Experimental Particle Physics Consolidated Grant 2019-2022
Lead Research Organisation:
University of Birmingham
Department Name: School of Physics and Astronomy
Abstract
Particle physics, the quest to understand matter, forces and mass generation at the most fundamental level, is never far from the news, particularly the CERN Large Hadron Collider (LHC) and its discovery of the Higgs boson. By the start of this funding period, the LHC will be preparing for its third long run at the highest intensity and energy yet. There will also be a large data sample from previous runs under analysis. Our group has a balanced programme, exploiting the full reach of the LHC in energy and precision, as well as other aspects of the unique capabilities of the CERN accelerator complex.
Our largest activity is in the ATLAS Experiment, exploring a wide range of topics at the energy frontier including the properties of the Higgs boson and searches for physics beyond our current knowledge. We are strong on all aspects of Higgs physics and on the properties of the even more massive top quark. We will also perform measurements that test our understanding of the electroweak and strong forces. Around a billion collisions take place per second in ATLAS, whereas only a tiny fraction can be permanently recorded. Our group built, maintains and operates a major part (`L1Calo') of the custom electronics (trigger) that have to select the most interesting, reducing the data rate by a factor of 500 within two millionths of a second of collisions. As part of this funding proposal, we will commission and operate our upgraded L1Calo trigger system.
The LHC will operate for a further two decades as the world's premier energy frontier facility. An ambitious programme is underway to upgrade the accelerator in the mid-2020s, giving another huge increase in the collision rate and enabling still more sensitive searches for new phenomena. In order to cope with the event rates and radiation environments, very large-scale upgrades to the detector and its associated electronics are required. We are taking major roles in two of these. In an upgrade to the innermost charged particle tracking detector, we will be constructing intricate `silicon strip' detector modules in our `BILPA' suite of clean rooms, requiring around 8000 ultrasonic wire bonds per day. We will also be designing and constructing modules for a further upgrade to the L1Calo trigger.
Beyond ATLAS, we are an expert group on rare decays of heavy quarks. At the LHCb experiment, we are investigating the complex properties and decays of beauty quarks. Among many analysis targets, one of our specialities is the search for differences between decay rates of beauty particles involving electrons and muons, which has led to a tantalising and much-discussed apparent deviation from expectations. In the funding period, we will be studying new data and decay modes to find out whether this is a new effect or merely a very unlikely statistical fluctuation. We will also play a major role in the commissioning and operation of an important upgrade to the detector (the "RICH"), and will provide highly specialised software.
Our NA62 group studies the decays of strange particles, produced at the SPS accelerator, into ultra-rare decay modes, also to search for new physics, . Ours is one of the largest groups in the collaboration and the leading one in the UK. In the funding period, we will be busy analysing the first major NA62 data sample and contributing widely to the running of the detector, including the vital `KTAG' component that we built.
The future of particle physics also includes high statistics long baseline neutrino experiments. In the funding period, we will be applying our extensive electronics expertise to produce part of the data acquisition system for the next generation `DUNE' facility, as well as preparing for data taking.
Finally, we will continue our leadership in future plans and directions for the field and will use the BILPA for R&D into detector technologies, both for future experiments and for technology transfer, for example into Medical Physics.
Our largest activity is in the ATLAS Experiment, exploring a wide range of topics at the energy frontier including the properties of the Higgs boson and searches for physics beyond our current knowledge. We are strong on all aspects of Higgs physics and on the properties of the even more massive top quark. We will also perform measurements that test our understanding of the electroweak and strong forces. Around a billion collisions take place per second in ATLAS, whereas only a tiny fraction can be permanently recorded. Our group built, maintains and operates a major part (`L1Calo') of the custom electronics (trigger) that have to select the most interesting, reducing the data rate by a factor of 500 within two millionths of a second of collisions. As part of this funding proposal, we will commission and operate our upgraded L1Calo trigger system.
The LHC will operate for a further two decades as the world's premier energy frontier facility. An ambitious programme is underway to upgrade the accelerator in the mid-2020s, giving another huge increase in the collision rate and enabling still more sensitive searches for new phenomena. In order to cope with the event rates and radiation environments, very large-scale upgrades to the detector and its associated electronics are required. We are taking major roles in two of these. In an upgrade to the innermost charged particle tracking detector, we will be constructing intricate `silicon strip' detector modules in our `BILPA' suite of clean rooms, requiring around 8000 ultrasonic wire bonds per day. We will also be designing and constructing modules for a further upgrade to the L1Calo trigger.
Beyond ATLAS, we are an expert group on rare decays of heavy quarks. At the LHCb experiment, we are investigating the complex properties and decays of beauty quarks. Among many analysis targets, one of our specialities is the search for differences between decay rates of beauty particles involving electrons and muons, which has led to a tantalising and much-discussed apparent deviation from expectations. In the funding period, we will be studying new data and decay modes to find out whether this is a new effect or merely a very unlikely statistical fluctuation. We will also play a major role in the commissioning and operation of an important upgrade to the detector (the "RICH"), and will provide highly specialised software.
Our NA62 group studies the decays of strange particles, produced at the SPS accelerator, into ultra-rare decay modes, also to search for new physics, . Ours is one of the largest groups in the collaboration and the leading one in the UK. In the funding period, we will be busy analysing the first major NA62 data sample and contributing widely to the running of the detector, including the vital `KTAG' component that we built.
The future of particle physics also includes high statistics long baseline neutrino experiments. In the funding period, we will be applying our extensive electronics expertise to produce part of the data acquisition system for the next generation `DUNE' facility, as well as preparing for data taking.
Finally, we will continue our leadership in future plans and directions for the field and will use the BILPA for R&D into detector technologies, both for future experiments and for technology transfer, for example into Medical Physics.
Planned Impact
The Birmingham group is internationally excellent in its outreach work, introducing particle physics to wide audiences and using the LHC in particular to capture their imagination. We provide University, UK and international leadership (eg one of us held an STFC Public Engagement Fellowship). Our work with schools (ranging from spark chamber demonstrations to a Minecraft version of the LHC) provides an exciting format for engaging students and also contributed to CPD for teachers. We have been very active at exhibitions and science festivals, notably the Royal Society Summer Exhibitions. We also regularly appear in local, national and international TV, radio and printed media. The high profile developed through particle physics outreach work has resulted a measurable increase in the numbers of students applying to study physics at University.
Our `BILPA' silicon detector laboratory enables us to pursue wide-ranging knowledge exchange and technology transfer activities. Most prominent among these is `PRaVDA' and associated projects, developing precision detectors and dosimetry for use in proton beam radiotherapy, also making extensive use of the Birmingham MC40 cyclotron for detector testing and radiation tolerance characterisation. This will continue into the future, with a view to deployment in the NHS proton therapy facilities at Christie Hospital Manchester and University College Hospital London and in private centres. We have a wide-range of related start-up activities, also involving calorimetry and micropattern gaseous detectors. Those that show the most promise will be built towards full proposals to STFC or EPSRC.
Our facilities and expertise in ultrasonic wire bonding enables us to become involved in further projects with a high potential for impact. For example, we have collaborated with other departments and institutes on implantable electrical interfaces to the nervous system, which might provide amputees with significantly increased control over prosthetic limbs and a sense of touch and of limb position. Our basic R&D programme into novel silicon sensors, particularly highly radiation tolerant ones, has wide ranging potential long-term future applications. In this context, we keep in close contact with the University's Knowledge and Technology Transfer network and with the Manufacturing Technology Catapult Centre (MTC), which was set up by the regional development agency and is part-owned by the University. In a pending bid to STFC we have teamed up with the MTC to provide a local STFC innovation hub, which will be used to engage with local industry on a wide range of projects, also linking in to Birmingham's major Quantum Technology Hub centre.
Finally we are constantly seeking opportunities to engage with International Development and Global Challenges. At a small scale this happens through scientific collaborations within our experiments. Our larger-scale ambitions include replicating aspects of the BILPA laboratory in developing countries. In this context we are currently building plans with partners in Jammu, India.
Our `BILPA' silicon detector laboratory enables us to pursue wide-ranging knowledge exchange and technology transfer activities. Most prominent among these is `PRaVDA' and associated projects, developing precision detectors and dosimetry for use in proton beam radiotherapy, also making extensive use of the Birmingham MC40 cyclotron for detector testing and radiation tolerance characterisation. This will continue into the future, with a view to deployment in the NHS proton therapy facilities at Christie Hospital Manchester and University College Hospital London and in private centres. We have a wide-range of related start-up activities, also involving calorimetry and micropattern gaseous detectors. Those that show the most promise will be built towards full proposals to STFC or EPSRC.
Our facilities and expertise in ultrasonic wire bonding enables us to become involved in further projects with a high potential for impact. For example, we have collaborated with other departments and institutes on implantable electrical interfaces to the nervous system, which might provide amputees with significantly increased control over prosthetic limbs and a sense of touch and of limb position. Our basic R&D programme into novel silicon sensors, particularly highly radiation tolerant ones, has wide ranging potential long-term future applications. In this context, we keep in close contact with the University's Knowledge and Technology Transfer network and with the Manufacturing Technology Catapult Centre (MTC), which was set up by the regional development agency and is part-owned by the University. In a pending bid to STFC we have teamed up with the MTC to provide a local STFC innovation hub, which will be used to engage with local industry on a wide range of projects, also linking in to Birmingham's major Quantum Technology Hub centre.
Finally we are constantly seeking opportunities to engage with International Development and Global Challenges. At a small scale this happens through scientific collaborations within our experiments. Our larger-scale ambitions include replicating aspects of the BILPA laboratory in developing countries. In this context we are currently building plans with partners in Jammu, India.
Organisations
- University of Birmingham (Lead Research Organisation)
- Brookhaven National Laboratory (Collaboration)
- Deutsches Electronen-Synchrotron (DESY) (Collaboration)
- International Linear Collider (Collaboration)
- Gran Sasso National Laboratory (Collaboration)
- European Organization for Nuclear Research (CERN) (Collaboration)
Publications
Aaboud M
(2020)
Fluctuations of anisotropic flow in Pb+Pb collisions at $$ \sqrt{ {\mathrm{s}}_{\mathrm{NN}}} $$ = 5.02 TeV with the ATLAS detector
in Journal of High Energy Physics
Aad G
(2021)
Search for squarks and gluinos in final states with jets and missing transverse momentum using 139 fb-1 of $$ \sqrt{s} $$ = 13 TeV pp collision data with the ATLAS detector
in Journal of High Energy Physics
Aad G
(2020)
Measurement of differential cross sections for single diffractive dissociation in $$ \sqrt{s} $$ = 8 TeV pp collisions using the ATLAS ALFA spectrometer
in Journal of High Energy Physics
Aaboud M
(2020)
Measurement of J/? production in association with a W± boson with pp data at 8 TeV
in Journal of High Energy Physics
Cortina Gil E
(2020)
An investigation of the very rare $$ {K}^{+}\to {\pi}^{+}\nu \overline{\nu} $$ decay
in Journal of High Energy Physics
Aad G
(2019)
Electron and photon performance measurements with the ATLAS detector using the 2015-2017 LHC proton-proton collision data
in Journal of Instrumentation
Balogh L
(2023)
The NEWS-G detector at SNOLAB
in Journal of Instrumentation
Aaboud M
(2019)
Modelling radiation damage to pixel sensors in the ATLAS detector
in Journal of Instrumentation
Poley L
(2020)
The ABC130 barrel module prototyping programme for the ATLAS strip tracker
in Journal of Instrumentation
Aaboud M
(2019)
Electron and photon energy calibration with the ATLAS detector using 2015-2016 LHC proton-proton collision data
in Journal of Instrumentation
Dyndal M
(2020)
Mini-MALTA: radiation hard pixel designs for small-electrode monolithic CMOS sensors for the High Luminosity LHC
in Journal of Instrumentation
Collaboration T
(2019)
Resolution of the ATLAS muon spectrometer monitored drift tubes in LHC Run 2
in Journal of Instrumentation
Hara K
(2020)
Charge collection study with the ATLAS ITk prototype silicon strip sensors ATLAS17LS
in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Helling C
(2020)
Strip sensor performance in prototype modules built for ATLAS ITk
in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Blue A
(2019)
Test beam evaluation of silicon strip modules for ATLAS phase-II strip tracker upgrade
in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Ullán M
(2020)
Quality Assurance methodology for the ATLAS Inner Tracker strip sensor production
in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Unno Y
(2021)
ATLAS17LS - A large-format prototype silicon strip sensor for long-strip barrel section of ATLAS ITk strip detector
in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Mikestikova M
(2020)
Electrical characterization of surface properties of the ATLAS17LS sensors after neutron, proton and gamma irradiation
in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Fernández-Tejero J
(2020)
Humidity sensitivity of large area silicon sensors: Study and implications
in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Aad G
(2020)
Measurement of the azimuthal anisotropy of charged-particle production in Xe + Xe collisions at s N N = 5.44 TeV with the ATLAS detector
in Physical Review C
Aaboud M
(2019)
Dijet azimuthal correlations and conditional yields in p p and p + Pb collisions at s N N = 5.02 TeV with the ATLAS detector
in Physical Review C
Aad G
(2020)
Search for direct stau production in events with two hadronic t -leptons in s = 13 TeV p p collisions with the ATLAS detector
in Physical Review D
Kaewsnod A
(2022)
Study of N ( 1440 ) structure via ? * p ? N ( 1440 ) transition
in Physical Review D
Aaboud M
(2019)
Cross-section measurements of the Higgs boson decaying into a pair of t -leptons in proton-proton collisions at s = 13 TeV with the ATLAS detector
in Physical Review D
Aaboud M
(2019)
Search for heavy particles decaying into a top-quark pair in the fully hadronic final state in p p collisions at s = 13 TeV with the ATLAS detector
in Physical Review D
Arnaud Q
(2022)
Solar Kaluza-Klein axion search with NEWS-G
in Physical Review D
Aaboud M
(2019)
Properties of g ? b b ¯ at small opening angles in p p collisions with the ATLAS detector at s = 13 TeV
in Physical Review D
Aad G
(2019)
Properties of jet fragmentation using charged particles measured with the ATLAS detector in p p collisions at s = 13 TeV
in Physical Review D
Aaboud M
(2019)
Search for heavy long-lived multicharged particles in proton-proton collisions at s = 13 TeV using the ATLAS detector
in Physical Review D
Aaboud M
(2019)
Measurement of the t t ¯ Z and t t ¯ W cross sections in proton-proton collisions at s = 13 TeV with the ATLAS detector
in Physical Review D
Aaboud M
(2019)
Search for long-lived particles produced in p p collisions at s = 13 TeV that decay into displaced hadronic jets in the ATLAS muon spectrometer
in Physical Review D
Aaboud M
(2019)
Search for heavy charged long-lived particles in the ATLAS detector in 36.1 fb - 1 of proton-proton collision data at s = 13 TeV
in Physical Review D
Aad G
(2020)
Search for Magnetic Monopoles and Stable High-Electric-Charge Objects in 13 Tev Proton-Proton Collisions with the ATLAS Detector.
in Physical review letters
Aaboud M
(2019)
Observation of Electroweak Production of a Same-Sign W Boson Pair in Association with Two Jets in pp Collisions at sqrt[s]=13 TeV with the ATLAS Detector.
in Physical review letters
Aad G
(2020)
Measurement of Azimuthal Anisotropy of Muons from Charm and Bottom Hadrons in pp Collisions at sqrt[s]=13 TeV with the ATLAS Detector.
in Physical review letters
Aad G
(2021)
Medium-Induced Modification of Z-Tagged Charged Particle Yields in Pb+Pb Collisions at 5.02 TeV with the ATLAS Detector.
in Physical review letters
Aad G
(2019)
Observation of Light-by-Light Scattering in Ultraperipheral Pb+Pb Collisions with the ATLAS Detector.
in Physical review letters
Aaboud M
(2019)
Combination of Searches for Invisible Higgs Boson Decays with the ATLAS Experiment.
in Physical review letters
Aaboud M
(2019)
Comparison of Fragmentation Functions for Jets Dominated by Light Quarks and Gluons from pp and Pb+Pb Collisions in ATLAS.
in Physical review letters
Batley JR
(2019)
First observation and study of the K±?p±p0e+e- decay
in Physics Letter B788
Cortina Gil E.
(2019)
First search for K+?p+?? using the decay-in-flight technique
in Physics Letter B791
Batley J
(2019)
First observation and study of the K± ? p±p0e+e- decay
in Physics Letters B
Description | ATLAS |
Organisation | European Organization for Nuclear Research (CERN) |
Department | ATLAS Collaboration |
Country | Switzerland |
Sector | Academic/University |
PI Contribution | - Large role in construction, operation and upgrade planning of first level calorimeter trigger - Role in construction, operation and upgrade planning of Semiconductor tracker - Major contributions to data analysis and paper preparation in Higgs boson searches and discovery, top, beauty and charm quark physics and diffraction / minimum bias physics - Leadership (e.g. Prof Dave Charlton is the current spokesperson) |
Collaborator Contribution | Large international collaboration |
Impact | See elsewhere |
Description | Darkside |
Organisation | Gran Sasso National Laboratory |
Country | Italy |
Sector | Public |
PI Contribution | Collaboration in construction |
Collaborator Contribution | Collaboration |
Impact | To folllow |
Start Year | 2020 |
Description | EIC |
Organisation | Brookhaven National Laboratory |
Country | United States |
Sector | Public |
PI Contribution | Collaboration on silicon detector R&D |
Collaborator Contribution | Collaboration |
Impact | To follow |
Start Year | 2018 |
Description | H1 |
Organisation | Deutsches Electronen-Synchrotron (DESY) |
Country | Germany |
Sector | Academic/University |
PI Contribution | Leadership, data analysis and paper preparation |
Collaborator Contribution | Large International Caollaboration |
Impact | See elsewhere (particularly publications) |
Description | ILC |
Organisation | International Linear Collider |
Country | Germany |
Sector | Charity/Non Profit |
PI Contribution | Digital calorimeter design and radiation hardness tests. Physics analysis and motivation development ... particularly through involvement in the CALICE and SPIDER projects ... |
Collaborator Contribution | Large international collaboration. |
Impact | See elsewhere |
Description | LHCb |
Organisation | European Organization for Nuclear Research (CERN) |
Department | Large Hadron Collider Beauty Experiment (LHCb) |
Country | Switzerland |
Sector | Public |
PI Contribution | Development of detector simulation Support for distributed computing Data analysis and paper preparation in the area of rare beauty baryon decays |
Collaborator Contribution | Large international collaboration |
Impact | See elsewhere |
Start Year | 2011 |
Description | LHeC |
Organisation | European Organization for Nuclear Research (CERN) |
Department | LHeC Future Deep Inelastic Scattering Experiment |
Country | Switzerland |
Sector | Academic/University |
PI Contribution | Evaluation of low x physics case Various leadership and steering roles Conference talk and web page coordination |
Collaborator Contribution | Large international study group |
Impact | See elsewhere (in particular Conceptual Design Report) |
Start Year | 2006 |
Description | NA62 |
Organisation | European Organization for Nuclear Research (CERN) |
Department | NA62 Rare Kaon-Decay Experiment |
Country | Switzerland |
Sector | Academic/University |
PI Contribution | Large role in design and construction of detector, in particular the electronics and readout for the CEDAR Cherenkov detector. Leadership in preparations for data analysis, particularly in the area of searches for charged lepton flavour violation. |
Collaborator Contribution | Large international collaboration |
Impact | See elsewhere |
Description | RD51 |
Organisation | European Organization for Nuclear Research (CERN) |
Country | Switzerland |
Sector | Academic/University |
PI Contribution | Collaborators |
Collaborator Contribution | Collaboration |
Impact | To follow |
Start Year | 2020 |