Consolidated Grant
Lead Research Organisation:
King's College London
Department Name: Physics
Abstract
The aim of the Experimental Particle & Astroparticle Physics (EPAP) group is to address some of the
major open questions in our understanding of matter through the study of the nature of fundamental
particles. In particular, we aim to address many of the open questions in the neutrino sector. We
also continue to search for new physics, addressing phenomena including proton decay, ultra-light dark
matter and gravitational waves from astrophyiscal sources.
Through our long-standing involvement in the Japanese programme of experiments: T2K,
Super-Kamiokande and Hyper-Kamiokande, we work on precision neutrino oscillation measurements
combining both beam and atmospheric neutrino samples, aiming to ultimately understand the
contribution of leptonic CP violation towards explaining the matter-antimatter asymmetry of our
universe. To facilitate successful measurements, we are pursuing a detailed understanding of
relevant neutrino interaction cross-sections (in particular electron neutrino cross-sections),
detector response and systematic uncertainties. We also support these efforts by developing the
computing software infrastructure required to analyse the large data volumes and maintaining the
outer detector for Super-Kamiokande.
We also play an important role in the SNO+ experiment in Canada, which will collect its main data
to search for neutrino-less double beta decay, hence probing the nature and mass of the neutrino,
during this grant period. Our work will enable this and other key measurements (such as solar and
reactor neutrino spectra that further probe oscillation parameters) through analysis coordination
and a careful study of time correlated backgrounds and detector response.
Through IceCUBE we access the very high end of the neutrino energy spectrum, preparing and
searching for new physics within, the astrophysical neutrino sample, and placing limits on Lorentz
violation from atmospheric neutrino data.
Another goal of the group is the search for proton-decay, motivated by many unified theories,
combining extensive phenomenological expertise with our experimental experience in Super-K and
Hyper-K. Further new physics will be addressed through the Atomic Interferometer Observatory
Network (AION). Our contributions to the development of this series of UK-based quantum interferometer
detectors to explore ultra-light dark matter candidates and detect gravitational waves from
astrophysical sources, will involve detailed sensitivity studies to inform the design.
major open questions in our understanding of matter through the study of the nature of fundamental
particles. In particular, we aim to address many of the open questions in the neutrino sector. We
also continue to search for new physics, addressing phenomena including proton decay, ultra-light dark
matter and gravitational waves from astrophyiscal sources.
Through our long-standing involvement in the Japanese programme of experiments: T2K,
Super-Kamiokande and Hyper-Kamiokande, we work on precision neutrino oscillation measurements
combining both beam and atmospheric neutrino samples, aiming to ultimately understand the
contribution of leptonic CP violation towards explaining the matter-antimatter asymmetry of our
universe. To facilitate successful measurements, we are pursuing a detailed understanding of
relevant neutrino interaction cross-sections (in particular electron neutrino cross-sections),
detector response and systematic uncertainties. We also support these efforts by developing the
computing software infrastructure required to analyse the large data volumes and maintaining the
outer detector for Super-Kamiokande.
We also play an important role in the SNO+ experiment in Canada, which will collect its main data
to search for neutrino-less double beta decay, hence probing the nature and mass of the neutrino,
during this grant period. Our work will enable this and other key measurements (such as solar and
reactor neutrino spectra that further probe oscillation parameters) through analysis coordination
and a careful study of time correlated backgrounds and detector response.
Through IceCUBE we access the very high end of the neutrino energy spectrum, preparing and
searching for new physics within, the astrophysical neutrino sample, and placing limits on Lorentz
violation from atmospheric neutrino data.
Another goal of the group is the search for proton-decay, motivated by many unified theories,
combining extensive phenomenological expertise with our experimental experience in Super-K and
Hyper-K. Further new physics will be addressed through the Atomic Interferometer Observatory
Network (AION). Our contributions to the development of this series of UK-based quantum interferometer
detectors to explore ultra-light dark matter candidates and detect gravitational waves from
astrophysical sources, will involve detailed sensitivity studies to inform the design.
Organisations
Publications
Di Lodovico F
(2023)
Experimental Considerations in Long-Baseline Neutrino Oscillation Measurements
in Annual Review of Nuclear and Particle Science
Abe K
(2022)
Search for solar electron anti-neutrinos due to spin-flavor precession in the Sun with Super-Kamiokande-IV
in Astroparticle Physics
Abe K
(2022)
Scintillator ageing of the T2K near detectors from 2010 to 2021
in Journal of Instrumentation
Abe K
(2022)
Neutron tagging following atmospheric neutrino events in a water Cherenkov detector
in Journal of Instrumentation
Abe K
(2022)
First gadolinium loading to Super-Kamiokande
in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Wilson J
(2023)
Thermally-driven scintillator flow in the SNO+ neutrino detector
in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Shinoki M
(2023)
Measurement of the cosmogenic neutron yield in Super-Kamiokande with gadolinium loaded water
in Physical Review D
Lees J
(2023)
Measurement of additional radiation in the initial-state-radiation processes e + e - ? µ + µ - ? and e + e - ? p + p - ? at BABAR
in Physical Review D
Abe K
(2023)
Measurements of the ? µ and ? ¯ µ -induced coherent charged pion production cross sections on C 12 by the T2K experiment
in Physical Review D
Lees J
(2023)
Search for heavy neutral leptons using tau lepton decays at BaBaR
in Physical Review D
Matsumoto R
(2022)
Search for proton decay via p ? µ + K 0 in 0.37 megaton-years exposure of Super-Kamiokande
in Physical Review D
Sakai S
(2024)
Measurement of the neutrino-oxygen neutral-current quasielastic cross section using atmospheric neutrinos in the SK-Gd experiment
in Physical Review D
Allega A
(2022)
Improved search for invisible modes of nucleon decay in water with the SNO + detector
in Physical Review D
Abe K
(2023)
Updated T2K measurements of muon neutrino and antineutrino disappearance using 3.6 × 10 21 protons on target
in Physical Review D
Lees J
(2023)
Search for B mesogenesis at BaBar
in Physical Review D
Lees J
(2023)
Precision e - beam polarimetry at an e + e - B factory using tau-pair events
in Physical Review D
Lees JP
(2022)
Search for Darkonium in e^{+}e^{-} Collisions.
in Physical review letters
Aguilar-Arevalo AA
(2022)
MiniBooNE and MicroBooNE Combined Fit to a 3+1 Sterile Neutrino Scenario.
in Physical review letters
Lees JP
(2023)
Search for Evidence of Baryogenesis and Dark Matter in B^{+}??_{D}+p Decays at BABAR.
in Physical review letters
Abe K
(2023)
Search for Cosmic-Ray Boosted Sub-GeV Dark Matter Using Recoil Protons at Super-Kamiokande.
in Physical review letters
Lees JP
(2022)
Search for an Axionlike Particle in B Meson Decays.
in Physical review letters
Lees JP
(2022)
Search for Lepton Flavor Violation in ?(3S)?e^{±}µ^{±}.
in Physical review letters
Allega A
(2023)
Evidence of Antineutrinos from Distant Reactors Using Pure Water at SNO.
in Physical review letters