M. Thomson
A5011543287- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Neutrino Physics Research
- Astrophysics and Cosmic Phenomena
- Cosmology and Gravitation Theories
- Computational Physics and Python Applications
- Particle Accelerators and Free-Electron Lasers
- Black Holes and Theoretical Physics
- Radiation Detection and Scintillator Technologies
- Particle accelerators and beam dynamics
- Superconducting Materials and Applications
- Atomic and Subatomic Physics Research
- Distributed and Parallel Computing Systems
- Medical Imaging Techniques and Applications
- advanced mathematical theories
- Noncommutative and Quantum Gravity Theories
- Muon and positron interactions and applications
- SARS-CoV-2 and COVID-19 Research
- Nuclear Physics and Applications
- International Science and Diplomacy
- Nuclear physics research studies
- Scientific Computing and Data Management
Education Scotland
2024
University of Cambridge
2012-2022
Wellcome Sanger Institute
2021-2022
Halliburton (United Kingdom)
2019
University of Pennsylvania
1915-2017
Cavendish Hospital
2001-2017
The University of Adelaide
2013-2016
Ludwig-Maximilians-Universität München
2011-2016
Institute of Particle Physics
2015-2016
Université de Montréal
2015-2016
AKARI, the first Japanese satellite dedicated to infrared astronomy, was launched on 2006 February 21, and started observations in May of same year. AKARI has a 68.5 cm cooled telescope, together with two focal-plane instruments, which survey sky six wavelength bands from mid- far-infrared. The instruments also have capability for imaging spectroscopy range 2 - 180 micron pointed observation mode, occasionally inserted into continuous operation. in-orbit cryogen lifetime is expected be one...
We report measurements of oscillation parameters from ν(μ) and disappearance using beam atmospheric data MINOS. The comprise exposures 10.71×10(20) protons on target in the ν(μ)-dominated beam, 3.36×10(20) ν(μ)-enhanced 37.88 kton yr neutrinos. Assuming identical ν parameters, we measure |Δm2| = (2.41(-0.10)(+0.09))×10(-3) eV2 sin2(2θ) 0.950(-0.036)(+0.035). Allowing independent oscillations, antineutrino (2.50(-0.25)(+0.23))×10(-3) 0.97(-0.08)(+0.03), with minimal change to neutrino parameters.
We report on a new analysis of neutrino oscillations in MINOS using the complete set accelerator and atmospheric data. The combines $\nu_{\mu}$ disappearance $\nu_{e}$ appearance data three-flavor formalism. measure $|\Delta m^{2}_{32}|=[2.28-2.46]\times10^{-3}\mbox{\,eV}^{2}$ (68% C.L.) $\sin^{2}\theta_{23}=0.35-0.65$ (90% normal hierarchy, m^{2}_{32}|=[2.32-2.53]\times10^{-3}\mbox{\,eV}^{2}$ $\sin^{2}\theta_{23}=0.34-0.67$ inverted hierarchy. also constrain $\delta_{CP}$, $\theta_{23}$...
We report on ν(e) and appearance in ν(μ) beams using the full MINOS data sample. The comparison of these at a 735 km baseline with θ13 measurements by reactor experiments probes δ, θ23 octant degeneracy, mass hierarchy. This analysis is first use this technique includes accelerator long-baseline search for → ν(e). Our disfavor 31% (5%) three-parameter space defined θ23, hierarchy 68% (90%) C.L. measure value 2sin(2)(2θ13)sin(2)(θ23) that consistent experiments.
An analog hadron calorimeter (AHCAL) prototype of 5.3 nuclear interaction lengths thickness has been constructed by members the CALICE Collaboration. The AHCAL consists a 38-layer sandwich structure steel plates and highly-segmented scintillator tiles that are read out wavelength-shifting fibers coupled to SiPMs. signal is amplified shaped with custom-designed ASIC. A calibration/monitoring system based on LED light was developed monitor SiPM gain measure full response curve in order correct...
The CALICE collaboration is studying the design of high performance electromagnetic and hadronic calorimeters for future International Linear Collider detectors. For calorimeter, current baseline choice a granularity sampling calorimeter with tungsten as absorber silicon detectors sensitive material. A ``physics prototype'' has been constructed, consisting thirty layers. Each layer an active area 18 × cm2 pad size 1 cm2. thickness totals 24 radiation lengths. It exposed in 2006 2007 to...
We report an improved measurement of ν(μ) disappearance over a distance 735 km using the MINOS detectors and Fermilab Main Injector neutrino beam in ν(μ)-enhanced configuration. From total exposure 2.95×10(20) protons on target, which 42% have not been previously analyzed, we make most precise Δm2=[2.62(-0.28)(+0.31)(stat)±0.09(syst)]×10(-3) eV2 constrain mixing angle sin2(2θ)>0.75 (90% C.L.). These values are agreement with Δm2 sin2(2θ) measured for ν(μ), removing tension reported [P....
We have searched for sidereal variations in the rate of antineutrino interactions MINOS Near Detector. Using antineutrinos produced by NuMI beam, we find no statistically significant modulation rate. When this result is placed context Standard Model Extension theory are able to place upper limits on coefficients defining theory. These used combination with results from an earlier analysis neutrino data further constrain coefficients.
A bstract The Compact Linear Collider (CLIC) is a proposed future high-luminosity linear electron-positron collider operating at three energy stages, with nominal centre-of-mass energies $$ \sqrt{s} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> </mml:math> = 380 GeV, 1 . 5 TeV, and 3 TeV. Its aim to explore the frontier, providing sensitivity physics beyond Standard Model (BSM) precision measurements of processes an emphasis on Higgs...
Kinematic distributions from an inclusive sample of $1.41\ifmmode\times\else\texttimes\fi{}{10}^{6}$ charged-current ${\ensuremath{\nu}}_{\ensuremath{\mu}}$ interactions on iron, obtained using the MINOS near detector exposed to a wide-band beam with peak flux at 3 GeV, are compared conventional treatment neutrino scattering within Fermi gas nucleus. Results used guide selection subsample enriched in quasielastic ${\ensuremath{\nu}}_{\ensuremath{\mu}}\mathrm{Fe}$ interactions, containing...
The studies presented in this paper provide a first experimental test of the Particle Flow Algorithm (PFA) concept using data recorded high granularity calorimeters. Pairs overlaid pion showers from CALICE 2007 beam are reconstructed by PandoraPFA program developed to implement PFA for future lepton collider. Recovery neutral hadron's energy vicinity charged hadron is studied. impact two overlapping on resolution investigated. dependence confusion error distance between 10 GeV and derived...
We report the final measurement of neutrino oscillation parameters $\mathrm{\ensuremath{\Delta}}{m}_{32}^{2}$ and ${\mathrm{sin}}^{2}{\ensuremath{\theta}}_{23}$ using all data from MINOS $\mathrm{MINOS}+$ experiments. These were collected a total exposure $23.76\ifmmode\times\else\texttimes\fi{}{10}^{20}$ protons on target producing ${\ensuremath{\nu}}_{\ensuremath{\mu}}$ ${\overline{\ensuremath{\nu}}}_{\ensuremath{\mu}}$ beams 60.75 kt yr to atmospheric neutrinos. The disappearance...
The energy resolution of a highly granular 1 m3 analogue scintillator-steel hadronic calorimeter is studied using charged pions with energies from 10 GeV to 80 at the CERN SPS. for single hadrons determined be approximately 58%/sqrt(E/GeV}. This improved 45%/sqrt(E/GeV) software compensation techniques. These techniques take advantage event-by-event information about substructure showers which provided by imaging capabilities calorimeter. reconstruction either corrections based on local...
This paper reports measurements of atmospheric neutrino and antineutrino interactions in the MINOS Far Detector, based on 2553 live-days (37.9 kton-years) data. A total 2072 candidate events are observed. These separated into 905 contained-vertex muons 466 neutrino-induced rock-muons, both produced by charged-current $\nu_{\mu}$ $\bar{\nu}_{\mu}$ interactions, 701 showers, composed mainly $\nu_{e}$ $\bar{\nu}_{e}$ neutral-current interactions. The curvature muon tracks magnetic field...
The development of automated solutions to pattern recognition problems is important in many areas scientific research and human endeavour. This paper describes the implementation Pandora software kit, which aids process designing, implementing running algorithms. Application Programming Interfaces ensure simple specification building-blocks defining a problem. logic required solve problem implemented algorithms request operations create or modify data structures are performed by framework....
A future e+e- collider, such as the ILC or CLIC, would allow Higgs sector to be probed with a precision significantly beyond that achievable at High-Luminosity LHC. central part of programme an collider is model-independent determination absolute couplings fermions and gauge bosons. Here measurement e+e-->HZ Higgsstrahlung cross section, using recoil mass technique, sets scale for all coupling measurements. Previous studies have considered ->ZH Z->l+l-, where l = electron muon. In this paper...