W. M. Morse
A5103625316- Particle physics theoretical and experimental studies
- Particle accelerators and beam dynamics
- Superconducting Materials and Applications
- Muon and positron interactions and applications
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Atomic and Subatomic Physics Research
- Particle Accelerators and Free-Electron Lasers
- Dark Matter and Cosmic Phenomena
- Particle Detector Development and Performance
- Neutrino Physics Research
- Computational Physics and Python Applications
- Nuclear Physics and Applications
- Advanced Data Storage Technologies
- Parallel Computing and Optimization Techniques
- Nuclear physics research studies
- Gyrotron and Vacuum Electronics Research
- Scientific Research and Discoveries
- Distributed and Parallel Computing Systems
- Quantum, superfluid, helium dynamics
- Radiation Detection and Scintillator Technologies
- Black Holes and Theoretical Physics
- Life Cycle Costing Analysis
- Spacecraft and Cryogenic Technologies
- Fusion materials and technologies
Brookhaven College
2011-2024
Brookhaven National Laboratory
2009-2023
Fermi National Accelerator Laboratory
2017
United States Department of Energy
2015
Cornell University
1998-2009
University of Groningen
2009
Yale University
1988-2003
Associated Universities, Inc.
1983
A precise measurement of the anomalous g value, a(mu) = (g-2)/2, for positive muon has been made at Brookhaven Alternating Gradient Synchrotron. The result a(mu+) 11 659 202(14) (6) x 10(-10) (1.3 ppm) is in good agreement with previous measurements and an error one third that combined data. current theoretical value from standard model a(mu)(SM) 159.6(6.7) (0.57 a(mu)(exp) - 43(16) which world average experimental value.
A new highly sensitive method of looking for electric dipole moments charged particles in storage rings is described. The major systematic errors inherent the are addressed and ways to minimize them suggested. It seems possible measure muon EDM levels that test speculative theories beyond standard model.
Received 22 August 2002DOI:https://doi.org/10.1103/PhysRevLett.89.129903©2002 American Physical Society
The value of $\frac{{\ensuremath{\epsilon}}^{\ensuremath{'}}}{\ensuremath{\epsilon}}$, a measure the $\mathrm{CP}$-nonconserving direct transition from ${K}_{L}^{0}$ state to isospin-2 two pions, was determined be 0.0017\ifmmode\pm\else\textpm\fi{}0.0082, result that excludes interesting models $\mathrm{CP}$ nonconservation.
A "resonance method" of measuring the electric dipole moment (EDM) nuclei in storage rings is described, based on two new ideas: (1) Oscillating particles' velocities resonance with spin precession, and (2) alternately producing sub-beams different betatron tunes--one sub-beam to amplify thus make it easier correct ring imperfections that produce false signals imitating EDM signals, other measurement.
Static electric dipole moments of nondegenerate systems probe mass scales for physics beyond the Standard Model well those reached directly at high energy colliders. Discrimination between different models, however, requires complementary searches in atomic-molecular-and-optical, nuclear and particle physics. In this report, we discuss current status prospects near future a compelling suite such experiments, along with developments needed encompassing theoretical framework.
The muon anomalous magnetic moment has been measured in a new experiment at Brookhaven. Polarized muons were stored superferric ring, and the angular frequency difference, ${\ensuremath{\omega}}_{a}$, between spin precession orbital frequencies was determined by measuring time distribution of high-energy decay positrons. ratio $R$ ${\ensuremath{\omega}}_{a}$ to Larmor free protons, ${\ensuremath{\omega}}_{p}$, storage-ring field measured. We find...
A concise demonstrative summary of the Symmetric Hybrid ring design for storage proton electric dipole moment experiment is presented. Critical issues such as lattice design, background electrical fields,geometrical phase, general relativity, spin coherence time and polarimeter systematics are Overall, we find that with currently proposed iteration, systematic error sources reduced by orders magnitude alignment requirements within available technology.
An rf Wien filter (WF) can be used in a storage ring to measure particle's electric dipole moment (EDM). If the WF frequency equals spin precession without WF, and oscillating fields are chosen so that corresponding transverse Lorentz force zero, then large source of systematic errors is canceled but EDM signal not. This effect, discovered by simulation, called ``partially frozen spin'' effect.
The anomalous magnetic moment of the muon is one most precisely measured quantities in experimental particle physics. Its latest measurement at Brookhaven National Laboratory deviates from Standard Model expectation by approximately 3.5 standard deviations. goal new experiment, E989, now under construction Fermilab, a fourfold improvement precision. Here, we discuss details future and its current status.
We report on a search for the flavor-changing neutral-current decays ${K}_{L}^{0}$\ensuremath{\rightarrow}\ensuremath{\mu}+e and ${K}_{L}^{0}$\ensuremath{\rightarrow}e+e. Limits obtained these processes are B(${K}_{L}^{0}$\ensuremath{\rightarrow}\ensuremath{\mu}+e)6.7\ifmmode\times\else\texttimes\fi{}${10}^{\mathrm{\ensuremath{-}}9}$ B(${K}_{L}^{0}$\ensuremath{\rightarrow}e+e)4.5\ifmmode\times\else\texttimes\fi{}${10}^{\mathrm{\ensuremath{-}}9}$ (90% confidence level).
We report on results of a dedicated search for the CP-violating decay ${\mathit{K}}_{\mathit{L}}$\ensuremath{\rightarrow}${\mathrm{\ensuremath{\pi}}}^{0}$${\mathit{e}}^{+}$${\mathit{e}}^{\mathrm{\ensuremath{-}}}$. have found no evidence this mode and obtain 90%-confidence upper limit 5.5\ifmmode\times\else\texttimes\fi{}${10}^{\mathrm{\ensuremath{-}}9}$ its branching ratio.
New measurements are reported for the time dependence of vertical polarization a $0.97\text{ }\text{ }\mathrm{GeV}/\mathrm{c}$ deuteron beam circulating in storage ring and perturbed by an rf solenoid. The is cooler synchrotron (COSY) located at Forschungszentrum J\"ulich. was measured continuously using 1.5 cm thick carbon target edge scintillators EDDA detector. An solenoid mounted on used to generate fields near frequency $1\ensuremath{-}G\ensuremath{\gamma}$ spin resonance. Measurements...
Fermilab is dedicated to hosting world-class experiments in search of new physics that will operate the coming years. The Muon g-2 Experiment one such experiment determine with unprecedented precision muon anomalous magnetic moment, which offers an important test Standard Model. We describe this study accelerator facility deliver a beam experiment. first present lattice design allows for efficient capture, transport, and delivery polarized beams. then numerically examine its performance by...
We describe a proposal to search for an intrinsic electric dipole moment (EDM) of the proton with sensitivity \targetsens, based on vertical rotation polarization stored beam. The New Physics reach is order $10^~3$TeV mass scale. Observation EDM provides best probe CP-violation in Higgs sector, at level that may be inaccessible electron-EDM experiments. improvement $\theta_{QCD}$, parameter crucial axion and dark matter physics, about three orders magnitude.
▪ Abstract The E821 Experiment at the Brookhaven Alternating Gradient Synchrotron has measured muon anomalous magnetic moment a μ to relative precision of 0.5 parts per million. This effort required new beamline, super-ferric storage ring with highly uniform field, field measurement system, and electromagnetic calorimeters record electrons from decay, which carry essential spin precession frequency information. Data obtained over five years resulted in more than nine billion analyzed events,...
We report on a measurement of the branching ratio for ${\mathit{K}}_{\mathit{L}}$ double Dalitz decay ${\mathit{K}}_{\mathit{L}}$\ensuremath{\rightarrow}${\mathit{e}}^{+}$${\mathit{e}}^{\mathrm{\ensuremath{-}}}$${\mathit{e}}^{+}$${\mathit{e}}^{\mathrm{\ensuremath{-}}}$. The result, based observation six events, is B(${\mathit{K}}_{\mathit{L}}$\ensuremath{\rightarrow}${\mathit{e}}^{+}$${\mathit{e}}^{\mathrm{\ensuremath{-}}}$${\mathit{e}}^{+}$${\mathit{e}}^{\mathrm{\ensuremath{-}}}$)...
Results of a search for the decay mode ${K}_{L}^{0}\ensuremath{\rightarrow}\ensuremath{\gamma}\ensuremath{\gamma}\mathrm{ee}$ ${K}_{L}^{0}\ensuremath{\rightarrow}\ensuremath{\gamma}\mathrm{ee}$ with hard internal bremsstrahlung) are reported. The measured branching ratio is (6.6\ifmmode\pm\else\textpm\fi{}3.2) \ifmmode\times\else\texttimes\fi{} ${10}^{\ensuremath{-}7}$, in agreement QED prediction 5.8 ${10}^{\ensuremath{-}7}$. infrared cutoff both ratios requirement that photons have an...