The study of elementary particles and their interactions
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 cover completely new areas of 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. These experiments will make extensive use of Grid computing which the group will continue to develop and exploit, both for the LHC and for other experiments. The group will also be active in preparing the next generation of detectors for the high luminosity upgrade of the LHC.
The T2K experiment will allow us to expand our understanding of the masses and mixings in the neutrino sector, and should provide key measurements which will guide us as to whether we ultimately could see evidence of CP violation in the neutrino sector. 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 and later LUX-ZEPLIN experiments.
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 MICE experiment and 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. Understanding the LHC in terms of phenomenology is critical to comparing data to theory and the group is very active in this area.
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 cover completely new areas of 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. These experiments will make extensive use of Grid computing which the group will continue to develop and exploit, both for the LHC and for other experiments. The group will also be active in preparing the next generation of detectors for the high luminosity upgrade of the LHC.
The T2K experiment will allow us to expand our understanding of the masses and mixings in the neutrino sector, and should provide key measurements which will guide us as to whether we ultimately could see evidence of CP violation in the neutrino sector. 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 and later LUX-ZEPLIN experiments.
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 MICE experiment and 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. Understanding the LHC in terms of phenomenology is critical to comparing data to theory and the group is very active in this area.
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 many 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 A
(2019)
Search for invisible decays of a Higgs boson produced through vector boson fusion in proton-proton collisions at s = 13 TeV
in Physics Letters B
Khachatryan V
(2016)
Search for lepton flavour violating decays of heavy resonances and quantum black holes to an [Formula: see text] pair in proton-proton collisions at [Formula: see text].
in The European physical journal. C, Particles and fields
Aaij R
(2019)
Search for Lepton-Flavor Violating Decays B^{+}?K^{+}µ^{±}e^{±}.
in Physical review letters
Aaij R
(2018)
Search for lepton-flavour-violating decays of Higgs-like bosons.
in The European physical journal. C, Particles and fields
Aaij R
(2019)
Search for Lepton-Universality Violation in B^{+}?K^{+}l^{+}l^{-} Decays.
in Physical review letters
Sirunyan AM
(2018)
Search for Leptoquarks Coupled to Third-Generation Quarks in Proton-Proton Collisions at sqrt[s]=13 TeV.
in Physical review letters
Abe K
(2019)
Search for light sterile neutrinos with the T2K far detector Super-Kamiokande at a baseline of 295 km
in Physical Review D
Khachatryan V
(2016)
Search for long-lived charged particles in proton-proton collisions at s = 13 TeV
in Physical Review D
Sirunyan A
(2019)
Search for long-lived particles decaying into displaced jets in proton-proton collisions at s = 13 TeV
in Physical Review D
Sirunyan A
(2019)
Search for long-lived particles using delayed photons in proton-proton collisions at s = 13 TeV
in Physical Review D
Sirunyan A
(2019)
Search for long-lived particles using nonprompt jets and missing transverse momentum with proton-proton collisions at s = 13 TeV
in Physics Letters B
Sirunyan A
(2018)
Search for long-lived particles with displaced vertices in multijet events in proton-proton collisions at s = 13 TeV
in Physical Review D
Abe K
(2017)
Search for Lorentz and C P T violation using sidereal time dependence of neutrino flavor transitions over a short baseline
in Physical Review D
Sirunyan A
(2018)
Search for low mass vector resonances decaying into quark-antiquark pairs in proton-proton collisions at s = 13 $$ \sqrt{s}=13 $$ TeV
in Journal of High Energy Physics
Sirunyan A
(2019)
Search for low mass vector resonances decaying into quark-antiquark pairs in proton-proton collisions at s = 13 TeV
in Physical Review D
Sirunyan AM
(2019)
Search for Low-Mass Quark-Antiquark Resonances Produced in Association with a Photon at sqrt[s]=13 TeV.
in Physical review letters
Sirunyan A
(2019)
Search for low-mass resonances decaying into bottom quark-antiquark pairs in proton-proton collisions at s = 13 TeV
in Physical Review D
Sirunyan A
(2018)
Search for massive resonances decaying into W W , W Z , Z Z , q W , and q Z with dijet final states at s = 13 TeV
in Physical Review D
Khachatryan V
(2016)
Search for massive WH resonances decaying into the [Formula: see text] final state at [Formula: see text][Formula: see text].
in The European physical journal. C, Particles and fields
Sirunyan A
(2019)
Search for MSSM Higgs bosons decaying to µ+µ- in proton-proton collisions at s = 13 TeV
in Physics Letters B
Sirunyan AM
(2019)
Search for Narrow H? Resonances in Proton-Proton Collisions at sqrt[s]=13 TeV.
in Physical review letters
Khachatryan V
(2016)
Search for Narrow Resonances Decaying to Dijets in Proton-Proton Collisions at v[s]=13 TeV.
in Physical review letters
Khachatryan V
(2016)
Search for Narrow Resonances in Dijet Final States at sqrt[s]=8 TeV with the Novel CMS Technique of Data Scouting.
in Physical review letters
Sirunyan AM
(2018)
Search for Narrow Resonances in the b-Tagged Dijet Mass Spectrum in Proton-Proton Collisions at sqrt[s]=8 TeV.
in Physical review letters
Khachatryan V
(2016)
Search for neutral MSSM Higgs bosons decaying to µ+µ- in pp collisions at s = 7 and 8 TeV
in Physics Letters B
Khachatryan V
(2016)
Search for neutral resonances decaying into a Z boson and a pair of b jets or t leptons
in Physics Letters B
Abe K
(2019)
Search for neutral-current induced single photon production at the ND280 near detector in T2K
in Journal of Physics G: Nuclear and Particle Physics
Abe K
(2018)
Search for Neutrinos in Super-Kamiokande Associated with the GW170817 Neutron-star Merger
in The Astrophysical Journal Letters
Sirunyan A
(2018)
Search for new long-lived particles at s = 13 TeV
in Physics Letters B
Khachatryan V
(2016)
Search for new phenomena in monophoton final states in proton-proton collisions at s = 8 TeV
in Physics Letters B
Sirunyan A
(2018)
Search for new physics in dijet angular distributions using proton-proton collisions at $$\sqrt{s}=13\hbox {TeV}$$ and constraints on dark matter and other models
in The European Physical Journal C
Sirunyan AM
(2018)
Search for new physics in events with a leptonically decaying Z boson and a large transverse momentum imbalance in proton-proton collisions at s = 13 TeV.
in The European physical journal. C, Particles and fields
Sirunyan A
(2018)
Search for new physics in events with two soft oppositely charged leptons and missing transverse momentum in proton-proton collisions at s = 13 TeV
in Physics Letters B
Sirunyan A
(2018)
Search for new physics in final states with an energetic jet or a hadronically decaying W or Z boson and transverse momentum imbalance at s = 13 TeV
in Physical Review D
Khachatryan V
(2016)
Search for new physics in final states with two opposite-sign, same-flavor leptons, jets, and missing transverse momentum in pp collisions at s = 13 $$ \sqrt{s}=13 $$ TeV
in Journal of High Energy Physics
Aalbers J
(2023)
Search for new physics in low-energy electron recoils from the first LZ exposure
in Physical Review D
Khachatryan V
(2016)
Search for new physics in same-sign dilepton events in proton-proton collisions at [Formula: see text].
in The European physical journal. C, Particles and fields
Sirunyan AM
(2019)
Search for new physics in top quark production in dilepton final states in proton-proton collisions at s = 13 TeV.
in The European physical journal. C, Particles and fields
Khachatryan V
(2016)
Search for new physics with the M T2 variable in all-jets final states produced in pp collisions at s = 13 $$ \sqrt{s}=13 $$ TeV
in Journal of High Energy Physics
Sirunyan A
(2018)
Search for pair production of excited top quarks in the lepton + jets final state
in Physics Letters B
Khachatryan V
(2016)
Search for pair production of first and second generation leptoquarks in proton-proton collisions at s = 8 TeV
in Physical Review D
Sirunyan A
(2019)
Search for pair production of first-generation scalar leptoquarks at s = 13 TeV
in Physical Review D
Sirunyan A
(2019)
Search for pair production of second-generation leptoquarks at s = 13 TeV
in Physical Review D
Sirunyan A
(2018)
Search for pair production of vector-like quarks in the b W b ? W channel from proton-proton collisions at s = 13 TeV
in Physics Letters B
Sirunyan A
(2019)
Search for pair production of vectorlike quarks in the fully hadronic final state
in Physical Review D
Sirunyan A
(2018)
Search for pair-produced resonances decaying to quark pairs in proton-proton collisions at s = 13 TeV
in Physical Review D
Sirunyan AM
(2018)
Search for Pair-Produced Resonances Each Decaying into at Least Four Quarks in Proton-Proton Collisions at sqrt[s]=13 TeV.
in Physical review letters
Sirunyan A
(2019)
Search for pair-produced three-jet resonances in proton-proton collisions at s = 13 TeV
in Physical Review D
| Description | One of the main objectives of this grant was to support the exploitation of the LHC experiments which were taking data during the period of this grant. The CMS experiment continued to measure the Higgs particle, following its successful discovery in 2012. It was also able to cover completely new areas of parameter space in searches for SUSY and other new phenomena such as finding evidence of potential dark matter candidates. The LHCb experiment offered 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. These experiments made extensive use of Grid computing which we continued to develop and exploit, both for the LHC and for other experiments. We were also active in preparing the next generation of detectors for the high luminosity upgrade of the LHC. The T2K experiment allowed us to expand our understanding of the masses and mixings in the neutrino sector, and provided key measurements towards obtaining evidence of CP violation in the neutrino sector. One of the other missing pieces of the neutrino puzzle is whether the neutrino is its own antiparticle. We prepared the SuperNEMO experiment to attempt to determine if the neutrino is a Majorana particle and first data-taking occurred during the grant. Heavy neutrino-like particles are predicted in several new physics models and we started preparations for the SHiP experiment to search for these new particles. The group was 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 was prepared to search for this process. Similarly, a measurable electric dipole moment for the electron could only arise through new physics and the eEDM experiment continued 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 we continued to search for direct evidence of a dark matter candidate through the LUX and later LUX-ZEPLIN experiments. Accelerators to produce muon beams will be needed for future neutrino and muon collider experiments. The group continued its research in this area through the MICE experiment and nuSTORM studies. Proton beams also have potential applications for other scientific fields and for healthcare, and we studied how to apply these techniques in these areas. Understanding the LHC in terms of phenomenology is critical to comparing data to theory and we were very active in this area. |
| Exploitation Route | The knowledge gained will directly benefit future researchers in particle physics, astronomy and cosmology. |
| Sectors | Digital/Communication/Information Technologies (including Software) Education Healthcare |
| Description | ZEPLIN-III detector exhibit & Public Lecture at "Whitby & the Cosmos" exhibition, Whitby, UK |
| Form Of Engagement Activity | Participation in an activity, workshop or similar |
| Part Of Official Scheme? | No |
| Geographic Reach | Regional |
| Primary Audience | Public/other audiences |
| Results and Impact | The ZEPLIN-III dark matter detector, which operated at the Boulby Underground Laboratory between 2007 and 2011, was adapted for public display at Imperial College London and donated to the Whitby Museum in late 2018 -- where it became the centrepiece of the topical exhibition "Whitby & the Cosmos". I gave a public lecture entitled "Searching for WIMPs under the Moors" on 15 Feb 2019 to open the event. The ZEPLIN-III instrument will be moved to the permanent collection of the Museum once the exhibition comes to an end in July 2019. Both the exhibition and the public lecture were widely publicised in the local media. The Museum received further support from the Royal Society for this event. The exhibition will receive many thousand of visitors over the coming months. We had the opportunity to donate the instrument to the Science Museum in London, but we chose the Whitby Museum instead to honour a town which hosted the ZEPLIN collaboration for two decades. |
| Year(s) Of Engagement Activity | 2019 |
| URL | https://whitbymuseum.org.uk/2019/01/09/whitby-and-the-cosmos/ |