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
Rakhimov A
(2020)
Development of methods for the preparation of radiopure 82 Se sources for the SuperNEMO neutrinoless double-beta decay experiment
in Radiochimica Acta
LHCb Collaboration
(2020)
Observation of structure in the J/?-pair mass spectrum.
in Science bulletin
LHCb Collaboration
(2021)
Evidence of a J/?? structure and observation of excited ?- states in the ?b-?J/??K- decay.
in Science bulletin
LHCb Collaboration
(2022)
Measurement of the lifetimes of promptly produced Oc0 and ?c0 baryons.
in Science bulletin
Abe K
(2021)
Supernova Model Discrimination with Hyper-Kamiokande
in The Astrophysical Journal
Abe K
(2021)
Search for Neutrinos in Coincidence with Gravitational Wave Events from the LIGO-Virgo O3a Observing Run with the Super-Kamiokande Detector
in The Astrophysical Journal
Mori M
(2022)
Searching for Supernova Bursts in Super-Kamiokande IV
in The Astrophysical Journal
Machado L
(2022)
Pre-supernova Alert System for Super-Kamiokande
in The Astrophysical Journal
Harada M
(2023)
Search for Astrophysical Electron Antineutrinos in Super-Kamiokande with 0.01% Gadolinium-loaded Water
in The Astrophysical Journal Letters
Hagiwara K
(2019)
Search for Astronomical Neutrinos from Blazar TXS 0506+056 in Super-Kamiokande
in The Astrophysical Journal Letters
Ahdida C
(2022)
The SHiP experiment at the proposed CERN SPS Beam Dump Facility
in The European Physical Journal C
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
Aaij R
(2020)
Search for CP violation in $${ {{\varXi }} ^+_{c}} \rightarrow {p} { {K} ^-} { {\pi } ^+} $$ decays using model-independent techniques
in The European Physical Journal C
Aaij R
(2020)
Measurement of the $${\eta _{c}} (1S)$$ production cross-section in $$p $$ $$p $$ collisions at $$\sqrt{s} = 13$$ $$\, \text {TeV}$$
in The European Physical Journal C
Abud A
(2023)
Reconstruction of interactions in the ProtoDUNE-SP detector with Pandora
in The European Physical Journal C
Sirunyan A
(2021)
Development and validation of HERWIG 7 tunes from CMS underlying-event measurements
in The European Physical Journal C
Aaij R
(2021)
Search for heavy neutral leptons in $$W^+\rightarrow \mu ^{+}\mu ^{\pm }\, \text {jet}$$ decays
in The European Physical Journal C
Aaij R
(2023)
Search for $$D^{*}(2007)^{0} \rightarrow \mu ^{+} \mu ^{-}$$ in $$B^{-}\rightarrow \pi ^{-} \mu ^{+} \mu ^{-}$$ decays
in The European Physical Journal C
Aaij R
(2021)
Measurement of the branching fraction of the $${ {B} ^0} {\rightarrow }{ {D} ^+_{s}} { {\pi } ^-} $$ decay
in The European Physical Journal C
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
Akerib D
(2020)
The LUX-ZEPLIN (LZ) radioactivity and cleanliness control programs
in The European Physical Journal C
Abi B
(2020)
Long-baseline neutrino oscillation physics potential of the DUNE experiment DUNE Collaboration
in The European Physical Journal C
Aaij R
(2023)
Open charm production and asymmetry in pNe collisions at $$\sqrt{s_{\scriptscriptstyle {\textrm{NN}}}} = 68.5$$ $$\,\text {Ge\hspace{-1.00006pt}V}$$
in The European Physical Journal C
Ahdida C
(2020)
Measurement of the muon flux from 400 GeV/c protons interacting in a thick molybdenum/tungsten target
in The European Physical Journal C
Abi B
(2021)
Supernova neutrino burst detection with the Deep Underground Neutrino Experiment DUNE Collaboration
in The European Physical Journal C