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
Khachatryan V
(2015)
Search for narrow high-mass resonances in proton-proton collisions at s = 8 TeV decaying to a Z and a Higgs boson
in Physics Letters B
Abdallah J
(2015)
Simplified models for dark matter searches at the LHC
in Physics of the Dark Universe
Khachatryan V
(2015)
Search for new resonances decaying via WZ to leptons in proton-proton collisions at s = 8 TeV
in Physics Letters B
Li W
(2015)
Explore the high-density QCD medium via particle correlations in pPb collisions at CMS
in Annals of Physics
Khachatryan V
(2015)
Search for a standard model Higgs boson produced in association with a top-quark pair and decaying to bottom quarks using a matrix element method.
in The European physical journal. C, Particles and fields
Daci N
(2015)
Dark matter searches in CMS
in Journal of Physics: Conference Series
Aaij R
(2015)
Study of W boson production in association with beauty and charm
in Physical Review D
Lee Y
(2015)
Studies of dijet pseudorapidity distributions and transverse momentum balance in pPb collisions at s N N = 5.02 TeV
in Annals of Physics
Khachatryan V
(2015)
Search for a pseudoscalar boson decaying into a Z boson and the 125 GeV Higgs boson in l + l - b b ? final states
in Physics Letters B
Aaij R
(2015)
Measurement of CP asymmetries and polarisation fractions in B s 0 ? K * 0 K ¯ * 0 $$ {B}_s^0\to {K}^{\ast 0}{\overline{K}}^{\ast 0} $$ decays
in Journal of High Energy Physics
Aaij R
(2015)
Measurement of the semileptonic CP asymmetry in B0-B[over ¯]0 mixing.
in Physical review letters
Aaij R
(2015)
Measurement of the [Formula: see text] production cross-section in proton-proton collisions via the decay [Formula: see text].
in The European physical journal. C, Particles and fields
Khachatryan V
(2015)
Long-range two-particle correlations of strange hadrons with charged particles in pPb and PbPb collisions at LHC energies
in Physics Letters B
Khachatryan V
(2015)
Measurement of the Z? production cross section in pp collisions at 8 TeV and search for anomalous triple gauge boson couplings
in Journal of High Energy Physics
Petrucciani G
(2015)
Mini-AOD: A New Analysis Data Format for CMS
in Journal of Physics: Conference Series
Aaij R
(2015)
Model-independent confirmation of the Z ( 4430 ) - state
in Physical Review D
Brooke J
(2015)
SWATCH: common control SW for the uTCA-based upgraded CMS L1 Trigger
in Journal of Physics: Conference Series
Aaij R
(2015)
Measurement of the Z+b-jet cross-section in pp collisions at s $$ \sqrt{s} $$ = 7 TeV in the forward region
in Journal of High Energy Physics
Theofilatos K
(2015)
Search for a dileptonic edge with CMS
in EPJ Web of Conferences
Benoît R
(2015)
Recent CMS results on diffraction
in International Journal of Modern Physics A
Khachatryan V
(2015)
Searches for third-generation squark production in fully hadronic final states in proton-proton collisions at s = 8 $$ \sqrt{s}=8 $$ TeV
in Journal of High Energy Physics
Gao R
(2015)
Development of scalable electronics for the TORCH time-of-flight detector
in Journal of Instrumentation
Khachatryan V
(2015)
Searches for supersymmetry based on events with b jets and four W bosons in pp collisions at 8 TeV
in Physics Letters B
Kumar A
(2015)
Near future upgrades of the CMS pixel detector
in Journal of Instrumentation
Müller T
(2015)
Evidence for the 125 GeV Higgs Boson Decaying into Taus at the CMS Experiment
in Nuclear and Particle Physics Proceedings
Aaij R
(2015)
Search for Hidden-Sector Bosons in B(0)?K(*0)µ(+)µ(-) Decays.
in Physical review letters
Apresyan A
(2015)
Performance of MET reconstruction in CMS
in Journal of Physics: Conference Series
Aaij R
(2015)
Angular analysis and differential branching fraction of the decay B s 0 ? ?µ + µ -
in Journal of High Energy Physics
Aaij R
(2015)
Measurement of the time-dependent CP asymmetries in B s 0 ? J/?K S 0
in Journal of High Energy Physics
Bartók M
(2015)
Simulation of the dynamic inefficiency of the CMS pixel detector
in Journal of Instrumentation
Khachatryan V
(2015)
Search for resonant pair production of Higgs bosons decaying to two bottom quark-antiquark pairs in proton-proton collisions at 8 TeV
in Physics Letters B
Collaboration T
(2015)
Performance of the CMS missing transverse momentum reconstruction in pp data at v s = 8 TeV
in Journal of Instrumentation
Knutzen S
(2015)
Exotica and SUSY Results with t Leptons at the LHC
in Nuclear and Particle Physics Proceedings
Khachatryan V
(2015)
Measurement of the underlying event activity using charged-particle jets in proton-proton collisions at s = 2.76 $$ \sqrt{s}=2.76 $$ TeV
in Journal of High Energy Physics
Savin A
(2015)
Prospects for Higgs and SM measurements at the HL-LHC
in EPJ Web of Conferences
Stringer R
(2015)
A digital readout system for the CMS Phase I Pixel Upgrade
in Journal of Instrumentation
Collaboration T
(2015)
Measurement of the track reconstruction efficiency at LHCb
in Journal of Instrumentation
Chouridou S
(2015)
Recent results on associated vector boson production with the ATLAS and CMS experiments
in EPJ Web of Conferences
Bilki B
(2015)
CMS Forward Calorimeters Phase II Upgrade
in Journal of Physics: Conference Series
Khachatryan V
(2015)
Measurement of J/? and ?(2S) Prompt Double-Differential Cross Sections in pp Collisions at sqrt[s]=7 TeV.
in Physical review letters
Aaij R
(2015)
Forward production of ? mesons in pp collisions at s = 7 $$ \sqrt{s}=7 $$ and 8 TeV
in Journal of High Energy Physics
Khachatryan V
(2015)
Search for physics beyond the standard model in dilepton mass spectra in proton-proton collisions at s = 8 $$ \sqrt{s}=8 $$ TeV
in Journal of High Energy Physics
Khachatryan V
(2015)
Search for supersymmetry in the vector-boson fusion topology in proton-proton collisions at s = 8 $$ \sqrt{s}=8 $$ TeV
in Journal of High Energy Physics
Zsigmond A
(2015)
Study of Z boson production in pp, pPb and PbPb collisions in CMS
in Journal of Physics: Conference Series
Trauger H
(2015)
Jet quenching studies in CMS
in Journal of Physics: Conference Series
Khachatryan V
(2015)
Search for supersymmetry using razor variables in events with b -tagged jets in p p collisions at s = 8 TeV
in Physical Review D
Aaij R
(2015)
Search for long-lived heavy charged particles using a ring imaging Cherenkov technique at LHCb.
in The European physical journal. C, Particles and fields
Aaij R
(2015)
Observation of the B0??0?0 decay from an amplitude analysis of B0? (p+p-)(p+p-) decays
in Physics Letters B
Richards S
(2015)
The LHCb VELO upgrade
Khachatryan V
(2015)
Evidence for transverse-momentum- and pseudorapidity-dependent event-plane fluctuations in PbPb and p Pb collisions
in Physical Review C
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 | 10/2019 |
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 |