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
Ronchese P
(2015)
CMS results on flavour physics
in Nuclear and Particle Physics Proceedings
Flechl M
(2015)
Higgs physics: Review of recent results and prospects from ATLAS and CMS
in Journal of Physics: Conference Series
Oswald C
(2015)
Semi-inclusive studies of semileptonic B s decays at Belle
in Physical Review D
Collaboration T
(2015)
Identification of beauty and charm quark jets at LHCb
in Journal of Instrumentation
Richards S
(2015)
Non-linear centre of gravity on LHCb Vertex Locator test beam data
in Journal of Instrumentation
Khachatryan V
(2015)
Measurements of jet multiplicity and differential production cross sections of Z + jets events in proton-proton collisions at s = 7 TeV
in Physical Review D
Hong B
(2015)
Particle correlations and their implication to collectivity in pPb and PbPb from CMS
in EPJ Web of Conferences
Aaij R
(2015)
Measurement of the CP -violating phase ß in B 0 ? J / ? p + p - decays and limits on penguin effects
in Physics Letters B
Chatrchyan S
(2015)
Erratum to: Search for new physics in events with same-sign dileptons and jets in pp collisions at s $$ \sqrt{s} $$ = 8 TeV
in Journal of High Energy Physics
Khachatryan V
(2015)
Search for a charged Higgs boson in pp collisions at s = 8 $$ \sqrt{s}=8 $$ TeV
in Journal of High Energy Physics
Khachatryan V
(2015)
Search for the production of dark matter in association with top-quark pairs in the single-lepton final state in proton-proton collisions at s = 8 $$ \sqrt{s}=8 $$ TeV
in Journal of High Energy Physics
Aaij R
(2015)
Dalitz plot analysis of B 0 ? D ¯ 0 p + p - decays
in Physical Review D
CMS And LHCb Collaborations
(2015)
Observation of the rare B(s)(0) ?µ+µ- decay from the combined analysis of CMS and LHCb data.
in Nature
Malek F
(2015)
Non-SUSY Beyond Standard Model Searches: Recent Results from ATLAS and CMS
in Journal of Physics: Conference Series
Malik S
(2015)
Interplay and characterization of Dark Matter searches at colliders and in direct detection experiments
in Physics of the Dark Universe
Aaij R
(2015)
Determination of ? and - 2 ß s from charmless two-body decays of beauty mesons
in Physics Letters B
Mohammadi A
(2015)
Search for the Standard Model Higgs boson at CMS
in EPJ Web of Conferences
Venditti R
(2015)
Identification of hadronic tau decays in CMS
in EPJ Web of Conferences
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
Aaij R
(2015)
Precise measurements of the properties of the B1(5721)0,+ and B 2 * (5747)0,+ states and observation of B+,0p-,+ mass structures
in Journal of High Energy Physics
Aaij R
(2015)
Measurement of the exclusive ? production cross-section in pp collisions at s = 7 $$ \sqrt{s}=7 $$ TeV and 8 TeV
in Journal of High Energy Physics
Khachatryan V
(2015)
Search for long-lived neutral particles decaying to quark-antiquark pairs in proton-proton collisions at s = 8 TeV
in Physical Review D
Aaij R
(2015)
Quantum numbers of the X ( 3872 ) state and orbital angular momentum in its ? 0 J / ? decay
in Physical Review D
Khachatryan V
(2015)
Search for long-lived particles that decay into final states containing two electrons or two muons in proton-proton collisions at s = 8 TeV
in Physical Review D
Negrini M
(2015)
Review of physics results using jet substructure techniques in LHC Run1
in EPJ Web of Conferences
Khachatryan V
(2015)
Search for vector-like T quarks decaying to top quarks and Higgs bosons in the all-hadronic channel using jet substructure
in Journal of High Energy Physics
Hinzmann A
(2015)
Searches for exotic new physics in CMS
in EPJ Web of Conferences
Nürnberg A
(2015)
Performance studies for the new CMS Outer Tracker module concept at HL-LHC based on measurements of charge collection properties in irradiated silicon sensors
in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
De Visscher S
(2015)
Recent Standard Model results from CMS
in Journal of Physics: Conference Series
Aaij R
(2015)
Measurement of forward J/? production cross-sections in pp collisions at s = 13 $$ \sqrt{s}=13 $$ TeV
in Journal of High Energy Physics
Aaij R
(2015)
Angular analysis of the B0 ? K*0e+e- decay in the low-q2 region
in Journal of High Energy Physics
Malde S
(2015)
First determination of the CP content of D?p+p-p+p- and updated determination of the CP contents of D?p+p-p0 and D?K+K-p0
in Physics Letters B
Vignali M
(2015)
Characterization of thin irradiated epitaxial silicon sensors for the CMS phase II pixel upgrade
in Journal of Instrumentation
Korol I
(2015)
Beam test characterization of CMS silicon pixel detectors for the phase-1 upgrade
in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Romano A
(2015)
The kaon identification system in the NA62 experiment at CERN
Khachatryan V
(2015)
Measurement of the production cross section ratio s(?b2(1P))/s(?b1(1P)) in pp collisions at s = 8 TeV
in Physics Letters B
Aaij R
(2015)
Precision measurement of CP violation in B(S)(0)?J/?K+K- decays.
in Physical review letters
De Vries KJ
(2015)
The pMSSM10 after LHC run 1.
in The European physical journal. C, Particles and fields
Aaij R
(2015)
Study of C P violation in B ± ? D h ± ( h = K , p ) with the modes D ? K ± p ± p 0 , D ? p + p - p 0 and D ? K + K - p 0
in Physical Review D
Aaij R
(2015)
Study of ? - ?' mixing from measurement of B (s) 0 ? J/??(') decay rates
in Journal of High Energy Physics
Aaij R
(2015)
Measurement of the ratio of branching fractions B(B[over ¯]^{0}?D^{*+}t^{-}?[over ¯]_{t})/B(B[over ¯]^{0}?D^{*+}µ^{-}?[over ¯]_{µ}).
in Physical review letters
Aaij R
(2015)
First observation of top quark production in the forward region.
in Physical review letters
Miloševic J
(2015)
Latest Results on Anisotropy in $p$Pb and PbPb Collisions from CMS
in Acta Physica Polonica B Proceedings Supplement
Khachatryan V
(2015)
Limits on the Higgs boson lifetime and width from its decay to four charged leptons
in Physical Review D
Flórez A
(2015)
Electroweak SUSY Searches at CMS using LHC-data collected at s = 8 TeV
in Nuclear and Particle Physics Proceedings
Khachatryan V
(2015)
Measurements of differential and double-differential Drell-Yan cross sections in proton-proton collisions at [Formula: see text][Formula: see text].
in The European physical journal. C, Particles and fields
Khachatryan V
(2015)
Search for displaced supersymmetry in events with an electron and a muon with large impact parameters.
in Physical review letters
Chakraborty D
(2015)
Charged Higgs boson searches at the LHC
in Nuclear and Particle Physics Proceedings
Lobanov A
(2015)
The CMS Outer HCAL SiPM Upgrade
in Journal of Physics: Conference Series
Khachatryan V
(2015)
Search for dark matter, extra dimensions, and unparticles in monojet events in proton-proton collisions at [Formula: see text][Formula: see text].
in The European physical journal. C, Particles and fields
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 |