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
Khachatryan V
(2016)
Measurement of the charge asymmetry in top quark pair production in p p collisions at s = 8 TeV using a template method
in Physical Review D
Aaij R
(2019)
Measurement of the Charm-Mixing Parameter y_{CP}.
in Physical review letters
Aaij R
(2016)
Measurement of the CKM angle ? using B 0 ? DK *0 with D ? K S 0 p + p - decays
in Journal of High Energy Physics
Aaij R
(2016)
Measurement of the CP Asymmetry in B_{s}^{0}-B[over ¯]_{s}^{0} Mixing.
in Physical review letters
Aaij R
(2019)
Measurement of the CP-violating phase ? from B s 0 ? J / ? p + p - decays in 13 TeV pp collisions
in Physics Letters B
Khachatryan V
(2016)
Measurement of the CP-violating weak phase ?s and the decay width difference ?Gs using the B s 0 ? J / ? ? ( 1020 ) decay channel in pp collisions at s = 8 TeV
in Physics Letters B
Aaij R
(2016)
Measurement of the Difference of Time-Integrated CP Asymmetries in D^{0}?K^{-}K^{+} and D^{0}?p^{-}p^{+} Decays.
in Physical review letters
Khachatryan V
(2016)
Measurement of the differential cross section and charge asymmetry for inclusive [Formula: see text] production at [Formula: see text] TeV.
in The European physical journal. C, Particles and fields
Khachatryan V
(2016)
Measurement of the differential cross sections for top quark pair production as a function of kinematic event variables in p p collisions at s = 7 and 8 TeV
in Physical Review D
Aaij R
(2019)
Measurement of the electron reconstruction efficiency at LHCb
in Journal of Instrumentation
Sirunyan A
(2019)
Measurement of the energy density as a function of pseudorapidity in proton-proton collisions at $$\sqrt{s} =13\,\text {TeV} $$
in The European Physical Journal C
Akerib D
(2020)
Measurement of the gamma ray background in the Davis cavern at the Sanford Underground Research Facility
in Astroparticle Physics
Khachatryan V
(2016)
Measurement of the inclusive jet cross section in pp collisions at $$\sqrt{s} = 2.76\,\text {TeV}$$ s = 2.76 TeV
in The European Physical Journal C
Khachatryan V
(2016)
Measurement of the inelastic cross section in proton-lead collisions at s NN = 5.02 TeV
in Physics Letters B
Khachatryan V
(2016)
Measurement of the integrated and differential t t ¯ production cross sections for high- p T top quarks in p p collisions at s = 8 TeV
in Physical Review D
Aaij R
(2018)
Measurement of the Lifetime of the Doubly Charmed Baryon ?_{cc}^{++}.
in Physical review letters
Aaij R
(2016)
Measurement of the mass and lifetime of the O b - baryon
in Physical Review D
Aaij R
(2019)
Measurement of the mass and production rate of ? b - baryons
in Physical Review D
Aaij R
(2019)
Measurement of the Mass Difference Between Neutral Charm-Meson Eigenstates.
in Physical review letters
Abe K
(2019)
Measurement of the muon neutrino charged-current cross sections on water, hydrocarbon and iron, and their ratios, with the T2K on-axis detectors
in Progress of Theoretical and Experimental Physics
Abe K
(2016)
Measurement of the muon neutrino inclusive charged-current cross section in the energy range of 1-3 GeV with the T2K INGRID detector
in Physical Review D
Wan L
(2019)
Measurement of the neutrino-oxygen neutral-current quasielastic cross section using atmospheric neutrinos at Super-Kamiokande
in Physical Review D
Aaij R
(2018)
Measurement of the O_{c}^{0} Baryon Lifetime.
in Physical review letters
Aaij R
(2016)
Measurement of the properties of the ? b * 0 baryon
in Journal of High Energy Physics
Khachatryan V
(2016)
Measurement of the ratio B ( B s 0 ? J / ? f 0 ( 980 ) ) / B ( B s 0 ? J / ? ? ( 1020 ) ) in pp collisions at s = 7 TeV
in Physics Letters B
Aaij R
(2016)
Measurement of the ratio of branching fractions B B c + ? J / ? K + / B B c + ? J / ? p + $$ \mathrm{\mathcal{B}}\left({\mathrm{B}}_{\mathrm{c}}^{+}\to \mathrm{J}/{\uppsi \mathrm{K}}^{+}\right)/\mathrm{\mathcal{B}}\left({\mathrm{B}}_{\mathrm{c}}^{+}\to \mathrm{J}/{\uppsi \uppi}^{+}\right) $$
in Journal of High Energy Physics
Aaij R
(2018)
Measurement of the Ratio of Branching Fractions B(B_{c}^{+}?J/?t^{+}?_{t})/B(B_{c}^{+}?J/?µ^{+}?_{µ}).
in Physical review letters
Aaij R
(2018)
Measurement of the Ratio of the B^{0}?D^{*-}t^{+}?_{t} and B^{0}?D^{*-}µ^{+}?_{µ} Branching Fractions Using Three-Prong t-Lepton Decays.
in Physical review letters
Aaij R
(2019)
Measurement of the relative B - ? D 0 / D * 0 / D * * 0 µ - ? ¯ µ branching fractions using B - mesons from B ¯ s 2 * 0 decays
in Physical Review D
Abe K
(2018)
Measurement of the single p 0 production rate in neutral current neutrino interactions on water
in Physical Review D
Sirunyan AM
(2018)
Measurement of the Splitting Function in pp and Pb-Pb Collisions at sqrt[s_{NN}]=5.02 TeV.
in Physical review letters
Sirunyan AM
(2019)
Measurement of the t t ¯ production cross section, the top quark mass, and the strong coupling constant using dilepton events in pp collisions at s = 13 Te .
in The European physical journal. C, Particles and fields
Li Z
(2018)
Measurement of the tau neutrino cross section in atmospheric neutrino oscillations with Super-Kamiokande
in Physical Review D
Sirunyan AM
(2019)
Measurement of the top quark mass in the all-jets final state at s = 13 TeV and combination with the lepton+jets channel.
in The European physical journal. C, Particles and fields
Khachatryan V
(2016)
Measurement of the top quark mass using charged particles in p p collisions at s = 8 TeV
in Physical Review D
Khachatryan V
(2016)
Measurement of the top quark mass using proton-proton data at ( s ) = 7 and 8 TeV
in Physical Review D
Sirunyan A
(2018)
Measurement of the top quark mass with lepton+jets final states using $$\mathrm {p}$$$$\mathrm {p}$$ collisions at $$\sqrt{s}=13\,\text {TeV} $$
in The European Physical Journal C
Khachatryan V
(2016)
Measurement of the Top Quark Pair Production Cross Section in Proton-Proton Collisions at v[s]=13 TeV.
in Physical review letters
Sirunyan A
(2019)
Measurement of the top quark polarization and t t ¯ spin correlations using dilepton final states in proton-proton collisions at s = 13 TeV
in Physical Review D
Sirunyan A
(2019)
Measurement of the top quark Yukawa coupling from t t ¯ kinematic distributions in the lepton + jets final state in proton-proton collisions at s = 13 TeV
in Physical Review D
Sirunyan AM
(2018)
Measurement of the weak mixing angle using the forward-backward asymmetry of Drell-Yan events in p p collisions at 8 TeV.
in The European physical journal. C, Particles and fields
Sirunyan AM
(2018)
Measurement of the Z / ? * ? t t cross section in pp collisions at s = 13 TeV and validation of t lepton analysis techniques.
in The European physical journal. C, Particles and fields
Khachatryan V
(2016)
Measurement of the Z ? ? ? ? ? ? production cross section in pp collisions at s = 8 TeV and limits on anomalous ZZ? and Z?? trilinear gauge boson couplings
in Physics Letters B
Khachatryan V
(2016)
Measurement of the ZZ production cross section and Z ?l+l-l'+l'- branching fraction in pp collisions at s = 13 TeV
in Physics Letters B
Khachatryan V
(2016)
Measurement of top quark polarisation in t-channel single top quark production
in Journal of High Energy Physics
Khachatryan V
(2016)
Measurement of transverse momentum relative to dijet systems in PbPb and pp collisions at s N N = 2.76 $$ \sqrt{s_{\mathrm{NN}}}=2.76 $$ TeV
in Journal of High Energy Physics
Aaij R
(2019)
Measurements of CP asymmetries in charmless four-body $${\varLambda } ^0_{b} $$ and $${\varXi } ^0_{b} $$ decays
in The European Physical Journal C
Aaij R
(2016)
Measurements of prompt charm production cross-sections in pp collisions at s = 13 $$ \sqrt{s}=13 $$ TeV
in Journal of High Energy Physics
Sirunyan A
(2019)
Measurements of properties of the Higgs boson decaying to a W boson pair in pp collisions at s = 13 Te V
in Physics Letters B
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/ |