Bristol Particle Physics Consolidated Grant 2015-19
Lead Research Organisation:
University of Bristol
Department Name: Physics
Abstract
The Bristol particle physics group will search for evidence of physics beyond the Standard Model, and work to understand the properties of new phenomena. We will carry out this study using a range of approaches and experiments.
At the CERN CMS experiment at the LHC, we will search for signatures of the production of dark matter and supersymmetric particles, using events with 'missing energy'. In the absence of a discovery, we will combine statistical information from our observations with results from cosmology and direct dark matter searches, to rule out potential theories of new physics. We will also use the very large datasets produced at the LHC to study the production and properties of the top quark, a standard model particle with unique properties.
We will use a complementary approach to search for new physics at the CERN LHCb experiment, looking for subtle signatures of new physics that manifest themselves in the decays of mesons containing heavy quarks. We will use similar approaches to test current ideas about the nature of fundamental quantum symmetries.
A number of new experiments are being prepared, and will be ready for use within or shortly after the grant period. The NA62 experiment at the CERN SPS will study the decays of kaons to look for signs of new physics. The SOLID experiment at the BR2 reactor will study neutrino oscillations on an ultra-short baseline of 5-10m. The SHiP experiment at the CERN SPS will use a very high intensity beam to search for 'dark particles' that are signatures of physics beyond the Standard Model. Finally, we have begun to make preparations for the detailed design and optimisation of detectors for a future linear collider.
We will continue our programme of particle detector R&D, contributing to the upgrade of CMS and LHCb, to the design and construction of new experiments, and to the development of new sensors and technologies. An important part of this programme will be collaboration with industry and other academic disciplines, in order to generate impact from our work.
At the CERN CMS experiment at the LHC, we will search for signatures of the production of dark matter and supersymmetric particles, using events with 'missing energy'. In the absence of a discovery, we will combine statistical information from our observations with results from cosmology and direct dark matter searches, to rule out potential theories of new physics. We will also use the very large datasets produced at the LHC to study the production and properties of the top quark, a standard model particle with unique properties.
We will use a complementary approach to search for new physics at the CERN LHCb experiment, looking for subtle signatures of new physics that manifest themselves in the decays of mesons containing heavy quarks. We will use similar approaches to test current ideas about the nature of fundamental quantum symmetries.
A number of new experiments are being prepared, and will be ready for use within or shortly after the grant period. The NA62 experiment at the CERN SPS will study the decays of kaons to look for signs of new physics. The SOLID experiment at the BR2 reactor will study neutrino oscillations on an ultra-short baseline of 5-10m. The SHiP experiment at the CERN SPS will use a very high intensity beam to search for 'dark particles' that are signatures of physics beyond the Standard Model. Finally, we have begun to make preparations for the detailed design and optimisation of detectors for a future linear collider.
We will continue our programme of particle detector R&D, contributing to the upgrade of CMS and LHCb, to the design and construction of new experiments, and to the development of new sensors and technologies. An important part of this programme will be collaboration with industry and other academic disciplines, in order to generate impact from our work.
Planned Impact
- There will be a societal impact amongst the general public as we publicise the results of our research through outreach.
- We will engage with school age students and teachers to convey the excitement of fundamental research, motivating more students to study STEM subjects at post-16 and HE levels.
- Engagement with UK industry through contracts and joint projects, and through the provision of well-trained physicists as employees, will result in economic impact
- Other academic disciplines will benefit from our skills, knowledge and capabilities, addressing a number of important problems across a range of fields
Full details are given in our Case for Support and Pathways to Impact document
- We will engage with school age students and teachers to convey the excitement of fundamental research, motivating more students to study STEM subjects at post-16 and HE levels.
- Engagement with UK industry through contracts and joint projects, and through the provision of well-trained physicists as employees, will result in economic impact
- Other academic disciplines will benefit from our skills, knowledge and capabilities, addressing a number of important problems across a range of fields
Full details are given in our Case for Support and Pathways to Impact document
Publications
Aaij R
(2016)
Observation of ? b 0 ? ?(2S)pK- and ? b 0 ? J/?p + p -pK- decays and a measurement of the ? b 0 baryon mass
in Journal of High Energy Physics
Khachatryan V
(2016)
Measurement of transverse momentum relative to dijet systems in PbPb and pp collisions at s N N = 2.76 $$ \sqrt{s_{\mathrm{NN}}}=2.76 $$ TeV
in Journal of High Energy Physics
Aaij R
(2021)
Measurement of differential $$ b\overline{b} $$- and $$ c\overline{c} $$-dijet cross-sections in the forward region of pp collisions at $$ \sqrt{s} $$ = 13 TeV
in Journal of High Energy Physics
Harnew S
(2018)
Model-independent determination of the strong phase difference between D0 and D ¯ 0 ? p + p - p + p - $$ {\overline{D}}^0\to {\pi}^{+}{\pi}^{-}{\pi}^{+}{\pi}^{-} $$ amplitudes
in Journal of High Energy Physics
Aaij R
(2021)
Measurement of the CKM angle ? in B± ? DK± and B± ? Dp± decays with D ? $$ {K}_{\mathrm{S}}^0 $$h+h-
in Journal of High Energy Physics
Aaij R
(2017)
Evidence for the two-body charmless baryonic decay B + ? p ? ¯ $$ {B}^{+}\to p\overline{\varLambda} $$
in Journal of High Energy Physics
Aaij R
(2015)
Determination of the branching fractions of B S 0 ? D S ± K ± and B 0 ? D S - K +
in Journal of High Energy Physics
Aaij R
(2017)
Erratum to: Measurement of the J/? pair production cross-section in pp collisions at s = 13 $$ \sqrt{s}=13 $$ TeV
in Journal of High Energy Physics
Aaij R
(2016)
Model-independent measurement of mixing parameters in D0 ? K S 0 p+p- decays
in Journal of High Energy Physics
Khachatryan V
(2015)
Search for physics beyond the standard model in events with two leptons, jets, and missing transverse momentum in pp collisions at s $$ \sqrt{s} $$ = 8 TeV
in Journal of High Energy Physics
Aaij R
(2015)
Measurement of the inelastic pp cross-section at a centre-of-mass energy of s $$ \sqrt{s} $$ = 7 TeV
in Journal of High Energy Physics
Khachatryan V
(2016)
Measurement of electroweak production of a W boson and two forward jets in proton-proton collisions at s = 8 $$ \sqrt{s}=8 $$ TeV
in Journal of High Energy Physics
Magnan A
(2017)
HGCAL: a High-Granularity Calorimeter for the endcaps of CMS at HL-LHC
in Journal of Instrumentation
Veszpremi V
(2015)
Radiation experience with the CMS pixel detector
in Journal of Instrumentation
Collaboration T
(2015)
Identification of beauty and charm quark jets at LHCb
in Journal of Instrumentation
Ravera F
(2016)
The CT-PPS tracking system with 3D pixel detectors
in Journal of Instrumentation
Bartók M
(2015)
Simulation of the dynamic inefficiency of the CMS pixel detector
in Journal of Instrumentation
Abreu Y
(2019)
Development of a quality assurance process for the SoLid experiment
in Journal of Instrumentation
Strobbe N
(2017)
The upgrade of the CMS hadron calorimeter with silicon photomultipliers
in Journal of Instrumentation
Khachatryan V
(2017)
Jet energy scale and resolution in the CMS experiment in pp collisions at 8 TeV
in Journal of Instrumentation
Caselle M
(2016)
Low-cost bump-bonding processes for high energy physics pixel detectors
in Journal of Instrumentation
Collaboration T
(2015)
Measurement of the track reconstruction efficiency at LHCb
in Journal of Instrumentation
Gao R
(2016)
Development of TORCH readout electronics for customised MCPs
in Journal of Instrumentation
Migliore E
(2016)
CMS Pixel Detector design for HL-LHC
in Journal of Instrumentation
Baesso P
(2015)
Degradation in the efficiency of glass Resistive Plate Chambers operated without external gas supply
in Journal of Instrumentation
Abreu Y
(2018)
Optimisation of the scintillation light collection and uniformity for the SoLid experiment
in Journal of Instrumentation
Zabi A
(2016)
Triggering on electrons, jets and tau leptons with the CMS upgraded calorimeter trigger for the LHC RUN II
in Journal of Instrumentation
Föhl K
(2016)
TORCH - Cherenkov and Time-of-Flight PID Detector for the LHCb Upgrade at CERN
in Journal of Instrumentation
Akiba K
(2016)
Characterisation of Medipix3 silicon detectors in a charged-particle beam
in Journal of Instrumentation
Collaboration T
(2015)
B flavour tagging using charm decays at the LHCb experiment
in Journal of Instrumentation
Hits D
(2015)
The CMS Pixel Readout Chip for the Phase 1 Upgrade
in Journal of Instrumentation
Zeiler M
(2016)
Design of Si-photonic structures to evaluate their radiation hardness dependence on design parameters
in Journal of Instrumentation
Auzinger G
(2016)
Deployment of the CMS Tracker AMC as backend for the CMS pixel detector
in Journal of Instrumentation
Abi B
(2020)
Volume IV. The DUNE far detector single-phase technology
in Journal of Instrumentation
Kreis B
(2016)
Run 2 upgrades to the CMS Level-1 calorimeter trigger
in Journal of Instrumentation
Conneely T
(2015)
The TORCH PMT: a close packing, multi-anode, long life MCP-PMT for Cherenkov applications
in Journal of Instrumentation
Palla F
(2016)
Track Finding in CMS for the Level-1 Trigger at the HL-LHC
in Journal of Instrumentation
Lagarde F
(2016)
High rate, fast timing Glass RPC for the high ? CMS muon detectors
in Journal of Instrumentation
Gao R
(2017)
Precision electronics for a system of custom MCPs in the TORCH Time of Flight detector
in Journal of Instrumentation
Khachatryan V
(2017)
The CMS trigger system
in Journal of Instrumentation
Harnew N
(2017)
Status of the TORCH time-of-flight detector
in Journal of Instrumentation
Pedraza-Morales M
(2016)
First results of CMS RPC performance at 13 TeV
in Journal of Instrumentation
Stringer R
(2015)
A digital readout system for the CMS Phase I Pixel Upgrade
in Journal of Instrumentation
Printz M
(2015)
T-CAD analysis of electric fields in n-in-p silicon strip detectors in dependence on the p-stop pattern and doping concentration
in Journal of Instrumentation
Vignali M
(2015)
Characterization of thin irradiated epitaxial silicon sensors for the CMS phase II pixel upgrade
in Journal of Instrumentation
Ahdida C
(2019)
Fast simulation of muons produced at the SHiP experiment using Generative Adversarial Networks
in Journal of Instrumentation
Nasr-Storey S
(2015)
Neutron and X-ray irradiation of silicon based Mach-Zehnder modulators
in Journal of Instrumentation
Peltola T
(2015)
A method to simulate the observed surface properties of proton irradiated silicon strip sensors
in Journal of Instrumentation
Gil E
(2017)
The beam and detector of the NA62 experiment at CERN
in Journal of Instrumentation
Aaij R
(2016)
A new algorithm for identifying the flavour of B 0 s mesons at LHCb
in Journal of Instrumentation
Description | Resources from this award funded our knowledge exchange programme, developing new detectors that are finding uses in medicine (radiotherapy), security and industrial applications. Findings have been discussed in outreach events, inspiring new generations and generating public interest. |
First Year Of Impact | 2015 |
Sector | Aerospace, Defence and Marine,Education,Energy,Healthcare,Security and Diplomacy |
Impact Types | Societal,Economic |
Description | DUNE UK Production Project |
Amount | £689,382 (GBP) |
Funding ID | ST/S00355X/1 |
Organisation | Science and Technologies Facilities Council (STFC) |
Sector | Public |
Country | United Kingdom |
Start | 09/2019 |
End | 09/2024 |
Description | Graphcore's IPUs |
Organisation | Graphcore |
Country | United Kingdom |
Sector | Private |
PI Contribution | Evaluating Graphcore's novel IPU processors, and, for the first time, implementing Particle Physics relevant software on them. Of particular interest not only to us, but also the community interested in these novel processors, is that we did not only use IPUs for machine learning (although we did that, too), but also non ML applications (Kalman Filter). Our work was also beneficial to our industrial partner in optimising and debugging their API. |
Collaborator Contribution | Cloud Access to IPUs and technical support. |
Impact | Paper: https://inspirehep.net/literature/1812756 (accepted for publication) |
Start Year | 2019 |
Description | Antimatter Matters |
Form Of Engagement Activity | Participation in an activity, workshop or similar |
Part Of Official Scheme? | No |
Geographic Reach | National |
Primary Audience | Public/other audiences |
Results and Impact | LHCb-UK and Alpha-UK organised a joint stand at the Royal Society summer exhibition 2016. The Bristol Particle Physics group participated in the organisation (printing T-shirts, stickers) and the presentation of the exhibits during the event. Antimatter Matters has its own website and has been presented at several other events throughout the UK. |
Year(s) Of Engagement Activity | 2016 |
URL | http://www.antimatter-matters.org/ |
Description | Bristol Bright Night 2014 |
Form Of Engagement Activity | Participation in an activity, workshop or similar |
Part Of Official Scheme? | Yes |
Geographic Reach | Local |
Primary Audience | Public/other audiences |
Results and Impact | Various STFC and ERC funded members of the university of Bristol gave public talks to audiences of various sizes (ranging from "pitch talks" of 5 min, to particle physicists contributing to a planetarium demonstration), we had a stall with particle physics-related activities and engaged with members of the public. Feedback was excellent. Positive audience feedback. |
Year(s) Of Engagement Activity | 2014 |
URL | http://www.bristol.ac.uk/public-engagement/events/2014/bristol-bright-night.html |
Description | Colloquium |
Form Of Engagement Activity | A talk or presentation |
Part Of Official Scheme? | No |
Geographic Reach | Local |
Primary Audience | Other audiences |
Results and Impact | Public colloquium at the school of physics. |
Year(s) Of Engagement Activity | 2017 |
Description | Cosmic 100 project at Bristol Balloon Fiesta |
Form Of Engagement Activity | Participation in an activity, workshop or similar |
Part Of Official Scheme? | Yes |
Geographic Reach | Local |
Primary Audience | Public/other audiences |
Results and Impact | Lots of discussions with the public at the LHC exhibit. Media coverage of balloon flight with particle detector. Don't know how to answer this. |
Year(s) Of Engagement Activity | 2012 |
URL | http://www.bris.ac.uk/news/2012/8694.html |
Description | Pint of Science |
Form Of Engagement Activity | A talk or presentation |
Part Of Official Scheme? | No |
Geographic Reach | Local |
Primary Audience | Public/other audiences |
Results and Impact | A talk and discussion on the theme of antimatter to a general audience in a pub (including a demonstration with a spark chamber through which muons and anti-muons passed), part of the "Pint of Science" series of events. |
Year(s) Of Engagement Activity | 2017 |
URL | https://pintofscience.co.uk/about/ |
Description | Women in STEMM |
Form Of Engagement Activity | Participation in an open day or visit at my research institution |
Part Of Official Scheme? | No |
Geographic Reach | Local |
Primary Audience | Schools |
Results and Impact | Event engaging year 8/9 students in science activities, with an emphasis on female role models. The Bristol particle physics group had a stand with hands-on activities, spark chamber, and a video presentation introducing famous female particle physicists. |
Year(s) Of Engagement Activity | 2017 |
URL | https://www.bristol.ac.uk/biochemistry/public/events/2017/event---women-in-stemm.html |