The study of elementary particles and their interactions (Consolidated Grant 2022 - 2025)
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 characterize Higgs boson, which provides a unique window onto new physics, and the use of such measurements to search for this physics. It will also be possible to extend our searches for SUSY, dark matter, long-lived particles and other new phenomena including lepton non-universality. The LHCb experiment will offer complementary tests of the Standard Model (SM) 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. Measurements led by the group have revealed deviations from the SM, potentially indicating lepton non-universality and new physics; clarifying the situation is a high priority. The group will also be active in preparing the next generation of CMS and LHCb 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. We have produced first indications for CP violation in the neutrino sector, and future running will shed further light. To fully characterize this CP violation and its role in the observed matter-antimatter asymmetry will require the next generation detectors, DUNE and Hyper-K, in which we are also involved, with development underway. The SoLid experiment will take continue to take data and should settle the very short baseline neutrino anomaly. 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 data-taking will occur during the grant. Heavy neutrino-like particles are predicted in several new physics models and we are continuing R&D towards the SHiP experiment to search for these new particles.
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, along with preparations for the next generation detector. An exciting new venture is that of the AION experiment that will use quantum technologies to probe for ultra light dark matter, and, in time, gravitational waves.
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 those 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 characterize Higgs boson, which provides a unique window onto new physics, and the use of such measurements to search for this physics. It will also be possible to extend our searches for SUSY, dark matter, long-lived particles and other new phenomena including lepton non-universality. The LHCb experiment will offer complementary tests of the Standard Model (SM) 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. Measurements led by the group have revealed deviations from the SM, potentially indicating lepton non-universality and new physics; clarifying the situation is a high priority. The group will also be active in preparing the next generation of CMS and LHCb 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. We have produced first indications for CP violation in the neutrino sector, and future running will shed further light. To fully characterize this CP violation and its role in the observed matter-antimatter asymmetry will require the next generation detectors, DUNE and Hyper-K, in which we are also involved, with development underway. The SoLid experiment will take continue to take data and should settle the very short baseline neutrino anomaly. 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 data-taking will occur during the grant. Heavy neutrino-like particles are predicted in several new physics models and we are continuing R&D towards the SHiP experiment to search for these new particles.
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, along with preparations for the next generation detector. An exciting new venture is that of the AION experiment that will use quantum technologies to probe for ultra light dark matter, and, in time, gravitational waves.
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 those areas.
Organisations
Publications
Tumasyan A
(2024)
Measurements of azimuthal anisotropy of nonprompt D0 mesons in PbPb collisions at s NN = 5.02 TeV
in Physics Letters B
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
(2024)
Two-particle Bose-Einstein correlations and their Lévy parameters in PbPb collisions at s N N = 5.02 TeV
in Physical Review C
Taylor R
(2024)
Slow Extraction Techniques from Fixed Field Accelerators
in Journal of Physics: Conference Series
Shinoki M
(2023)
Measurement of the cosmogenic neutron yield in Super-Kamiokande with gadolinium loaded water
in Physical Review D
Sakai S
(2024)
Measurement of the neutrino-oxygen neutral-current quasielastic cross section using atmospheric neutrinos in the SK-Gd experiment
in Physical Review D
Ritchie-Yates A
(2023)
First operation of an ALICE OROC operated in high pressure $${\text {Ar-CO}}_2$$ and $$\text {Ar-CH}_4$$
in The European Physical Journal C
LHCb Collaboration
(2023)
Search for the rare decays and at LHCb
in Chinese Physics C
Ho C
(2023)
Systematic errors arising from polarization imperfections in measurements of the electron's electric dipole moment
in Physical Review Research
Hayrapetyan A
(2023)
Observation of four top quark production in proton-proton collisions at s = 13 TeV
in Physics Letters B
Hayrapetyan A
(2024)
Search for Scalar Leptoquarks Produced via t -Lepton-Quark Scattering in p p Collisions at s = 13 TeV
in Physical Review Letters
Hayrapetyan A
(2024)
Muon identification using multivariate techniques in the CMS experiment in proton-proton collisions at sqrt(s) = 13 TeV
in Journal of Instrumentation
Hayrapetyan A
(2024)
Search for new Higgs bosons via same-sign top quark pair production in association with a jet in proton-proton collisions at s = 13 TeV
in Physics Letters B
Harada M
(2023)
Search for Astrophysical Electron Antineutrinos in Super-Kamiokande with 0.01% Gadolinium-loaded Water
in The Astrophysical Journal Letters
Buchmueller O
(2023)
Large-scale atom interferometry for fundamental physics
in Contemporary Physics
Bogomilov M
(2022)
Multiple Coulomb scattering of muons in lithium hydride
in Physical Review D
Abud A
(2023)
Reconstruction of interactions in the ProtoDUNE-SP detector with Pandora
in The European Physical Journal C
Abud A
(2023)
Identification and reconstruction of low-energy electrons in the ProtoDUNE-SP detector
in Physical Review D
Abed Abud A
(2023)
Impact of cross-section uncertainties on supernova neutrino spectral parameter fitting in the Deep Underground Neutrino Experiment
in Physical Review D
Abed Abud A
(2023)
Highly-parallelized simulation of a pixelated LArTPC on a GPU
in Journal of Instrumentation
Abed Abud A
(2022)
Separation of track- and shower-like energy deposits in ProtoDUNE-SP using a convolutional neural network
in The European Physical Journal C
Abe K
(2023)
Measurements of the ? µ and ? ¯ µ -induced coherent charged pion production cross sections on C 12 by the T2K experiment
in Physical Review D
Abe K
(2023)
Measurements of neutrino oscillation parameters from the T2K experiment using 3.6×1021 protons on target.
in The European physical journal. C, Particles and fields