T. B. Huffman
A5069248974- 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
- Computational Physics and Python Applications
- Cosmology and Gravitation Theories
- Neutrino Physics Research
- Radiation Detection and Scintillator Technologies
- Black Holes and Theoretical Physics
- Particle Accelerators and Free-Electron Lasers
- Distributed and Parallel Computing Systems
- Astrophysics and Cosmic Phenomena
- Medical Imaging Techniques and Applications
- Advanced Data Storage Technologies
- Cell Image Analysis Techniques
- Atomic and Subatomic Physics Research
- advanced mathematical theories
- Radiation Effects in Electronics
- CCD and CMOS Imaging Sensors
- 3D IC and TSV technologies
- Particle accelerators and beam dynamics
- Advancements in Semiconductor Devices and Circuit Design
- Electrostatic Discharge in Electronics
- Advanced Optical Sensing Technologies
University of Oxford
2016-2025
Government of Catalonia
2024
Atlas Scientific (United States)
2024
A. Alikhanyan National Laboratory
2024
SR Research (Canada)
2024
Federación Española de Enfermedades Raras
2024
The University of Adelaide
2014-2023
University of Bonn
2019-2023
University of California, Santa Cruz
2023
Northern Illinois University
2023
A search for the top quark in p\ifmmode\bar\else\textasciimacron\fi{}p collisions at a center-of-mass energy of 1.8 TeV using Collider Detector Fermilab is described. study events selected by requiring an energetic electron, missing transverse energy, and two or more jets excludes 95% confidence level standard-model production decay tt\ifmmode\bar\else\textasciimacron\fi{} pairs if top-quark mass between 40 77 GeV/${c}^{2}$. The observed electron + multijet data are consistent with W-boson...
We have determined mW=79.91±0.39 GeV/c2 from an analysis of W→eν and W→μν data the Collider Detector at Fermilab in p¯p collisions a c.m. energy √s =1.8 TeV. This result, together with world-average Z mass, determines weak mixing angle to be sin2θW=0.232±0.008. Bounds on top-quark mass are discussed.Received 13 August 1990DOI:https://doi.org/10.1103/PhysRevLett.65.2243©1990 American Physical Society
A common project to develop a bi-directional, radiation tolerant, high speed (4.8 Gb/s) optical link for future energy physics experiments is described. Due be completed in 2012, it targets the upgrade programs of detectors installed at CERN's Large Hadron Collider (LHC). The development and magnetic field tolerant opto-electronic devices, fibre connectors Both Single-Mode Multi-Mode versions system operating respectively 850 nm 1310 wavelength are proposed. First results component level...
This paper presents a summary of beam-induced backgrounds observed in the ATLAS detector and discusses methods to tag remove background contaminated events data. Trigger-rate based monitoring beam-related is presented. The correlations with machine conditions, such as residual pressure beam-pipe, are discussed. Results from dedicated beam-background simulations shown, their qualitative agreement data evaluated. Data taken during passage unpaired, i.e. non-colliding, proton bunches used...
Imaging is vital for the assessment of physiologic and phenotypic details. In past, biomedical imaging was heavily reliant on analog, low-throughput methods, which would produce two-dimensional images. However, newer, digital, high-throughput three-dimensional (3D) rely computer vision graphics, are transforming way professionals practice. 3D has been useful in diagnostic, prognostic, therapeutic decision-making medical professions. Herein, we summarize current methods that enable optimal...
Abstract Relativistic electron-positron plasmas are ubiquitous in extreme astrophysical environments such as black-hole and neutron-star magnetospheres, where accretion-powered jets pulsar winds expected to be enriched with pairs. Their role the dynamics of is many cases believed fundamental, but their behavior differs significantly from typical electron-ion due matter-antimatter symmetry charged components. So far, our experimental inability produce large yields positrons quasi-neutral...
A search for tt\ifmmode\bar\else\textasciimacron\fi{}\ensuremath{\rightarrow}e\ensuremath{\mu}+X in pp\ifmmode\bar\else\textasciimacron\fi{} collisions at s\ensuremath{\surd}\ifmmode\bar\else\textasciimacron\fi{} TeV is described. The production and decay of top-quark--antiquark pairs considered the context standard model. analysis based on data with an integrated luminosity 4.4 ${\mathrm{pb}}^{\mathrm{\ensuremath{-}}1}$ recorded Collider Detector Fermilab. An upper limit...
We have determined mW=79.91±0.39 GeV/c2 from an analysis of W→eν and W→μν data the Collider Detector at Fermilab in ¯pp collisions √s=1.8 TeV. From this result world-average Z mass, weak mixing angle is to be sin2θW=0.232±0.008. An upper bound on top-quark mass derived discussed.Received 13 August 1990DOI:https://doi.org/10.1103/PhysRevD.43.2070©1991 American Physical Society
An analysis of ${Z}^{0}$\ensuremath{\rightarrow}${e}^{+}$${e}^{\mathrm{\ensuremath{-}}}$ and ${Z}^{0}$\ensuremath{\rightarrow}${\ensuremath{\mu}}^{+}$${\ensuremath{\mu}}^{\mathrm{\ensuremath{-}}}$ data from the Collider Detector at Fermilab in p\ifmmode\bar\else\textasciimacron\fi{}p collisions \ensuremath{\surd}s =1.8 TeV yields a mass ${Z}^{0}$ boson ${M}_{Z}$=90.9\ifmmode\pm\else\textpm\fi{}0.3 (stat+syst)\ifmmode\pm\else\textpm\fi{}0.2 (scale) GeV/${c}^{2}$ width...
An analysis of high-transverse-momentum electrons using data from the Collider Detector at Fermilab (CDF) ¯pp collisions √s=1800 GeV yields values production cross section times branching ratio for W and Z0 bosons σ(¯pp→WX→eνX)=2.19±0.04(stat)±0.21(syst) nb σ(¯pp→Z0X→e+e−X)=0.209±0.013(stat)±0.017(syst) nb. Detailed descriptions CDF electron identification, background, efficiency, acceptance are included. Theoretical predictions sections that include a mass top quark larger than mass,...
The Versatile Link is a bi-directional digital optical data link operating at rates up to 4.8 Gbit/s and featuring radiation-resistant low-power low-mass front-end components. system being developed in multimode or singlemode versions 850 nm 1310 wavelength respectively. It has serial interfaces protocol-agnostic, but targeted operate tandem with the GigaBit Transceiver (GBT) serializer/deserializer chip designed CERN. This paper gives an overview of project status three half years after its...
Charge collection properties of particle detectors made in HV-CMOS technology were investigated before and after irradiation with reactor neutrons. Two different sensor types designed processed 180 350 nm by AMS. Edge-TCT charge measurements electrons from 90Sr source employed. Diffusion generated carriers undepleted substrate contributes significantly to the irradiation, while drift contribution prevails as shown at shaping times. The depleted region a given bias voltage was found grow...
Connectomics is the study of full connection matrix brain. Recent advances in high-throughput, high-resolution 3D microscopy methods have enabled imaging whole small animal brains at a sub-micrometer resolution, potentially opening road to full-blown connectomics research. One first such instruments achieve whole-brain-scale resolution Knife-Edge Scanning Microscope (KESM). KESM whole-brain data sets now include Golgi (neuronal circuits), Nissl (soma distribution), and India ink (vascular...
Even though jet substructure was not an original design consideration for the Large Hadron Collider (LHC) experiments, it has emerged as essential tool current physics program. We examine role of on motivation and future energy Frontier colliders. In particular, we discuss need a vibrant theory experimental research development program to extend into new regimes probed by Jet organically evolved with close connection between theorists experimentalists catalyzed exciting innovations in both...
A search for the top quark in p¯p collisions at a center-of-mass energy of 1.8 TeV using Collider Detector Fermilab is described. study events selected by requiring an energetic electron, missing transverse energy, and two or more jets excludes 95% confidence level standardmodel production decay tt¯ pairs if top-quark mass between 40 77 GeV/c2. The observed electron+multijet data are consistent with W-boson production.Received 12 July 1990DOI:https://doi.org/10.1103/PhysRevD.43.664©1991...
Using the Collider Detector at Fermilab, W-boson differential cross section d\ensuremath{\sigma}/${\mathit{dP}}_{\mathit{T}}$ is measured using W\ensuremath{\rightarrow}e\ensuremath{\nu} events in proton-antiproton collisions \ensuremath{\surd}s =1.8 TeV. A next-to-leading-order theoretical calculation agrees well with data. The (\ensuremath{\sigma}) for ${\mathit{P}}_{\mathit{T}}$>50 GeV/c to be 423\ifmmode\pm\else\textpm\fi{}58(stat)\ifmmode\pm\else\textpm\fi{}108(syst) pb.
We have measured the Z-boson production differential cross section as a function of transverse momentum using Z\ensuremath{\rightarrow}ee and Z\ensuremath{\rightarrow}\ensuremath{\mu}\ensuremath{\mu} decays in p\ifmmode\bar\else\textasciimacron\fi{}p collision at \ensuremath{\surd}s =1.8 TeV with Collider Detector Fermilab. Comparison standard-model predictions shows good agreement over range 0${\mathit{p}}_{\mathit{T}}$160 GeV/c available from this data sample.
We have measured the cross section as a function of invariant mass for isolated electron pairs produced in p¯p collisions at s=1.8 TeV pair masses M>30 GeV/c2. find good agreement between distribution and standard-model prediction Drell-Yan production mechanism. Additional heavy neutral vector bosons (Z′) are excluded MZ'<387 GeV/c2 (95% confidence level) assuming couplings. A lower limit 2.2 is placed on electron-quark compositeness scale parameter Λ−LL associated with an effective contact...
An analysis of W- and Z-boson production using data from the Collider Detector at Fermilab \ensuremath{\surd}s =1.8 TeV yields \ensuremath{\sigma}(W\ensuremath{\rightarrow}ev)/\ensuremath{\sigma}(Z\ensuremath{\rightarrow}ee)=10.2\ifmmode\pm\else\textpm\fi{}0.8(stat)\ifmmode\pm\else\textpm\fi{}0.4(syst). The width W boson, \ensuremath{\Gamma}(W), a limit on top-quark mass independent decay mode are extracted this measurement.
The SVX vertex detector has been very successful in heavy flavor physics at CDF, playing a significant role both top and bottom analyses. SVX′, radiation hard version of SVX, is presently taking data. In 1998 the Main Injector upgrade to accelerator complex Fermilab will provide increase luminosity, require new detector, II. specifications design considerations for this are discussed.
The LHC upgrade will extensively increase the area of silicon detectors used in ATLAS experiment and require substantial changes to readout system both CMS experiments. two experiments are expected use optical systems for part data control paths which must withstand levels radiation equivalent a dose approximately 400 kGy(Si) at 30 cm from collision region (including safety factor 1.5). As search acceptably hard fibres, four Graded Index multimode (GRIN) fibres one single-mode (SM) fibre...