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
Aaij R
(2023)
$${ {J}/\psi }$$ and $${ {D}} ^0$$ production in $$\sqrt{s_{\scriptscriptstyle \text {NN}}} =68.5\,\text {GeV} $$ PbNe collisions
in The European Physical Journal C
Aalbers J
(2022)
A next-generation liquid xenon observatory for dark matter and neutrino physics
in Journal of Physics G: Nuclear and Particle Physics
Aaij R
(2023)
A study of $$C\!P$$ violation in the decays $${ {B} ^\pm } \rightarrow [{ {K} ^+} { {K} ^-} { {\uppi } ^+} { {\uppi } ^-} ]_{D} h^{\pm }$$ ($$h = K, \pi $$) and $${ {B} ^\pm } \rightarrow [{ {\uppi } ^+} { {\uppi } ^-} { {\uppi } ^+} { {\uppi } ^-} ]_{D} h^{\pm }$$
in The European Physical Journal C
Aaij R
(2023)
Amplitude analysis of B 0 ? D ¯ 0 D s + p - and B + ? D - D s + p + decays
in Physical Review D
Aaij R
(2024)
Amplitude Analysis of the B 0 ? K * 0 µ + µ - Decay
in Physical Review Letters
Abbaneo D
(2024)
An integrated flux-symmetric spectrometer-magnet system for the SND@LHC experiment upgrade
in Journal of Instrumentation
Wester T
(2024)
Atmospheric neutrino oscillation analysis with neutron tagging and an expanded fiducial volume in Super-Kamiokande I-V
in Physical Review D
Aalbers J
(2023)
Background determination for the LUX-ZEPLIN dark matter experiment
in Physical Review D
Aaij R
(2023)
Charmonium production in pNe collisions at $$\sqrt{s_{\scriptscriptstyle \text {NN}}} =68.5$$ GeV
in The European Physical Journal C
Hayrapetyan A
(2024)
Combination of Measurements of the Top Quark Mass from Data Collected by the ATLAS and CMS Experiments at s = 7 and 8 TeV
in Physical Review Letters
Abe S
(2024)
Combined Pre-supernova Alert System with KamLAND and Super-Kamiokande
in The Astrophysical Journal
Hayrapetyan A
(2024)
Combined search for electroweak production of winos, binos, higgsinos, and sleptons in proton-proton collisions at s = 13 TeV
in Physical Review D
CMS Collaboration
(2024)
Constraints on anomalous Higgs boson couplings from its production and decay using the WW channel in proton-proton collisions at s = 13 TeV.
in The European physical journal. C, Particles and fields
Aalbers J
(2024)
Constraints on Covariant Dark-Matter-Nucleon Effective Field Theory Interactions from the First Science Run of the LUX-ZEPLIN Experiment
in Physical Review Letters
Hayrapetyan A
(2025)
Constraints on the Higgs boson self-coupling from the combination of single and double Higgs boson production in proton-proton collisions at s = 13 TeV
in Physics Letters B
Aaij R
(2024)
Curvature-bias corrections using a pseudomass method
in Journal of Instrumentation
Aaij R
(2024)
Determination of short- and long-distance contributions in B 0 ? K * 0 µ + µ - decays
in Physical Review D
Mori M
(2024)
Development of a Data Overflow Protection System for Super-Kamiokande to Maximize Data from Nearby Supernovae
in Progress of Theoretical and Experimental Physics
Abed Abud A
(2024)
Doping liquid argon with xenon in ProtoDUNE Single-Phase: effects on scintillation light
in Journal of Instrumentation
Abed Abud A
(2024)
DUNE Phase II: scientific opportunities, detector concepts, technological solutions
in Journal of Instrumentation
Aaij R
(2024)
Enhanced Production of ? b 0 Baryons in High-Multiplicity p p Collisions at s = 13 TeV
in Physical Review Letters
Hayrapetyan A
(2024)
Evidence for tWZ production in proton-proton collisions at s = 13 TeV in multilepton final states
in Physics Letters B
Aaij R
(2023)
Evidence of a J/?K_{S}^{0} Structure in B^{0}?J/??K_{S}^{0} Decays.
in Physical review letters
Aalbers J
(2024)
First constraints on WIMP-nucleon effective field theory couplings in an extended energy region from LUX-ZEPLIN
in Physical Review D
Aalbers J
(2023)
First Dark Matter Search Results from the LUX-ZEPLIN (LZ) Experiment.
in Physical review letters
Anfimov N
(2024)
First demonstration of a combined light and charge pixel readout on the anode plane of a LArTPC
in Journal of Instrumentation
Abe K
(2025)
First Joint Oscillation Analysis of Super-Kamiokande Atmospheric and T2K Accelerator Neutrino Data
in Physical Review Letters
Abud A
(2024)
First measurement of the total inelastic cross section of positively charged kaons on argon at energies between 5.0 and 7.5 GeV
in Physical Review D
Aaij R
(2024)
First observation of ? b 0 ? S c ( * ) + + D ( * ) - K - decays
in Physical Review D
Aaij R
(2023)
First Observation of a Doubly Charged Tetraquark and Its Neutral Partner.
in Physical review letters
Aaij R
(2023)
First observation of the B + ? D s + D s - K + decay
in Physical Review D
Ritchie-Yates A.
(2023)
First operation of an ALICE OROC operated in high pressure Ar-CO 2 and Ar-CH 4
in European Physical Journal C
Aaij R
(2024)
Fraction of ?_{c} Decays in Prompt J/? Production Measured in pPb Collisions at sqrt[s_{NN}]=8.16 TeV.
in Physical review letters
Hayrapetyan A
(2025)
Girth and groomed radius of jets recoiling against isolated photons in lead-lead and proton-proton collisions at s NN = 5.02 TeV
in Physics Letters B
Aaij R
(2024)
Helium identification with LHCb
in Journal of Instrumentation
Abed Abud A
(2023)
Highly-parallelized simulation of a pixelated LArTPC on a GPU
in Journal of Instrumentation
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
Amsler C
(2024)
Injection and capture of antiprotons in a Penning-Malmberg trap using a drift tube accelerator and degrader foil
in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Buchmueller O
(2023)
Large-scale atom interferometry for fundamental physics
in Contemporary Physics
Marshall A
(2024)
Maximizing the physics potential of B ± ? p ± µ + µ - decays
in Physical Review D
Aaij R
(2024)
Measurement of ?_{b}^{0}, ?_{c}^{+}, and ? Decay Parameters Using ?_{b}^{0}??_{c}^{+}h^{-} Decays.
in Physical review letters
Aaij R
(2024)
Measurement of CP Violation in B^{0}??(?l^{+}l^{-})K_{S}^{0}(?p^{+}p^{-}) Decays.
in Physical review letters
Aaij R
(2024)
Measurement of CP Violation Observables in D^{+}?K^{-}K^{+}p^{+} Decays.
in Physical review letters
Aaij R
(2025)
Measurement of D 0 - D ¯ 0 mixing and search for C P violation with D 0 ? K + p - decays
in Physical Review D
Hayrapetyan A
(2024)
Measurement of Energy Correlators inside Jets and Determination of the Strong Coupling a S ( m Z )
in Physical Review Letters
Aaij R
(2024)
Measurement of forward charged hadron flow harmonics in peripheral PbPb collisions at s N N = 5.02 TeV with the LHCb detector
in Physical Review C
Aaij R
(2023)
Measurement of lepton universality parameters in B + ? K + l + l - and B 0 ? K * 0 l + l - decays
in Physical Review D
CMS Collaboration
(2025)
Measurement of multidifferential cross sections for dijet production in proton-proton collisions at s = 13 Te V.
in The European physical journal. C, Particles and fields