Sussex plays a crucial role in the SNO+ experiment, where it leads the calibration and the dataflow activities. The group is
also becoming involved in the crucial neutrinoless double-beta decay analysis, which could both determine the mass of the
neutrino and answer the long-standing question of whether the neutrino is its own antiparticle.
Group members are also becoming involved, at a smaller level, in new experiments for direct Dark Matter searches.

Planned Impact

Sussex EPP has been historically involved in fundamental research and therefore, by nature, the group has developed an
"impact agenda" that centres on the engagement with the general public and the training of highly numerate science
graduates, rather than on direct collaboration with industry. Therefore the group's "Pathways to Impact" revolves around a
case based on outreach activities and on the furthering of the Government's agenda to develop a science-savvy, highly
skilled graduate workforce. With support of Sussex's Outreach Officer, also funded by the South-East Physics Network (SEPnet), the group is involved
in a variety of Outreach activities aimed at the general public, including but not limited to secondary school pupils and their
teachers. In 2011, about 6000 members of the general public (among which about 200 school teachers and approximately
3000 pupils) visited Sussex to participate in Outreach events run also with support from Sussex EPP. Indirect evidence for
positive impact of the group's outreach strategy is seen in the exceptional growth in Sussex undergraduate applications,
which for 2012 entry has gone up by over 100% since 2011, to be compared to an 8.3% increase nationally for Physics
Knowledge exchange and economic impact from the group mainly stem from the training of highly skilled undergraduate
and PhD students, PDRAs and technical staff - some of whom are likely to leave academia at some point in their career.
EPP activities require specialist knowledge of sophisticated detector technologies as well as of cutting-edge computing and
numerical techniques, all of which are in high demand in the private sector. Strong links with industry and regional
employers are maintained at Sussex through the SEPnet Employer Engagement programme, whose Director is Sussex based.
The University also pursues other mechanisms to support knowledge exchange. For example, the Sussex
Research & Enterprise Division, which also handles intellectual property rights and exploitation, is equipped to provide
support for emerging academic ideas that may merit commercialization in the future.
The Sussex EPP group is committed to the Impact agenda through continued development of its Outreach programme and
through the training of a highly skilled graduate workforce, so crucial in a knowledge-based economy. While mainly
engaged in fundamental research, the group also remains open to the possibility to export technologies and techniques to
industry in future, should the opportunity arise to do so.


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Aaboud M (2018) Measurement of colour flow using jet-pull observables in events with the ATLAS experiment at . in The European physical journal. C, Particles and fields

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Aaboud M (2018) Prompt and non-prompt and suppression at high transverse momentum in Pb+Pb collisions with the ATLAS experiment. in The European physical journal. C, Particles and fields

Description The Department of Physics & Astronomy at the University of Sussex runs an intense outreach programme, closely linked to the research carried out within the Department. Our WWW is Our activities not only involve research talks, but also hands on activities that introduce the basics of our research to the public. We work with members of the general public, and school and college students. We work with over 12,000 people per year, two-thirds of who are children of school age. We interact through stands at various science fairs and in classroom-type setting (including our travelling planetarium).
First Year Of Impact 2012
Sector Education
Impact Types Cultural,Societal

Description ATLAS Collaboration, CERN 
Organisation European Organization for Nuclear Research (CERN)
Country Switzerland 
Sector Public 
PI Contribution ATLAS is one of the genera-purpose detectors at CERN's Large Hadron Collider (LHC). Sussex is one of the institute participating in ATLAS, including in view of future experimental upgrades. We are contributing to the design of a tracking level-1 trigger for ATLAS for the High-Luminosity LHC (HL-LHC).
Collaborator Contribution Collaborators from other ATLAS institutes are also contributing to the design of the upgraded ATLAS trigger for the HL-LHC.
Start Year 2009
Description Feature Talk at British Science Festival (2017) - Visions of the Large Hadron Collider 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach National
Primary Audience Public/other audiences
Results and Impact Talk + Q&A with the audience. Prof Antonella De Santo with artist duo Semiconductor ( and philosopher Dr Beatrice Fazi (Sussex Humanities Lab), held at art gallery Fabrica, Brighton.
Year(s) Of Engagement Activity 2017
Description Higher-Education Summer School 
Form Of Engagement Activity Participation in an activity, workshop or similar
Part Of Official Scheme? No
Type Of Presentation Keynote/Invited Speaker
Geographic Reach National
Primary Audience Schools
Results and Impact About 50 students from widening participation groups engage in university-style activities (led by researchers) for a week every summer at Sussex.

Secondary-school students participating in the scheme get a hands-on experience of life as a university student.
Year(s) Of Engagement Activity 2010,2011,2012
Description Research-based Outreach 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Type Of Presentation Keynote/Invited Speaker
Geographic Reach Local
Primary Audience Schools
Results and Impact At the University of Sussex, we run a major outreach programme within the department of physics and astronomy, originally set up as part of the SEPnet initiative. The program involves members of the department at all levels, from taught undergraduate and postgraduate students, research students, post doctorial researchers and faculty. We have a wide range of practical activities available to take out to local schools, which are boxed up with a detailed lesson plan for department members to take to take out or use on site. The majority of our outreach activities are linked to our research.
Our annual reach is to 5,000 students per year, working with approximately 800 primary school students, 3500 secondary student, and 700 A-level students, in addition to the 2,000 members of the general public that experience our events. We currently run 130 events per year, reaching school and college students at 60 different schools. We have both schools visiting the University of Sussex campus in Brighton, and we also go out to schools.

Around half of our events involve communicating the research carried out at the University direct to schools, colleges and the public.
25% of our events involve describing our particle physics research, usually consisting of a research talk (about the Large Hadron Collider, SNO+, etc) which is reinforced by practical activities (such as building cloud chambers, or visiting our research labs).

Every week during the school terms, we run a School's Lab day, where a group of students visit the University for as full day of experiments specifically designed for the GCSE, AS and A2 level syllabus. During those days, the students visit a research lab, and get the opportunity to talk with our research students about their work. In addition, visiting A-level students also have a research lecture, and get to here the latest research being done here at Sussex.

Every year, we offer masterclasses in both astronomy and particle physics, with one day aimed at GCSE students, and another at A-level. These days involve research-level talks, visits to labs, as well as hands on experimental experience.

We have developed links with local schools and colleges. Teachers frequently approach us to request research related outreach activities (talks, lab tours, practical activities), ask for advice or to borrow equipment for teaching. In 2013, we ran the Institute of Physics sponsored Physic Update weekend conference for teachers.
Since we began our outreach program, undergraduate numbers has risen significantly within the department, from an intake of 40 students in 2009, up to the current (and sustained) 140 students per year.
Year(s) Of Engagement Activity 2009,2010,2011,2013,2014
Description Schools Lab 
Form Of Engagement Activity Participation in an open day or visit at my research institution
Part Of Official Scheme? No
Geographic Reach Regional
Primary Audience Schools
Results and Impact Groups of 10-15 pupils attend short talks about our research, which always spark discussion and debate.

Has become established part of SEPnet outreach programme. Capability is expanding, to reach more pupils.
Year(s) Of Engagement Activity 2006,2007,2008,2009,2010,2011,2012,2013,2014,2015,2016,2017