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
Kurt Garberson P
(2016)
Jets and high-pT probes of the QGP
in Nuclear and Particle Physics Proceedings
Salur S
(2016)
Jets In Heavy Ion Collisions with CMS
in Journal of Physics: Conference Series
Calabria C
(2016)
Large-size triple GEM detectors for the CMS forward muon upgrade
in Nuclear and Particle Physics Proceedings
Gys T
(2018)
Latest results from the TORCH R&D Project
in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Miloševic J
(2015)
Latest Results on Anisotropy in $p$Pb and PbPb Collisions from CMS
in Acta Physica Polonica B Proceedings Supplement
Devetak D
(2016)
Leading and Sub-leading Flows at the LHC from the CMS
in Acta Physica Polonica B Proceedings Supplement
Adinolfi, M
(2016)
LHCb Upgraded RICH 1 Engineering Design Review Report
Adinolfi M
(2016)
LHCb Upgraded RICH 1 Engineering Design Review Report
Akiba K
(2019)
LHCb VELO Timepix3 telescope
in Journal of Instrumentation
Boursette D
(2017)
Light yield and energy resolution studies for SoLid phase 1
in Journal of Physics: Conference Series
Khachatryan V
(2015)
Limits on the Higgs boson lifetime and width from its decay to four charged leptons
in Physical Review D
Abi B
(2020)
Long-baseline neutrino oscillation physics potential of the DUNE experiment DUNE Collaboration
in The European Physical Journal C
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
Cerci S
(2016)
Low p Jet Cross Section Measurement in pp Collisions at s = 8 TeV
in Nuclear and Particle Physics Proceedings
Caselle M
(2016)
Low-cost bump-bonding processes for high energy physics pixel detectors
in Journal of Instrumentation
Alexander M
(2018)
Mapping the material in the LHCb vertex locator using secondary hadronic interactions
in Journal of Instrumentation
Aaij R
(2020)
Measurement of $${\psi {(2S)}} $$ production cross-sections in proton-proton collisions at $$\sqrt{s} =7$$ and $$13\text { TeV} $$
in The European Physical Journal C
Khachatryan V
(2016)
Measurement of [Formula: see text] production with additional jet activity, including [Formula: see text] quark jets, in the dilepton decay channel using pp collisions at [Formula: see text].
in The European physical journal. C, Particles and fields
Aaij R
(2018)
Measurement of Angular and CP Asymmetries in D^{0}?p^{+}p^{-}µ^{+}µ^{-} and D^{0}?K^{+}K^{-}µ^{+}µ^{-} Decays.
in Physical review letters
Aaij R
(2018)
Measurement of Antiproton Production in p-He Collisions at sqrt[s_{NN}]=110 GeV.
in Physical review letters
Aaij R
(2019)
Measurement of B + , B 0 and ? b 0 production in p Pb collisions at s NN = 8.16 TeV
in Physical Review D
Aaij R
(2019)
Measurement of b hadron fractions in 13 TeV p p collisions
in Physical Review D
Aaij R
(2017)
Measurement of B0, B s 0 , B+ and ? b 0 production asymmetries in 7 and 8 TeV proton-proton collisions
in Physics Letters B
Aaij R
(2017)
Measurement of B_{s}^{0} and D_{s}^{-} Meson Lifetimes.
in Physical review letters
Aaij R
(2015)
Measurement of Bc+ Production in Proton-Proton Collisions at v[s]=8 TeV.
in Physical review letters
Aaij R
(2020)
Measurement of branching fraction ratios for B+ ? D*+D-K+, B+ ? D*-D+K+, and B0 ? D*-D0K+ decays
in Journal of High Energy Physics
Aaij R
(2018)
Measurement of branching fractions of charmless four-body ? b 0 and ? b 0 decays
in Journal of High Energy Physics
Aaij R
(2018)
Measurement of C P asymmetries in two-body B ( s ) 0 -meson decays to charged pions and kaons
in Physical Review D
Aaij R
(2021)
Measurement of C P asymmetry in D 0 ? K S 0 K S 0 decays
in Physical Review D
Aaij R
(2019)
Measurement of Charged Hadron Production in Z-Tagged Jets in Proton-Proton Collisions at sqrt[s]=8 TeV.
in Physical review letters
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
(2017)
Measurement of CP asymmetries in D± ? ?'p± and D s ± ? ? ' p ± decays
in Physics Letters B
Aaij R
(2017)
Measurement of CP asymmetry in D0?K-K+ decays
in Physics Letters B
Aaij R
(2018)
Measurement of CP observables in B±?D(?)K± and B±?D(?)p± decays
in Physics Letters B
Aaij R
(2016)
Measurement of CP observables in B±?DK± and B±?Dp± with two- and four-body D decays
in Physics Letters B
Aaij R
(2015)
Measurement of CP Violation in B0?J/?K{S}^{0} Decays.
in Physical review letters
Aaij R
(2016)
Measurement of CP Violation in B^{0}?D^{+}D^{-} Decays.
in Physical review letters
Aaij R
(2021)
Measurement of CP Violation in the Decay B^{+}?K^{+}p^{0}.
in Physical review letters
Aaij R
(2015)
Measurement of CP violation parameters and polarisation fractions in B s 0 ? J / ? K ¯ * 0 $$ {\mathrm{B}}_{\mathrm{s}}^0\to \mathrm{J}/\psi {\overline{\mathrm{K}}}^{\ast 0} $$ decays
in Journal of High Energy Physics
Aaij R
(2020)
Measurement of CP-Averaged Observables in the B^{0}?K^{*0}µ^{+}µ^{-} Decay.
in Physical review letters
Aaij R
(2019)
Measurement of CP-Violating and Mixing-Induced Observables in B_{s}^{0}??? Decays.
in Physical review letters
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
Khachatryan V
(2016)
Measurement of differential and integrated fiducial cross sections for Higgs boson production in the four-lepton decay channel in pp collisions at s = 7 $$ \sqrt{s}=7 $$ and 8 TeV
in Journal of High Energy Physics
Khachatryan V
(2016)
Measurement of differential cross sections for Higgs boson production in the diphoton decay channel in pp collisions at [Formula: see text].
in The European physical journal. C, Particles and fields
Tao J
(2015)
Measurement of differential cross sections for isolated photon pairs in pp collisions at s = 7 TeV
in Nuclear and Particle Physics Proceedings
Khachatryan V
(2015)
Measurement of diffractive dissociation cross sections in p p collisions at s = 7 TeV
in Physical Review D
Khachatryan V
(2016)
Measurement of dijet azimuthal decorrelation in pp collisions at [Formula: see text].
in The European physical journal. C, Particles and fields
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
Khachatryan V
(2015)
Measurement of electroweak production of two jets in association with a Z boson in proton-proton collisions at [Formula: see text].
in The European physical journal. C, Particles and fields
Aaij R
(2020)
Measurement of f_{s}/f_{u} Variation with Proton-Proton Collision Energy and B-Meson Kinematics.
in Physical review letters
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 |