W. Fetscher

ORCID: 0000-0003-2857-7306
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About
Contact & Profiles
Research Areas
  • Particle physics theoretical and experimental studies
  • Neutrino Physics Research
  • Dark Matter and Cosmic Phenomena
  • Quantum Chromodynamics and Particle Interactions
  • Muon and positron interactions and applications
  • Quantum, superfluid, helium dynamics
  • Nuclear Physics and Applications
  • Atomic and Subatomic Physics Research
  • Nuclear physics research studies
  • High-Energy Particle Collisions Research
  • Atomic and Molecular Physics
  • Particle Detector Development and Performance
  • Particle accelerators and beam dynamics
  • Radiation Detection and Scintillator Technologies
  • Computational Physics and Python Applications
  • Superconducting Materials and Applications
  • High-pressure geophysics and materials
  • Advanced NMR Techniques and Applications
  • Astro and Planetary Science
  • Spacecraft and Cryogenic Technologies
  • Quantum optics and atomic interactions
  • Black Holes and Theoretical Physics
  • Astrophysics and Cosmic Phenomena
  • Random lasers and scattering media
  • Inorganic Fluorides and Related Compounds

Institute of Particle Physics
2024

ETH Zurich
2005-2022

Institute for Physics
2021

École Polytechnique Fédérale de Lausanne
2021

Karlsruhe Institute of Technology
1995

Swiss Federal Nuclear Safety Inspectorate
1985-1986

FZI Research Center for Information Technology
1982

University of Zurich
1982

European Organization for Nuclear Research
1978

University of Basel
1978

The Review summarizes much of particle physics and cosmology. Using data from previous editions, plus 3,062 new measurements 721 papers, we list, evaluate, average measured properties gauge bosons the recently discovered Higgs boson, leptons, quarks, mesons, baryons. We summarize searches for hypothetical particles such as supersymmetric particles, heavy bosons, axions, dark photons, etc. All search limits are listed in Summary Tables. also give numerous tables, figures, formulae, reviews...

10.1088/1674-1137/40/10/100001 article EN Chinese Physics C 2016-10-01

The Review summarizes much of particle physics and cosmology. Using data from previous editions, plus 2,873 new measurements 758 papers, we list, evaluate, average measured properties gauge bosons the recently discovered Higgs boson, leptons, quarks, mesons, baryons. We summarize searches for hypothetical particles such as supersymmetric particles, heavy bosons, axions, dark photons, etc. Particle search limits are listed in Summary Tables. give numerous tables, figures, formulae, reviews...

10.1103/physrevd.98.030001 article EN Physical review. D/Physical review. D. 2018-08-17

Abstract The Review summarizes much of particle physics and cosmology. Using data from previous editions, plus 2,143 new measurements 709 papers, we list, evaluate, average measured properties gauge bosons the recently discovered Higgs boson, leptons, quarks, mesons, baryons. We summarize searches for hypothetical particles such as supersymmetric particles, heavy bosons, axions, dark photons, etc. Particle search limits are listed in Summary Tables. give numerous tables, figures, formulae,...

10.1093/ptep/ptac097 article EN cc-by-nc Progress of Theoretical and Experimental Physics 2022-08-01

Abstract The Review summarizes much of particle physics and cosmology. Using data from previous editions, plus 3,324 new measurements 878 papers, we list, evaluate, average measured properties gauge bosons the recently discovered Higgs boson, leptons, quarks, mesons, baryons. We summarize searches for hypothetical particles such as supersymmetric particles, heavy bosons, axions, dark photons, etc. Particle search limits are listed in Summary Tables. give numerous tables, figures, formulae,...

10.1093/ptep/ptaa104 article EN cc-by Progress of Theoretical and Experimental Physics 2020-07-13

The summarizes much of particle physics and cosmology. Using data from previous editions, plus 2,717 new measurements 869 papers, we list, evaluate, average measured properties gauge bosons the recently discovered Higgs boson, leptons, quarks, mesons, baryons. We summarize searches for hypothetical particles such as supersymmetric particles, heavy bosons, axions, dark photons, etc. Particle search limits are listed in Summary Tables. give numerous tables, figures, formulae, reviews topics...

10.1103/physrevd.110.030001 article EN cc-by Physical review. D/Physical review. D. 2024-08-01

This chapter of the report "Flavor in era LHC" Workshop discusses theoretical, phenomenological and experimental issues related to flavor phenomena charged lepton sector conserving CP-violating processes. We review current limits main theoretical models for structure fundamental particles. analyze consequences available data, setting constraints on explicit beyond standard model, presenting benchmarks discovery potential forthcoming measurements both at LHC low energy, exploring options...

10.1140/epjc/s10052-008-0715-2 article EN cc-by-nc The European Physical Journal C 2008-09-01

This biennial Review summarizes much of Particle Physics. Using data from previous editions, plus 2205 new measurements 667 papers, we list, evaluate, and average measured properties gauge bosons, leptons, quarks, mesons, baryons. We also summarize searches for hypothetical particles such as Higgs heavy neutrinos, supersymmetric particles. All the particle search limits are listed in Summary Tables. give numerous tables, figures, formulae, reviews topics Standard Model, detectors,...

10.1103/physrevd.66.010001 article EN Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 2002-07-01

The conclusions of the Physics Working Group international scoping study a future Neutrino Factory and super-beam facility (the ISS) are presented. ISS was carried by community between NuFact05, 7th International Workshop on Factories Superbeams, Laboratori Nazionali di Frascati, Rome, June 21-26, 2005) NuFact06 (Ivine, California, 24{30 August 2006). physics case for an extensive experimental programme to understand properties neutrino is presented role high-precision measurements...

10.1088/0034-4885/72/10/106201 article EN Reports on Progress in Physics 2009-09-29

The results of a new search for positronium decays into invisible final states are reported. Convincing detection this decay mode would be strong evidence physics beyond the standard model (SM): example, existence extra--dimensions, milli-charged particles, light gauge bosons or mirror particles. Mirror matter could relevant dark candidate. In paper setup and experiment presented. collected sample about $(6.31\ifmmode\pm\else\textpm\fi{}0.28)\ifmmode\times\else\texttimes\fi{}{10}^{6}$...

10.1103/physrevd.75.032004 article EN Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D, Particles, fields, gravitation, and cosmology 2007-02-13

The real part of the isospin-even forward-scattering amplitude pion-nucleon scattering has been determined at a pion energy ${T}_{\ensuremath{\pi}}$=55 MeV by measurement elastic positive and negative pions on protons within Coulomb-nuclear interference region. value confirms prediction Karlsruhe-Helsinki phase-shift analysis for that energy. These phases have used to determine \ensuremath{\sigma} term means dispersion relations, resulting in which is contradiction with chiral perturbation...

10.1103/physrevlett.58.648 article EN Physical Review Letters 1987-02-16

The two transverse polarization components ${P}_{{\mathrm{T}}_{1}}$ and ${P}_{{\mathrm{T}}_{2}}$ of the ${e}^{+}$ from decay polarized ${\ensuremath{\mu}}^{+}$ have been measured as a function energy. Their energy averaged values are $⟨{P}_{{\mathrm{T}}_{1}}⟩=(6.3\ifmmode\pm\else\textpm\fi{}7.7\ifmmode\pm\else\textpm\fi{}3.4)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}3}$...

10.1103/physrevlett.94.021802 article EN Physical Review Letters 2005-01-19

The purely leptonic decays ${\ensuremath{\tau}}^{+}\ensuremath{\rightarrow}{\ensuremath{\mu}}^{+}{\ensuremath{\nu}}_{\ensuremath{\mu}}{\overline{\ensuremath{\nu}}}_{\ensuremath{\tau}}$ and ${\ensuremath{\tau}}^{+}\ensuremath{\rightarrow}{e}^{+}{\ensuremath{\nu}}_{e}{\overline{\ensuremath{\nu}}}_{\ensuremath{\tau}}$ are both described by the most general (local, derivative-free, lepton-number-conserving) four-fermion interaction Hamiltonian characterized ten complex coupling constants....

10.1103/physrevd.42.1544 article EN Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 1990-09-01

The physics potential of an intense source low-energy muons is studied. Such a necessary stage towards building the neutrino factories and muon colliders which are being considered at present. CERN Neutrino Factory could deliver beams with intensities 3‐4 orders magnitude higher than available now, large freedom in choice time structure. Low-energy contributes to many fields b asic research, including rare decays, i.e., decays that do not conserve number, measurements fundamental constants,...

10.5170/cern-2004-002.259 preprint EN arXiv (Cornell University) 2001-09-24

The muon decay parameter ${\ensuremath{\xi}}^{\ensuremath{'}\ensuremath{'}}$ has been determined in a measurement of the longitudinal polarization positrons emitted from polarized and depolarized muons. result, ${\ensuremath{\xi}}^{\ensuremath{'}\ensuremath{'}}=0.981\ifmmode\pm\else\textpm\fi{}0.04{5}_{\text{stat}}\ifmmode\pm\else\textpm\fi{}0.00{3}_{\text{syst}}$, is consistent with Standard Model prediction unity, provides an order magnitude improvement relative precision this parameter....

10.1103/physrevd.90.112003 article EN Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D, Particles, fields, gravitation, and cosmology 2014-12-03
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