The study of elementary particles and their interactions (Consolidated Grant 2019 - 2022)
Lead Research Organisation:
Imperial College London
Department Name: Physics
Abstract
This grant is to continue the group's programme of investigation into the properties of elementary particles and the fundamental forces of nature.
One of the main objectives of this grant will be to support the exploitation of the LHC experiments which will be taking data during the period of this grant. The CMS experiment will continue to measure the Higgs particle, following its successful discovery in 2012. It will also be able to extend the parameter space in searches for SUSY and other new phenomena such as finding evidence of potential dark matter candidates. The LHCb experiment will offer complementary tests of the Standard Model and beyond with the ability to look for extremely rare decays in flavour physics and to measure CP asymmetries in the decays of B mesons, both of which are sensitive to contributions from new physics. The group will also be active in preparing the next generation of detectors for the high luminosity upgrade of the LHC.
The T2K long baseline neutrino experiment will allow us to expand our understanding of the masses and mixings in the neutrino sector, and should provide key indications of CP violation in the neutrino sector. The SoLid experiment will take data throughout the grant period and should settle the very short baseline neutrino anomoly. One of the other missing pieces of the neutrino puzzle is whether the neutrino is its own antiparticle. We are preparing the SuperNEMO experiment to attempt to determine if the neutrino is a Majorana particle and first data-taking will occur during the grant. Heavy neutrino-like particles are predicted in several new physics models and we are starting preparations for the SHiP experiment to search for these new particles.
The group will be active in several experiments specifically searching for new physics. Direct conversion of muons to electrons is heavily suppressed in the Standard Model so any observation of this process would be a major discovery. The COMET experiment is searching for this process and will take data during the grant. Similarly, a measurable electric dipole moment for the electron could only arise through new physics and the eEDM experiment will continue to push down the limits for such an effect. Around a quarter of the Universe is composed of dark matter and its nature is unknown. This has so far remained undetected in the laboratory and the group will continue its activity in searching for direct evidence of a dark matter candidate through the LUX-ZEPLIN experiment.
Accelerators to produce muon beams will be needed for future neutrino and muon collider experiments. The group is continuing its research in this area through the nuSTORM studies. Proton beams also have potential applications for other scientific fields and for healthcare, and the group is studying how to apply these techniques in these areas.
One of the main objectives of this grant will be to support the exploitation of the LHC experiments which will be taking data during the period of this grant. The CMS experiment will continue to measure the Higgs particle, following its successful discovery in 2012. It will also be able to extend the parameter space in searches for SUSY and other new phenomena such as finding evidence of potential dark matter candidates. The LHCb experiment will offer complementary tests of the Standard Model and beyond with the ability to look for extremely rare decays in flavour physics and to measure CP asymmetries in the decays of B mesons, both of which are sensitive to contributions from new physics. The group will also be active in preparing the next generation of detectors for the high luminosity upgrade of the LHC.
The T2K long baseline neutrino experiment will allow us to expand our understanding of the masses and mixings in the neutrino sector, and should provide key indications of CP violation in the neutrino sector. The SoLid experiment will take data throughout the grant period and should settle the very short baseline neutrino anomoly. One of the other missing pieces of the neutrino puzzle is whether the neutrino is its own antiparticle. We are preparing the SuperNEMO experiment to attempt to determine if the neutrino is a Majorana particle and first data-taking will occur during the grant. Heavy neutrino-like particles are predicted in several new physics models and we are starting preparations for the SHiP experiment to search for these new particles.
The group will be active in several experiments specifically searching for new physics. Direct conversion of muons to electrons is heavily suppressed in the Standard Model so any observation of this process would be a major discovery. The COMET experiment is searching for this process and will take data during the grant. Similarly, a measurable electric dipole moment for the electron could only arise through new physics and the eEDM experiment will continue to push down the limits for such an effect. Around a quarter of the Universe is composed of dark matter and its nature is unknown. This has so far remained undetected in the laboratory and the group will continue its activity in searching for direct evidence of a dark matter candidate through the LUX-ZEPLIN experiment.
Accelerators to produce muon beams will be needed for future neutrino and muon collider experiments. The group is continuing its research in this area through the nuSTORM studies. Proton beams also have potential applications for other scientific fields and for healthcare, and the group is studying how to apply these techniques in these areas.
Planned Impact
While much of the research described in this grant is exploring fundamental questions where the immediate impact implications of discoveries can take decades to unfold, there are several examples of areas where technology developed in the pursuit of discoveries can have a more immediate impact. The group has potential impact in several key areas; training, outreach, transfer of HEP technology and ideas, and transfer and development of accelerator technology. These reach a diverse audience ranging from schoolchildren to cancer practitioners to neutron source users. See the submitted "Pathways to Impact" document for further details.
Organisations
Publications
Sirunyan AM
(2020)
Study of central exclusive production in proton-proton collisions at s = 5.02 and 13TeV.
in The European physical journal. C, Particles and fields
Sirunyan AM
(2020)
Observation of the B_{s}^{0}?X(3872)? Decay.
in Physical review letters
Sirunyan AM
(2022)
Evidence for X(3872) in Pb-Pb Collisions and Studies of its Prompt Production at sqrt[s_{NN}]=5.02 TeV.
in Physical review letters
Sirunyan AM
(2021)
Precision luminosity measurement in proton-proton collisions at s = 13 TeV in 2015 and 2016 at CMS.
in The European physical journal. C, Particles and fields
Sirunyan AM
(2021)
Measurements of angular distance and momentum ratio distributions in three-jet and Z + two-jet final states in pp collisions.
in The European physical journal. C, Particles and fields
Sirunyan AM
(2020)
Evidence for Top Quark Production in Nucleus-Nucleus Collisions.
in Physical review letters
Sirunyan AM
(2019)
Combined measurements of Higgs boson couplings in proton-proton collisions at s = 13 Te .
in The European physical journal. C, Particles and fields
Sirunyan AM
(2020)
Measurement of single-diffractive dijet production in proton-proton collisions at s = 8 Te with the CMS and TOTEM experiments.
in The European physical journal. C, Particles and fields
Sirunyan AM
(2020)
Constraints on the ?_{c1} versus ?_{c2} Polarizations in Proton-Proton Collisions at sqrt[s]=8 TeV.
in Physical review letters
Sirunyan AM
(2020)
Measurement of differential cross sections and charge ratios for t-channel single top quark production in proton-proton collisions at s = 13 Te .
in The European physical journal. C, Particles and fields
Sirunyan AM
(2021)
Measurement of the Higgs boson production rate in association with top quarks in final states with electrons, muons, and hadronically decaying tau leptons at s = 13 TeV.
in The European physical journal. C, Particles and fields
Sirunyan AM
(2020)
Measurement of the Jet Mass Distribution and Top Quark Mass in Hadronic Decays of Boosted Top Quarks in pp Collisions at sqrt[s]=13 TeV.
in Physical review letters
Sirunyan AM
(2020)
Measurements of tt[over ¯]H Production and the CP Structure of the Yukawa Interaction between the Higgs Boson and Top Quark in the Diphoton Decay Channel.
in Physical review letters
Sirunyan AM
(2020)
Mixed higher-order anisotropic flow and nonlinear response coefficients of charged particles in PbPb collisions at s NN = 2.76 and 5.02 TeV.
in The European physical journal. C, Particles and fields
Sirunyan AM
(2021)
Observation of a New Excited Beauty Strange Baryon Decaying to ?_{b}^{-}p^{+}p^{-}.
in Physical review letters
Sirunyan AM
(2020)
Search for physics beyond the standard model in events with jets and two same-sign or at least three charged leptons in proton-proton collisions at s = 13 TeV.
in The European physical journal. C, Particles and fields
Takenaka A
(2020)
Search for proton decay via p ? e + p 0 and p ? ยต + p 0 with an enlarged fiducial volume in Super-Kamiokande I-IV
in Physical Review D
Tanaka M
(2020)
Search for proton decay into three charged leptons in 0.37 megaton-years exposure of the Super-Kamiokande
in Physical Review D
Taylor R
(2023)
Slow extraction modelling for NIMMS hadron therapy synchrotrons
in Journal of Physics: Conference Series
Taylor R
(2024)
Slow Extraction Techniques from Fixed Field Accelerators
in Journal of Physics: Conference Series
The LZ Collaboration
(2021)
Projected sensitivities of the LUX-ZEPLIN (LZ) experiment to new physics via low-energy electron recoils
Tumasyan A
(2022)
Search for W? resonances in proton-proton collisions at s = 13 TeV using hadronic decays of Lorentz-boosted W bosons
in Physics Letters B
Tumasyan A
(2021)
Measurements of the Electroweak Diboson Production Cross Sections in Proton-Proton Collisions at sqrt[s]=5.02 TeV Using Leptonic Decays.
in Physical review letters
Tumasyan A
(2021)
Measurement of the electroweak production of Z ? and two jets in proton-proton collisions at s = 13 TeV and constraints on anomalous quartic gauge couplings
in Physical Review D
Tumasyan A
(2022)
Search for long-lived particles decaying to leptons with large impact parameter in proton-proton collisions at s = 13 Te .
in The European physical journal. C, Particles and fields
Tumasyan A
(2021)
Search for Long-Lived Particles Decaying in the CMS End Cap Muon Detectors in Proton-Proton Collisions at sqrt[s]=13 TeV.
in Physical review letters
Tumasyan A
(2024)
Two-particle Bose-Einstein correlations and their Lévy parameters in PbPb collisions at s N N = 5.02 TeV
in Physical Review C
Tumasyan A
(2022)
Measurement of W ± ? differential cross sections in proton-proton collisions at s = 13 TeV and effective field theory constraints
in Physical Review D
Tumasyan A
(2022)
Measurement of the Inclusive and Differential Higgs Boson Production Cross Sections in the Decay Mode to a Pair of t Leptons in pp Collisions at sqrt[s]=13 TeV.
in Physical review letters
Tumasyan A
(2024)
Study of azimuthal anisotropy of ?(1S) mesons in pPb collisions at s NN = 8.16 TeV
in Physics Letters B
Tumasyan A
(2021)
Combined searches for the production of supersymmetric top quark partners in proton-proton collisions at s = 13 Te .
in The European physical journal. C, Particles and fields
Tumasyan A
(2022)
Fragmentation of jets containing a prompt J/? meson in PbPb and pp collisions at s NN = 5.02 TeV
in Physics Letters B
Tumasyan A
(2024)
Measurements of azimuthal anisotropy of nonprompt D0 mesons in PbPb collisions at s NN = 5.02 TeV
in Physics Letters B
Uchida K
(2019)
Results from the CBC3 readout ASIC for CMS 2S-modules
in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Wass P
(2023)
Simulating the charging of isolated free-falling masses from TeV to eV energies: Detailed comparison with LISA Pathfinder results
in Physical Review D
Zhang C
(2022)
Quantum Computation in a Hybrid Array of Molecules and Rydberg Atoms
in PRX Quantum
Zuber K
(2020)
COMET Phase-I technical design report
in Progress of Theoretical and Experimental Physics