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
Aaij R
(2019)
Measurement of the B c - meson production fraction and asymmetry in 7 and 13 TeV p p collisions
in Physical Review D
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
Sirunyan A
(2019)
Search for an L - L gauge boson using Z ? 4µ events in proton-proton collisions at s = 13 TeV
in Physics Letters B
Sirunyan A
(2019)
Probing the chiral magnetic wave in p Pb and PbPb collisions at s NN = 5.02 TeV using charge-dependent azimuthal anisotropies
in Physical Review C
Sirunyan AM
(2019)
Jet Shapes of Isolated Photon-Tagged Jets in Pb-Pb and pp Collisions at sqrt[s_{NN}]=5.02 TeV.
in Physical review letters
Hagiwara K
(2019)
Search for Astronomical Neutrinos from Blazar TXS 0506+056 in Super-Kamiokande
in The Astrophysical Journal Letters
Uchida K
(2019)
Results from the CBC3 readout ASIC for CMS 2S-modules
in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Sirunyan A
(2019)
Centrality and pseudorapidity dependence of the transverse energy density in p Pb collisions at s N N = 5.02 TeV
in Physical Review C
Sirunyan A
(2019)
Non-Gaussian elliptic-flow fluctuations in PbPb collisions at s NN = 5.02 TeV
in Physics Letters B
Sirunyan AM
(2019)
Combined measurements of Higgs boson couplings in proton-proton collisions at s = 13 Te .
in The European physical journal. C, Particles and fields
Sirunyan A
(2019)
Search for a W' boson decaying to a t lepton and a neutrino in proton-proton collisions at s = 13 TeV
in Physics Letters B
Sirunyan A
(2019)
Erratum to: Search for a new scalar resonance decaying to a pair of Z bosons in proton-proton collisions at s = 13 $$ \sqrt{s}=13 $$ TeV
in Journal of High Energy Physics
Blondel A
(2020)
The SuperFGD Prototype charged particle beam tests
in Journal of Instrumentation
Akerib D
(2020)
Extending light WIMP searches to single scintillation photons in LUX
in Physical Review D
Abe K
(2020)
First combined measurement of the muon neutrino and antineutrino charged-current cross section without pions in the final state at T2K
in Physical Review D
Aaij R
(2020)
Determination of quantum numbers for several excited charmed mesons observed in B - ? D * + p - p - decays
in Physical Review D
Sirunyan A
(2020)
Search for direct top squark pair production in events with one lepton, jets, and missing transverse momentum at 13 TeV with the CMS experiment
in Journal of High Energy Physics
Aaij R
(2020)
Isospin Amplitudes in ?_{b}^{0}?J/??(S^{0}) and ?_{b}^{0}?J/??^{0}(?) Decays.
in Physical review letters
Sirunyan A
(2020)
Measurements of production cross sections of WZ and same-sign WW boson pairs in association with two jets in proton-proton collisions at s = 13 TeV
in Physics Letters B
Akerib D
(2020)
The LUX-ZEPLIN (LZ) experiment
in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Sirunyan A
(2020)
Search for resonant pair production of Higgs bosons in the b b Z Z channel in proton-proton collisions at s = 13 TeV
in Physical Review D
Sirunyan A
(2020)
Pileup mitigation at CMS in 13 TeV data
in Journal of Instrumentation
Sirunyan A
(2020)
Measurement of the associated production of a Z boson with charm or bottom quark jets in proton-proton collisions at s = 13 TeV
in Physical Review D
Sirunyan A
(2020)
Measurement of properties of $$ {\mathrm{B}}_{\mathrm{s}}^0 $$? µ+µ- decays and search for B0? µ+µ- with the CMS experiment
in Journal of High Energy Physics
Aaij R
(2020)
Measurement of the relative branching fractions of B + ? h + h ' + h ' - decays
in Physical Review D
MICE Collaboration
(2020)
Demonstration of cooling by the Muon Ionization Cooling Experiment.
in Nature
Abe K
(2020)
Indirect search for dark matter from the Galactic Center and halo with the Super-Kamiokande detector
in Physical Review D
Fitch N
(2020)
Methods for measuring the electron's electric dipole moment using ultracold YbF molecules
in Quantum Science and Technology
Aaij R
(2020)
Constraints on the K_{S}^{0}?µ^{+}µ^{-} Branching Fraction.
in Physical review letters
Sirunyan AM
(2020)
Observation of the Production of Three Massive Gauge Bosons at sqrt[s]=13 TeV.
in Physical review letters
Akerib D
(2020)
Discrimination of electronic recoils from nuclear recoils in two-phase xenon time projection chambers
in Physical Review D
Sirunyan A
(2020)
W + W - boson pair production in proton-proton collisions at s = 13 TeV
in Physical Review D
Sirunyan AM
(2020)
Search for a Narrow Resonance Lighter than 200 GeV Decaying to a Pair of Muons in Proton-Proton Collisions at sqrt[s]=13 TeV.
in Physical review letters
Sirunyan AM
(2020)
A multi-dimensional search for new heavy resonances decaying to boosted W W , W Z , or Z Z boson pairs in the dijet final state at 13 Te .
in The European physical journal. C, Particles and fields
Abi B
(2020)
First results on ProtoDUNE-SP liquid argon time projection chamber performance from a beam test at the CERN Neutrino Platform
in Journal of Instrumentation
Aaij R
(2020)
Observation of Enhanced Double Parton Scattering in Proton-Lead Collisions at sqrt[s_{NN}]=8.16 TeV.
in Physical review letters
Sirunyan A
(2020)
Measurement of $$\hbox {t}{\bar{\hbox {t}}}$$ normalised multi-differential cross sections in $${\text {p}}{\text {p}} $$ collisions at $$\sqrt{s}=13\,{\text {TeV}} $$, and simultaneous determination of the strong coupling strength, top quark pole mass, and parton distribution functions
in The European Physical Journal C
Sirunyan A
(2020)
Investigation into the event-activity dependence of ?(nS) relative production in proton-proton collisions at $$ \sqrt{s} $$ = 7 TeV
in Journal of High Energy Physics
Aaij R
(2020)
Amplitude analysis of the B + ? D + D - K + decay
in Physical Review D
Akerib D
(2020)
Search for two neutrino double electron capture of 124 Xe and 126 Xe in the full exposure of the LUX detector
in Journal of Physics G: Nuclear and Particle Physics
Sirunyan A
(2020)
Search for decays of the 125 GeV Higgs boson into a Z boson and a ? or ? meson
in Journal of High Energy Physics
Aaij R
(2020)
Updated measurement of decay-time-dependent C P asymmetries in D 0 ? K + K - and D 0 ? p + p - decays
in Physical Review D
Aaij R
(2020)
Precision measurement of the $$ {\varXi}_{cc}^{++} $$ mass
in Journal of High Energy Physics
Sirunyan A
(2020)
A Deep Neural Network for Simultaneous Estimation of b Jet Energy and Resolution
in Computing and Software for Big Science
Aaij R
(2020)
First Observation of Excited O_{b}^{-} States.
in Physical review letters
Sirunyan A
(2020)
Search for an excited lepton that decays via a contact interaction to a lepton and two jets in proton-proton collisions at $$ \sqrt{s} $$ = 13 TeV
in Journal of High Energy Physics