Bristol Particle Physics Consolidated Grant 2012-17
Lead Research Organisation:
University of Bristol
Department Name: Physics
Abstract
The University of Bristol proposes to carry out research into the fundamental laws of space, time, matter and force. The current theoretical description of physics at the smallest scales, the Standard Model, is known not to hold at energies greater than around 1TeV. By carrying out experiments at particle colliders, we will observe how and when the Standard Model breaks down; discover new models which accurate describe physics at these scales; measure the parameters of these models; and investigate their significance for cosmology and the study of the large-scale universe. This work will be carried out using a wide range of different experiments and studies.
The experimental data supporting this programme will be obtained using the CMS and LHCb experiments at the CERN LHC, and the NA62 experiment at the CERN SPS. We will use these detectors to work both at the energy frontier, with sensitivity to new heavy particles, and the precision frontier, comparing the largest ever experimental data sets with the predictions of the Standard Model. Having built important components of these experiments, we will continue to operate and maintain the apparatus, and design and install upgraded equipment to further enhance their capabilities.
We will design and construct new particle detectors and instruments, optimised for sensitivity, performance and cost. Along with new techniques we will develop in computing and data analysis, this technology will be used in the future to build new experiments at future colliders, and to solve practical problems in the security, medical and environmental sectors.
The results of our research will be publicised via talks, media involvement and events, in order to enhance public understanding and appreciation of science. We will engage with schools wherever possible, in order to ensure the continued take-up of science subjects at school and university level.
The experimental data supporting this programme will be obtained using the CMS and LHCb experiments at the CERN LHC, and the NA62 experiment at the CERN SPS. We will use these detectors to work both at the energy frontier, with sensitivity to new heavy particles, and the precision frontier, comparing the largest ever experimental data sets with the predictions of the Standard Model. Having built important components of these experiments, we will continue to operate and maintain the apparatus, and design and install upgraded equipment to further enhance their capabilities.
We will design and construct new particle detectors and instruments, optimised for sensitivity, performance and cost. Along with new techniques we will develop in computing and data analysis, this technology will be used in the future to build new experiments at future colliders, and to solve practical problems in the security, medical and environmental sectors.
The results of our research will be publicised via talks, media involvement and events, in order to enhance public understanding and appreciation of science. We will engage with schools wherever possible, in order to ensure the continued take-up of science subjects at school and university level.
Planned Impact
The key beneficiaries of the proposed research programme, and the benefits they are likely to obtain, can be classified as follows:
- The results obtained and techniques developed in this programme will be of direct benefit in the international fields of experimental and theoretical particle physics and astronomy. The research outputs will directly address outstanding questions in these fields.
- Other academic disciplines will benefit directly and indirectly through access to instruments and techniques developed in this research programme. There is also potential impact upon private-sector companies for commercialisation of detector and computing technology. Examples of areas where impact has already been demonstrated include the security and medical instrumentation sectors. UK industry will also benefit through contracts for specialized detectors and electronic / mechanical assemblies.
- The results from high-profile particle physics experiments provide both a significant cultural impact for the general public, and an impact on the science agenda of national and regional government. Engagement of both the general public and policy makers is an explicit aim of this programme, with routes detailed in the pathways to impact document.
- There is a particular impact upon schools and universities, due to the postitive effect of experimental particle physics upon take up of science courses at GCSE, A-Level and degree levels. The results obtained as part of this research programme will help to continue the 'LHC effect', with physics becoming an increasingly popular subject.
- The technological and organisational demands of experimental particle physics have a demonstrated impact upon culture and best practice in universities and academia in general, and will continue to do so. For instance, through the move to open electronic repositories and open publishing; through the use of networking and distributed research in many disciplines; and through well planned and high profile public engagement exercises.
- The results obtained and techniques developed in this programme will be of direct benefit in the international fields of experimental and theoretical particle physics and astronomy. The research outputs will directly address outstanding questions in these fields.
- Other academic disciplines will benefit directly and indirectly through access to instruments and techniques developed in this research programme. There is also potential impact upon private-sector companies for commercialisation of detector and computing technology. Examples of areas where impact has already been demonstrated include the security and medical instrumentation sectors. UK industry will also benefit through contracts for specialized detectors and electronic / mechanical assemblies.
- The results from high-profile particle physics experiments provide both a significant cultural impact for the general public, and an impact on the science agenda of national and regional government. Engagement of both the general public and policy makers is an explicit aim of this programme, with routes detailed in the pathways to impact document.
- There is a particular impact upon schools and universities, due to the postitive effect of experimental particle physics upon take up of science courses at GCSE, A-Level and degree levels. The results obtained as part of this research programme will help to continue the 'LHC effect', with physics becoming an increasingly popular subject.
- The technological and organisational demands of experimental particle physics have a demonstrated impact upon culture and best practice in universities and academia in general, and will continue to do so. For instance, through the move to open electronic repositories and open publishing; through the use of networking and distributed research in many disciplines; and through well planned and high profile public engagement exercises.
Organisations
Publications
Chatrchyan S
(2013)
Measurement of the W + W - and ZZ production cross sections in pp collisions at s = 8 TeV
in Physics Letters B
Chatrchyan S
(2012)
Search for heavy, top-like quark pair production in the dilepton final state in pp collisions at s = 7 TeV
in Physics Letters B
Chatrchyan S
(2014)
Inclusive search for a vector-like T quark with charge 2 3 in pp collisions at s = 8 TeV
in Physics Letters B
Chatrchyan S
(2012)
Search for physics beyond the standard model in events with a Z boson, jets, and missing transverse energy in pp collisions at s = 7 TeV
in Physics Letters B
Chatrchyan S
(2012)
Observation of sequential ? suppression in PbPb collisions.
in Physical review letters
Chatrchyan S
(2014)
Search for invisible decays of Higgs bosons in the vector boson fusion and associated ZH production modes.
in The European physical journal. C, Particles and fields
Chatrchyan S
(2012)
Combined search for the quarks of a sequential fourth generation
in Physical Review D
Chatrchyan S
(2013)
Event shapes and azimuthal correlations in Z + jets events in pp collisions at s = 7 TeV
in Physics Letters B
Chatrchyan S
(2013)
Search for top-squark pair production in the single-lepton final state in pp collisions at $\sqrt{s}=8\ \mathrm{TeV}$
in The European Physical Journal C
Chatrchyan S
(2014)
Observation of the associated production of a single top quark and a W boson in pp collisions at sqrt[s] = 8 TeV.
in Physical review letters
Chatrchyan S
(2012)
Study of W boson production in PbPb and pp collisions at s NN = 2.76 TeV
in Physics Letters B
Chatrchyan S
(2013)
Search for gluino mediated bottom- and top-squark production in multijet final states in pp collisions at 8 TeV
in Physics Letters B
Chatrchyan S
(2013)
Publisher's Note: Measurements of differential jet cross sections in proton-proton collisions at s = 7 TeV with the CMS detector [Phys. Rev. D 87 , 112002 (2013)]
in Physical Review D
Chatrchyan S
(2012)
Search for heavy lepton partners of neutrinos in proton-proton collisions in the context of the type III seesaw mechanism
in Physics Letters B
Chatrchyan S
(2014)
Measurement of jet fragmentation in PbPb and p p collisions at s NN = 2.76 TeV
in Physical Review C
Chatrchyan S
(2014)
Erratum: Measurement of the $ \mathrm{t}\overline{\mathrm{t}} $ production cross section in the dilepton channel in pp collisions at $ \sqrt{s} $ = 8 TeV
in Journal of High Energy Physics
Chatrchyan S
(2015)
Erratum: Evidence of b -Jet Quenching in PbPb Collisions at s N N = 2.76 TeV [Phys. Rev. Lett. 113 , 132301 (2014)]
in Physical Review Letters
Chatrchyan S
(2014)
Modification of jet shapes in PbPb collisions at s NN = 2.76 TeV
in Physics Letters B
Chatrchyan S
(2014)
Search for new physics in events with same-sign dileptons and jets in pp collisions at $ \sqrt{s} $ = 8 TeV
in Journal of High Energy Physics
Chatrchyan S
(2014)
Studies of azimuthal dihadron correlations in ultra-central PbPb collisions at $ \sqrt{ {{s_{NN }}}} $ =2.76 TeV
in Journal of High Energy Physics
Chatrchyan S
(2014)
Study of double parton scattering using W + 2-jet events in proton-proton collisions at $ \sqrt{s} $ = 7 TeV
in Journal of High Energy Physics
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
Chatrchyan S
(2014)
Measurement of the muon charge asymmetry in inclusive p p ? W + X production at s = 7 TeV and an improved determination of light parton distribution functions
in Physical Review D
Chatrchyan S
(2013)
Measurement of the ? ( 1 S ) , ? ( 2 S ) , and ? ( 3 S ) cross sections in pp collisions at s = 7 TeV
in Physics Letters B
Chatrchyan S
(2012)
Study of the Dijet mass spectrum in pp ? W+jets events at sqrt[s] = 7 TeV.
in Physical review letters
Chatrchyan S
(2014)
Measurement of pseudorapidity distributions of charged particles in proton-proton collisions at $$\sqrt{s} = 8$$ s = 8 TeV by the CMS and TOTEM experiments
in The European Physical Journal C
Chatrchyan S
(2014)
Search for W W ? and W Z ? production and constraints on anomalous quartic gauge couplings in p p collisions at s = 8 TeV
in Physical Review D
Chatrchyan S
(2013)
Search for heavy narrow dilepton resonances in pp collisions at s = 7 TeV and s = 8 TeV
in Physics Letters B
Chatrchyan S
(2013)
Study of the mass and spin-parity of the Higgs boson candidate via its decays to Z boson pairs.
in Physical review letters
Chatrchyan S
(2014)
Measurement of the production cross sections for a Z boson and one or more b jets in pp collisions at s $$ \sqrt{s} $$ = 7 TeV
in Journal of High Energy Physics
Chatrchyan S
(2013)
Measurement of the prompt J / ? and ? ( 2 S ) polarizations in pp collisions at s = 7 TeV
in Physics Letters B
Chatrchyan S
(2014)
Determination of the top-quark pole mass and strong coupling constant from the t t ¯ production cross section in pp collisions at s = 7 TeV
in Physics Letters B
Chatrchyan S
(2014)
Measurement of the production cross section for a W boson and two b jets in pp collisions at s = 7 TeV
in Physics Letters B
Chatrchyan S
(2012)
Search for high-mass resonances decaying into t-lepton pairs in pp collisions at s = 7 TeV
in Physics Letters B
Chatrchyan S
(2014)
Search for top squark and Higgsino production using diphoton Higgs boson decays.
in Physical review letters
Chatrchyan S
(2012)
Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
in Physics Letters B
Chatrchyan S
(2013)
Search for a non-standard-model Higgs boson decaying to a pair of new light bosons in four-muon final states
in Physics Letters B
Chatrchyan S
(2014)
Measurement of the $ t\overline{t} $ production cross section in the dilepton channel in pp collisions at $ \sqrt{s} $ = 8 TeV
in Journal of High Energy Physics
Chatrchyan S
(2012)
Search for new physics with same-sign isolated dilepton events with jets and missing transverse energy.
in Physical review letters
Chatrchyan S
(2012)
Search for supersymmetry in events with b -quark jets and missing transverse energy in p p collisions at 7 TeV
in Physical Review D
Chatrchyan S
(2014)
Measurements of tt spin correlations and top-quark polarization using dilepton final states in pp collisions at sqrt[s]=7 TeV.
in Physical review letters
Chatrchyan S
(2012)
Measurement of the top-quark mass in $\mathrm{t}\overline{\mathrm{t}}$ events with dilepton final states in pp collisions at $\sqrt{s}=7\ \mbox{TeV}$
in The European Physical Journal C
Chatrchyan S
(2013)
Search for a Higgs boson decaying into a b-quark pair and produced in association with b quarks in proton-proton collisions at 7 TeV
in Physics Letters B
Chatrchyan S
(2013)
Measurement of neutral strange particle production in the underlying event in proton-proton collisions at s = 7 TeV
in Physical Review D
Chatrchyan S
(2013)
Measurement of the Bs(0)?µ+ µ- branching fraction and search for B(0)?µ+ µ- with the CMS experiment.
in Physical review letters
Chatrchyan S
(2013)
Searches for Higgs bosons in pp collisions at s = 7 and 8 TeV in the context of four-generation and fermiophobic models
in Physics Letters B
Chatrchyan S
(2014)
Measurement of the W ? and Z ? inclusive cross sections in p p collisions at s = 7 TeV and limits on anomalous triple gauge boson couplings
in Physical Review D
Chatrchyan S
(2013)
Search for narrow resonances using the dijet mass spectrum in p p collisions at s = 8 TeV
in Physical Review D
Chatrchyan S
(2014)
Evidence of b-jet quenching in PbPb collisions at v(s(NN))=2.76 TeV.
in Physical review letters
Chatrchyan S
(2013)
Angular analysis and branching fraction measurement of the decay B 0 ? K ? 0 µ + µ -
in Physics Letters B
| Description | This award supported several key developments in particle physics. Most notably, early in the funding period the Higgs boson was discovered and considerable effort was then spent to precisely determine its properties to see if it is really exactly as predicted. There were a host of other measurements at various experiments, pinning down details of the standard model and trying to spot deviations. Finally, good progress was made in "spinning out" particle physics technology into other areas, including the development of systems for scanning for dense materials (with security and other applications) as well as for radiotherapy beam monitoring. |
| Exploitation Route | The group is continuing to pursue these lines of research with subsequent grants. Other particle physics groups have also noted our results. And companies are working with us to develop commercial products based on our knowledge exchange. |
| Sectors | Aerospace Defence and Marine Digital/Communication/Information Technologies (including Software) Education Healthcare |
| Description | Research conducted in muon tomography is being investigated by homeland security agencies, the nuclear industry and others as a means of remote, non-invasive imaging. Research in radiotherapy beam monitoring has led to commercial products. |
| First Year Of Impact | 2017 |
| Sector | Aerospace, Defence and Marine,Digital/Communication/Information Technologies (including Software),Healthcare,Security and Diplomacy |
| Impact Types | Societal Economic |