P. N. Ratoff

ORCID: 0000-0003-4573-3729
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About
Contact & Profiles
Research Areas
  • Particle physics theoretical and experimental studies
  • High-Energy Particle Collisions Research
  • Quantum Chromodynamics and Particle Interactions
  • Particle Detector Development and Performance
  • Neutrino Physics Research
  • Dark Matter and Cosmic Phenomena
  • Astrophysics and Cosmic Phenomena
  • Computational Physics and Python Applications
  • Cosmology and Gravitation Theories
  • Black Holes and Theoretical Physics
  • Muon and positron interactions and applications
  • Particle Accelerators and Free-Electron Lasers
  • Radiation Detection and Scintillator Technologies
  • Particle accelerators and beam dynamics
  • Atomic and Subatomic Physics Research
  • advanced mathematical theories
  • Nuclear Physics and Applications
  • Superconducting Materials and Applications
  • Distributed and Parallel Computing Systems
  • Nuclear physics research studies
  • Silicon and Solar Cell Technologies
  • Scientific Research and Discoveries
  • Laser-Plasma Interactions and Diagnostics
  • Medical Imaging Techniques and Applications
  • Noncommutative and Quantum Gravity Theories

Lancaster University
2016-2025

Lancaster City Council
2020-2024

University of Bern
2023

Albert Einstein College of Medicine
2023

Eötvös Loránd University
2023

Boston University
2013-2023

Duke University
2018-2023

Universidad Autónoma de Madrid
2018-2023

University of California, Irvine
2013-2023

Colorado State University
2021-2023

10.1016/s0168-9002(01)00560-5 article EN Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment 2001-07-01

The reaction ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}{e}^{+}{e}^{\ensuremath{-}}{\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}$ has been analyzed using 97 ${\mathrm{pb}}^{\ensuremath{-}1}$ of data taken with the Crystal Ball detector at DESY ${e}^{\ensuremath{-}}{e}^{+}$ storage ring DORIS II beam energies around 5.3 GeV. For first time we have measured cross section for $\ensuremath{\gamma}\ensuremath{\gamma}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}$...

10.1103/physrevd.41.3324 article EN Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 1990-06-01

The T2K experiment studies oscillations of an off-axis muon neutrino beam between the J-PARC accelerator complex and Super-Kamiokande detector. Special emphasis is placed on measuring mixing angle theta_13 by observing electron appearance via sub-dominant to oscillation, searching for CP violation in lepton sector. includes a sophisticated, off-axis, near detector, ND280, situated 280 m downstream production target order measure properties understand better interactions at energy scale below...

10.1088/1748-0221/8/10/p10019 article EN cc-by Journal of Instrumentation 2013-10-17

10.1016/s0168-9002(01)00347-3 article EN Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment 2001-06-01

A facility that can deliver beams of electron and muon neutrinos from the decay a stored beam has potential to unambiguously resolve issue evidence for light sterile arises in short-baseline neutrino oscillation experiments estimates effective number flavors fits cosmological data. In this paper, we show nuSTORM facility, with muons $3.8\text{ }\mathrm{GeV}/\mathrm{c}\text{ }\ifmmode\pm\else\textpm\fi{}\text{ }10%$, will be able carry out conclusive appearance search test LSND MiniBooNE...

10.1103/physrevd.89.071301 article EN Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D, Particles, fields, gravitation, and cosmology 2014-04-09

The `Laser-hybrid Accelerator for Radiobiological Applications', LhARA, is conceived as a novel, flexible facility dedicated to the study of radiobiology. technologies demonstrated in which have wide application, will be developed allow particle-beam therapy delivered new regimen, combining variety ion species single treatment fraction and exploiting ultra-high dose rates. LhARA hybrid accelerator system laser interactions drive creation large flux protons or light ions that are captured...

10.3389/fphy.2020.567738 article EN cc-by Frontiers in Physics 2020-09-29

The reaction \ensuremath{\gamma}\ensuremath{\gamma}\ensuremath{\rightarrow}${\ensuremath{\pi}}^{0}$\ensuremath{\eta} has been investigated with the Crystal Ball detector at DESY storage ring DORIS II. Formation of \ensuremath{\delta}(980) and ${A}_{2}$(1320) observed \ensuremath{\gamma}\ensuremath{\gamma} partial widths ${\ensuremath{\Gamma}}_{\ensuremath{\gamma}\ensuremath{\gamma}}$(${A}_{2}$)=1.14\ifmmode\pm\else\textpm\fi{}0.20\ifmmode\pm\else\textpm\fi{}0.2 6 keV...

10.1103/physrevd.33.1847 article EN Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 1986-04-01

The Crystal Ball detector has been used at the DORIS II storage ring DESY to study reaction ${\mathit{e}}^{+}$${\mathit{e}}^{\mathrm{\ensuremath{-}}}$\ensuremath{\rightarrow}${\mathit{e}}^{+}$${\mathit{e}}^{\mathrm{\ensuremath{-}}}$\ensuremath{\gamma}*\ensuremath{\gamma}*\ensuremath{\rightarrow}${\mathit{e}}^{+}$${\mathit{e}}^{\mathrm{\ensuremath{-}}}$\ensuremath{\gamma}\ensuremath{\gamma}, where X is a narrow resonance with mass between 100 and 3000 MeV. Formation of...

10.1103/physrevd.38.1365 article EN Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 1988-09-01

10.1016/s0168-9002(98)00884-5 article EN Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment 1998-12-01

The inclusive photon spectrum in hadronic decays of the $\ensuremath{\Upsilon}(2S)$ is measured with Crystal Ball detector at DORIS II. Four well separated lines, which are consistent decay hypothesis $\ensuremath{\Upsilon}(2S)\ensuremath{\rightarrow}\ensuremath{\gamma}+^{3}P_{2,1,0}$ and $^{3}P_{2,1}\ensuremath{\rightarrow}\ensuremath{\gamma}\ensuremath{\Upsilon}(1S)$, observed. energies lines from primary transitions...

10.1103/physrevlett.54.2195 article EN Physical Review Letters 1985-05-20

10.1016/s0168-9002(98)00469-0 article EN Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment 1998-08-01
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