A5047028271- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Particle Detector Development and Performance
- Quantum Chromodynamics and Particle Interactions
- Dark Matter and Cosmic Phenomena
- Computational Physics and Python Applications
- Neutrino Physics Research
- Cosmology and Gravitation Theories
- Distributed and Parallel Computing Systems
- Black Holes and Theoretical Physics
- Medical Imaging Techniques and Applications
- Astrophysics and Cosmic Phenomena
- Radiation Detection and Scintillator Technologies
- Noncommutative and Quantum Gravity Theories
- advanced mathematical theories
- Advanced Data Storage Technologies
- Atomic and Subatomic Physics Research
- Particle accelerators and beam dynamics
- Superconducting Materials and Applications
- Particle Accelerators and Free-Electron Lasers
- Digital Radiography and Breast Imaging
- Statistical Mechanics and Entropy
- Homotopy and Cohomology in Algebraic Topology
- Advanced Operator Algebra Research
- Data Analysis with R
The University of Tokyo
2016-2025
University of Chicago
2012-2024
European Organization for Nuclear Research
2011-2024
Rutherford Appleton Laboratory
2011-2024
Fermi National Accelerator Laboratory
2012-2024
AGH University of Krakow
2023-2024
Jagiellonian University
2024
Atlas Scientific (United States)
2024
The University of Adelaide
2015-2023
Max Planck Institute for Physics
2020
It is shown that the one-loop two-point amplitude in Lorentz-invariant non-commutative (NC) φ3 theory finite after subtraction commutative limit and satisfies usual cutting rule. This eliminates unitarity problem Lorentz-non-invariant NC field approximation considered.
High luminosity conditions at the LHC pose many unique challenges for potential silicon based track trigger systems. Among those is data formatting, where hits from thousands of modules must first be shared and organized into overlapping towers. Other exist Level-1 triggers, parallel paths may used high speed time multiplexed processing. A full mesh backplane a natural candidate to address both challenges. custom enabled ATCA board called Pulsar II has been designed with goal creating...
Weak bases of flavors $(u,c)$, $(d,s)$, $(e,\ensuremath{\mu})$, and $({\ensuremath{\nu}}_{e},{\ensuremath{\nu}}_{\ensuremath{\mu}})$ are assumed as the ${S}_{3}$ doublet, $t$, $b$, $\ensuremath{\tau}$, ${\ensuremath{\nu}}_{\ensuremath{\tau}}$ singlet; further, there doublet Higgs $({H}_{1},{H}_{2})$ singlet ${H}_{S}$. We suggest an invariant model in which Yukawa interactions constructed from these doublets singlets invariant. In this model, we can explain quark sector mass hierarchy, mixing...
Ordinary differential calculus on smooth manifold is generalized so as to construct gauge theory coupled fermions discrete space M4 ×Z2 which an underlying space-time in the non-commutative geometry for standard model. We can reproduce not only bosonic sector but also fermionic of Weinberg-Salam without recourse Dirac operator at outset. Treatment based spinor one-forms from lagrangian derived through taking inner product. Two model constructions are presented using our formalism, both...
The High-Luminosity Large Hadron Collider (HL-LHC) starts from 2027 to extend the physics discovery potential at energy frontier. HL-LHC produces experimental data with a much higher luminosity, requiring large amount of computing resources mainly due complexity track pattern recognition algorithm. Quantum annealing might be solution for an efficient in environment. We demonstrated perform by using D-Wave machine and Fujitsu Digital Annealer. tracking efficiency purity quantum annealer are...
The use of tracking information at the trigger level in LHC Run II period is crucial for and data acquisition system will be even more so as contemporary collisions that occur every bunch crossing increase III. Fast TracKer part ATLAS upgrade project; it a hardware processor provide Level-1 accepted event (100 kHz) within 100μs, full tracks with momentum low 1 GeV . Providing fast, extensive access to information, resolution comparable offline reconstruction, FTK help precise detection...
We describe the design and expected performance of a Fast Tracker Trigger (FTK) system for ATLAS detector at Large Hadron Collider. The FTK is highly parallel hardware designed to operate Level 1 trigger output rate. It provide global tracks reconstructed in inner with resolution comparable full offline reconstruction as input 2 processing. based on associative memories pattern recognition fast FPGAs track reconstruction. dramatically improve isolation b-tagging little no dependencies...
The ATLAS detector at CERN's Large Hadron Collider (LHC) will be exposed to proton-proton collisions from beams crossing 40 MHz. A three-level trigger system select potentially interesting events in order reduce the read-out rate about 200 Hz. first level is implemented custom-built electronics and makes an initial fast selection based on data of coarse granularity. It has by a factor less than 100 kHz. other two consecutive levels are software run PC farms. We present overview first-level...
We incorporate Sogami's idea in the standard model into our previous formulation of non-commutative differential geometry by extending action extra exterior derivative operator on spinors defined over discrete space-time; four dimensinal Minkovski space multiplyed two point space. The extension consists making it possible to require that become nilpotent when acting spinors. It is shown generalized field strength leads most general, gauge-invariant Yang-Mills-Higgs Lagrangian even if not...
The previous differential calculus on discrete space M4 ×Z2 which is an underlying space-time in the non-commutative geometry for standard model reformulated by introducing two kinds of extra one-form basis. It shown that result easily generalized to ×ZN, where N signifies number sheets or copies M4. also that, = 3, SU(5) GUT with energy scales symmetry breaking fits naturally into scheme, Higgs sector possesses same structure as obtained Chamseddine et al., although no spinor quantities...
Measurements of the production cross section top-quark pairs ($t\bar t$) in $pp$ collisions at $\sqrt{s}$ = 7 TeV are presented using 35 \ipb\ data recorded with ATLAS detector Large Hadron Collider. Events selected single lepton (electron or muon) and dilepton topologies multi-jets, large missing transverse energy. The result is $σ_{t\bar t} 180 \pm 9\,\mathrm{(stat.)} \pm15 \,\mathrm{(syst.)} 6 \,\mathrm{(lumi.)\,pb}$, which agrees Standard Model prediction.
The first stage of the ATLAS Fast TracKer (FTK) is an ATCA-based input interface system, where hits from entire silicon tracker are clustered and organized into overlapping η-ϕ trigger towers before being sent to tracking engines. First, FTK Input Mezzanine cards receive hit data perform clustering reduce volume. Then, Data Formatter system will organize tower data, sharing among boards over full mesh backplanes optic fibers. board level design concepts implementation details, as well...
SO(10) grand unified theory (GUT) is reconstructed using the generalized differential calculus extended on discrete space M4 ×ZN, which was previously proposed by present author. The standard model, SU(5) GUT and left-right symmetric gauge have already been according to this formalism in picture of field Higgs as connection non-commutative geometry realized. Four sheets (N = 4) are prepared for reconstruction fields responsible symmetry breakdowns placed separately space. seesaw mechanism...
The Fast TracKer (FTK) is an upgrade to the ATLAS level-2 trigger. FTK system will reconstruct tracks using data from inner Pixel and SCT silicon detector modules at trigger rates up 100 kHz. We present overview of Data Formatter system, which designed remap, share reformat module match geometry towers.
The Fast Tracker (FTK) processor is an approved ATLAS upgrade that will reconstruct tracks using the full silicon tracker at Level-1 rate (up to 100 KHz). FTK uses a completely parallel approach read information, execute pattern matching and tracks. This approach, according detailed simulation results, allows tracking with nearly offline resolution within execution time of 100μs. A central component system associative memories (AM); these special devices reduce combinatoric problem,...
The standard model is reconstructed by a new method to incorporate strong interaction into our previous scheme based on non-commutative geometry. Generation mixing also taken account. characteristic feature take the fermion field so as contain quarks and leptons all together which almost equal that of SO(10) grand unified theory (GUT). space-time M4 ×Z2; Minkowski space multiplied two point discrete prepared express left-handed right-handed fields. generalized gauge A(x,y) written in...
The extended use of tracking information at the trigger level in LHC is crucial for and data acquisition (TDAQ) system to fulfill its task.Precise fast important identify specific decay products Higgs boson or new phenomena, as well distinguish contributions coming from many collisions that occur every bunch crossing.However, track reconstruction among most demanding tasks performed by TDAQ computing farm; fact, complete full Level-1 accept rate (100 kHz) not possible.In order overcome this...
Searches for pair production of scalar leptoquarks performed by the ATLAS experiment at Large Hadron Collider are presented. The full Run-2 dataset $pp$ collisions recorded with detector is exploited, corresponding to an integrated luminosity 139 fb$^{-1}$. Three classes final states considered: oppositely-charged same-flavour light-lepton (either two electrons or muons) and jets search decaying into a jet light-lepton; light-leptons least one hadronically $\tau$-lepton, which optimised...
The left-right symmetric gauge model (LRSM) is reconstructed using the previously proposed formalism based on non-commutative differential geometry extended discrete space M4 ×ZN. This so flexible and applicable that not only standard but also SU(5) grand unified have already been reformulated in this formalism, which presents many attractive points such as picture of field Higgs generalized connection noncommutative geometry. LRSM still alive a with intermediate symmetry spontaneously...
For the detector commissioning planned in 2007, sector assembly of ATLAS muon-endcap trigger chambers and final test at surface for assembled electronics are being done CERN almost completed. test, we built up Data Acquisition (DAQ) system using pulse two types cosmic rays order to check functionality various aspects mounted on a sector. So far, 99% all 320,000 channels have been tested most them were installed into cavern. In this presentation, will describe DAQ systems mass-test procedure...
Neutrino-nucleon scatterings are discussed within the framework of Wilson operator product expansion assuming that observed scaling violations due to field theoretical origin. It is shown total cross sections rise linealy with initial neutrino energy and section becomes equal antineutrino at sufficiently high energy. The numerical value muon inelasticity estimated be 9/16. average q2 also discussed.