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
Whitbeck A
(2015)
The CMS central hadron calorimeter DAQ system upgrade
in Journal of Instrumentation
Rammensee M
(2015)
SUSY searches: Recent results from ATLAS and CMS
in Journal of Physics: Conference Series
Khachatryan V
(2015)
Comparison of the Z/? * + jets to ? + jets cross sections in pp collisions at s = 8 $$ \sqrt{s}=8 $$ TeV
in Journal of High Energy Physics
Künsken A
(2015)
MPPC photon sensor operational experience in CMS
in Journal of Physics: Conference Series
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 decay B ? s 0 ? ? ( 2 S ) K + p -
in Physics Letters B
Khachatryan V
(2015)
Searches for supersymmetry using the M T2 variable in hadronic events produced in pp collisions at 8 TeV
in Journal of High Energy Physics
Khachatryan V
(2015)
Search for physics beyond the standard model in final states with a lepton and missing transverse energy in proton-proton collisions at s = 8 TeV
in Physical Review D
Khachatryan V
(2015)
Constraints on the spin-parity and anomalous H V V couplings of the Higgs boson in proton collisions at 7 and 8 TeV
in Physical Review D
Aaij R
(2015)
Search for the rare decays B 0 ? J / ? ? and B s 0 ? J / ? ?
in Physical Review D
Khachatryan V
(2015)
Measurement of diffractive dissociation cross sections in p p collisions at s = 7 TeV
in Physical Review D
Aaij R
(2015)
Study of B - ? D K - p + p - and B - ? D p - p + p - decays and determination of the CKM angle ?
in Physical Review D
Aaij R
(2015)
Measurement of CP Violation in B0?J/?K{S}^{0} Decays.
in Physical review letters
Aaij R
(2015)
Study of the rare B s 0 and B0 decays into the p+p-µ+µ- final state
in Physics Letters B
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
Aaij R
(2015)
Measurement of the time-integrated CP asymmetry in D 0 ? K S 0 K S 0 decays
in Journal of High Energy Physics
Filipovic N
(2015)
Bottomonium measurements in pp, pPb and PbPb using the CMS detector
in Journal of Physics: Conference Series
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
Gras P
(2015)
The CMS electromagnetic calorimeter barrel upgrade for High-Luminosity LHC
in Journal of Physics: Conference Series
Mankel R
(2015)
Search for Higgs bosons beyond the Standard Model
in EPJ Web of Conferences
Tosi S
(2015)
Results on top physics by CMS
in EPJ Web of Conferences
Alves G
(2015)
CMS results on exclusive and diffractive production
Nasr-Storey S
(2015)
Neutron and X-ray irradiation of silicon based Mach-Zehnder modulators
in Journal of Instrumentation
Quittnat M
(2015)
FLUKA studies of hadron-irradiated scintillating crystals for calorimetry at the High-Luminosity LHC
in Journal of Physics: Conference Series
Larrea C
(2015)
IPbus: a flexible Ethernet-based control system for xTCA hardware
in Journal of Instrumentation
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
Costantini S
(2015)
Radiation background with the CMS RPCs at the LHC
in Journal of Instrumentation
Karancsi J
(2015)
Operational experience with the CMS pixel detector
in Journal of Instrumentation
Khachatryan V
(2015)
Search for disappearing tracks in proton-proton collisions at s = 8 $$ \sqrt{s}=8 $$ TeV
in Journal of High Energy Physics
Chen Z
(2015)
Probing novel long-range correlation phenomena in pPb collisions with identified particles at CMS
in Journal of Physics: Conference Series
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
Beck L
(2015)
Probing top-philic sgluons with LHC Run I data
in Physics Letters B
Charaf O
(2015)
Search for heavy resonances at CMS
in Journal of Physics: Conference Series
Khachatryan V
(2015)
Search for the standard model Higgs boson produced through vector boson fusion and decaying to b b ¯
in Physical Review D
Dünser M
(2015)
Measurements of the top-quark mass and properties at CMS
in Journal of Physics: Conference Series
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
Sauvan J
(2015)
Performance and upgrade of the CMS electron and photon trigger for Run 2
in Journal of Physics: Conference Series
Aaij R
(2015)
Evidence for the Strangeness-Changing Weak Decay ?_{b}^{-}??_{b}^{0}p^{-}.
in Physical review letters
Shukla P
(2015)
Overview of quarkonia and heavy flavour measurements by CMS
in Proceedings of the Indian National Science Academy
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
Aaij R
(2015)
Measurement of the B s 0 ? ?? branching fraction and search for the decay B 0 ? ??
in Journal of High Energy Physics
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
Aaij R
(2015)
First measurement of the differential branching fraction and CP asymmetry of the B ± ? p ± µ + µ - decay
in Journal of High Energy Physics
Nayak M
(2015)
First determination of the CP content of D ? p + p - p 0 and D ? K + K - p 0
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
Aaij R
(2015)
Measurement of the lifetime of the B c + meson using the B c + ? J / ? p + decay mode
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
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 |