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
(2016)
Erratum to: Comparison of the Z/?* + jets to ? + jets cross sections in pp collisions at s = 8 $$ \sqrt{s}=8 $$
in Journal of High Energy Physics
Khachatryan V
(2015)
Search for a standard model-like Higgs boson in the µ + µ - and e + e - decay channels at the LHC
in Physics Letters B
Khachatryan V
(2015)
Search for third-generation scalar leptoquarks in the tt channel in proton-proton collisions at s = 8 $$ \sqrt{s}=8 $$ TeV
in Journal of High Energy Physics
Khachatryan V
(2017)
Search for Dark Matter and Supersymmetry with a Compressed Mass Spectrum in the Vector Boson Fusion Topology in Proton-Proton Collisions at sqrt[s]=8 TeV.
in Physical review letters
Khachatryan V
(2017)
Search for top quark decays via Higgs-boson-mediated flavor-changing neutral currents in pp collisions at s = 8 $$ \sqrt{s}=8 $$ TeV
in Journal of High Energy Physics
Khachatryan V
(2016)
Measurement of the top quark mass using proton-proton data at ( s ) = 7 and 8 TeV
in Physical Review D
Khachatryan V
(2016)
Measurement of the CP-violating weak phase ?s and the decay width difference ?Gs using the B s 0 ? J / ? ? ( 1020 ) decay channel in pp collisions at s = 8 TeV
in Physics Letters B
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
Khachatryan V
(2016)
Measurement of the inclusive jet cross section in pp collisions at $$\sqrt{s} = 2.76\,\text {TeV}$$ s = 2.76 TeV
in The European Physical Journal C
Khachatryan V
(2015)
Search for a Higgs boson in the mass range from 145 to 1000 GeV decaying to a pair of W or Z bosons
in Journal of High Energy Physics
Khachatryan V
(2016)
Correlations between jets and charged particles in PbPb and pp collisions at s N N = 2.76 $$ \sqrt{s_{\mathrm{NN}}}=2.76 $$ TeV
in Journal of High Energy Physics
Khachatryan V
(2015)
Search for disappearing tracks in proton-proton collisions at s = 8 $$ \sqrt{s}=8 $$ TeV
in Journal of High Energy Physics
Khachatryan V
(2015)
Measurement of the pp ? ZZ production cross section and constraints on anomalous triple gauge couplings in four-lepton final states at s = 8 TeV
in Physics Letters B
Khachatryan V
(2016)
Search for supersymmetry in electroweak production with photons and large missing transverse energy in pp collisions at s = 8 TeV
in Physics Letters B
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 the double-differential inclusive jet cross section in proton-proton collisions at [Formula: see text].
in The European physical journal. C, Particles and fields
Khachatryan V
(2017)
Search for top squark pair production in compressed-mass-spectrum scenarios in proton-proton collisions at s = 8 TeV using the aT variable
in Physics Letters B
Khachatryan V
(2015)
Search for the standard model Higgs boson produced through vector boson fusion and decaying to b b ¯
in Physical Review D
Khachatryan V
(2015)
Search for quark contact interactions and extra spatial dimensions using dijet angular distributions in proton-proton collisions at s = 8 TeV
in Physics Letters B
Khachatryan V
(2015)
Search for pair-produced resonances decaying to jet pairs in proton-proton collisions at s = 8 TeV
in Physics Letters B
Khachatryan V
(2015)
Measurement of the inclusive 3-jet production differential cross section in proton-proton collisions at 7 TeV and determination of the strong coupling constant in the TeV range.
in The European physical journal. C, Particles and fields
Khachatryan V
(2016)
Azimuthal decorrelation of jets widely separated in rapidity in pp collisions at s = 7 $$ \sqrt{s}=7 $$ TeV
in Journal of High Energy Physics
Khachatryan V
(2015)
Measurements of the ? ( 1 S ) , ? ( 2 S ) , and ? ( 3 S ) differential cross sections in pp collisions at s = 7 TeV
in Physics Letters B
Khachatryan V
(2015)
Search for neutral color-octet weak-triplet scalar particles in proton-proton collisions at s = 8 $$ \sqrt{s}=8 $$ TeV
in Journal of High Energy Physics
Khachatryan V
(2017)
Search for anomalous Wtb couplings and flavour-changing neutral currents in t-channel single top quark production in pp collisions at s = 7 $$ \sqrt{s}=7 $$ and 8 TeV
in Journal of High Energy Physics
Khachatryan V
(2017)
Evidence for collectivity in pp collisions at the LHC
in Physics Letters B
Khachatryan V
(2015)
Study of vector boson scattering and search for new physics in events with two same-sign leptons and two jets.
in Physical review letters
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
Khachatryan V
(2016)
Search for neutral MSSM Higgs bosons decaying to µ+µ- in pp collisions at s = 7 and 8 TeV
in Physics Letters B
Khachatryan V
(2015)
Measurement of the ratio of the production cross sections times branching fractions of B c ± ? J/?p ± and B± ? J/?K ± and B B c ± ? J / ? p ± p ± p ± / B B c ± ? J / ? p ± $$ \mathrm{\mathcal{B}}\left({\mathrm{B}}_{\mathrm{c}}^{\pm}\to \mathrm{J}/\psi {\pi}^{\pm }{\pi}^{\pm }{\pi}^{\mp}\right)/\mathrm{\mathcal{B}}\left({\mathrm{B}}_{\mathrm{c}}^{\pm}\to \mathrm{J}/\psi {\pi}^{\pm}\right) $$ in pp collisions at s = 7 $$ \
in Journal of High Energy Physics
Khachatryan V
(2015)
Pseudorapidity distribution of charged hadrons in proton-proton collisions at s = 13 TeV
in Physics Letters B
Keppeler S
(2016)
Particle creation and annihilation at interior boundaries: one-dimensional models
in Journal of Physics A: Mathematical and Theoretical
Kenzie M
(2016)
Search for Higgs bosons decaying into photons at CMS
in Nuclear and Particle Physics Proceedings
Kazana M
(2016)
Searches for Supersymmetry with the CMS Detector at the LHC
in Acta Physica Polonica B
Karancsi J
(2015)
Operational experience with the CMS pixel detector
in Journal of Instrumentation
Kalousis L
(2017)
The SoLid experiment
in Journal of Physics: Conference Series
Jung K
(2016)
Heavy Flavored Jet Modification at CMS
in Nuclear Physics A
Jones C
(2015)
Using the CMS Threaded Framework In A Production Environment
in Journal of Physics: Conference Series
Jo M
(2016)
CMS bottomonia results from Run I
in Nuclear Physics A
Jindariani S
(2016)
Measurements of top quark properties in top pair production and decay at the LHC using the CMS detector
in Nuclear and Particle Physics Proceedings
Jain G
(2016)
Design optimization of pixel sensors using device simulations for the phase-II CMS tracker upgrade
in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Ilten P
(2015)
Z and W Physics with Tau-Leptons at the LHC
in Nuclear and Particle Physics Proceedings
Hufnagel D
(2015)
Enabling opportunistic resources for CMS Computing Operations
in Journal of Physics: Conference Series
Hong B
(2015)
Particle correlations and their implication to collectivity in pPb and PbPb from CMS
in EPJ Web of Conferences
Hong B
(2016)
Overview of quarkonium production in heavy-ion collisions at LHC
in EPJ Web of Conferences
Hong B
(2016)
Overview of recent heavy-ion results from CMS
in Nuclear Physics A
Holzner A
(2016)
Higgs physics at CMS
in Hyperfine Interactions
Hoepfner K
(2015)
CMS upgrade and future plans
in EPJ Web of Conferences
Hits D
(2015)
The CMS Pixel Readout Chip for the Phase 1 Upgrade
in Journal of Instrumentation
Hinzmann A
(2015)
Searches for exotic new physics in CMS
in EPJ Web of Conferences
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 |