A5061591259- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- Stellar, planetary, and galactic studies
- High-Energy Particle Collisions Research
- Atomic and Subatomic Physics Research
- Astro and Planetary Science
- Muon and positron interactions and applications
- Traumatic Ocular and Foreign Body Injuries
- Air Quality and Health Impacts
- Gamma-ray bursts and supernovae
- Scientific Research and Discoveries
- Neutrino Physics Research
- Noncommutative and Quantum Gravity Theories
- Dark Matter and Cosmic Phenomena
- Superconducting Materials and Applications
- Agricultural safety and regulations
- Facial Trauma and Fracture Management
- Recycling and Waste Management Techniques
- Food Waste Reduction and Sustainability
- Material Properties and Processing
- Rabies epidemiology and control
- Ear and Head Tumors
- Medical Imaging Techniques and Applications
- Computational Physics and Python Applications
- Financial Crisis of the 21st Century
University of California, Los Angeles
2021-2023
University of Hong Kong
2022
Cheikh Anta Diop University
2019-2021
Brown University
2018
Boston University
2002-2009
Tokyo Institute of Technology
2003
Oak Ridge National Laboratory
1996
University of Kent
1996
Kent and Canterbury Hospital
1996
We present the final report from a series of precision measurements muon anomalous magnetic moment, ${a}_{\ensuremath{\mu}}=(g\ensuremath{-}2)/2$. The details experimental method, apparatus, data taking, and analysis are summarized. Data obtained at Brookhaven National Laboratory, using nearly equal samples positive negative muons, were used to deduce ${a}_{\ensuremath{\mu}}(\mathrm{\text{Expt}})=11659208.0(5.4)(3.3)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}10}$, where...
The anomalous magnetic moment of the negative muon has been measured to a precision 0.7 ppm (ppm) at Brookhaven Alternating Gradient Synchrotron. This result is based on data collected in 2001, and over an order magnitude more precise than previous measurement for muon. a(mu(-))=11 659 214(8)(3) x 10(-10) (0.7 ppm), where first uncertainty statistical second systematic, consistent with measurements anomaly positive average a(mu)(exp)=11 208(6) (0.5 ppm).
Three independent searches for an electric dipole moment (EDM) of the positive and negative muons have been performed, using spin precession data from muon g-2 storage ring at Brookhaven National Laboratory. Details on experimental apparatus three analyses are presented. Since individual results muon, as well combined result, d=-0.1(0.9)E-19 e-cm, all consistent with zero, we set a new EDM limit, |d| < 1.9E-19 e-cm (95% C.L.). This represents factor 5 improvement over previous best limit EDM.
A higher precision measurement of the anomalous g value, a(mu)=(g-2)/2, for positive muon has been made at Brookhaven Alternating Gradient Synchrotron, based on data collected in year 2000. The result a(mu(+))=11 659 204(7)(5)x10(-10) (0.7 ppm) is good agreement with previous measurements and an error about one-half that combined data. present world average experimental value a(mu)(expt)=11 203(8)x10(-10) ppm).
Received 22 August 2002DOI:https://doi.org/10.1103/PhysRevLett.89.129903©2002 American Physical Society
The spin precession frequency of muons stored in the $(g-2)$ storage ring has been analyzed for evidence Lorentz and CPT violation. Two violation signatures were searched for: a nonzero $\Delta\omega_{a}$ (=$\omega_{a}^{\mu^{+}}-\omega_{a}^{\mu^{-}}$); sidereal variation $\omega_{a}^{\mu^{\pm}}$. No significant effect is found, following limits on standard-model extension parameters are obtained: $b_{Z} =-(1.0 \pm 1.1)\times 10^{-23}$ GeV; $(m_{\mu}d_{Z0}+H_{XY}) = (1.8 6.0 \times 10^{-23})$...
Abstract We conducted a search for technosignatures in 2018 and 2019 April with the L -band receiver (1.15–1.73 GHz) of 100 m diameter Green Bank Telescope. These observations focused on regions surrounding 31 Sun-like stars near plane Galaxy. present results our narrowband signals this data set, as well improvements to processing pipeline. Specifically, we applied an improved candidate signal detection procedure that relies topographic prominence power, which nearly doubles count some...
Blower, P. J.; Lam, A.; Kettle, A. G.; Knapp, F. Jr.; O'Doherty, M. Coakley, J. Author Information
Two signals of CPT/Lorentz violation have been searched for in data collected the muon (9-2) experiment E821 at Brookhaven Lab AGS. Muons 3.1 GeV/c were stored a magnetic storage ring, and their spin precession frequency wa relative to momentum was measured. The difference average frequencies p+ prestricts Standard-Model Extension parameter b Z . non-observation sidereal variation over severalmonth collection period restricts parameters b: *
Abstract We used 22 μ m (W4) Wide-field Infrared Survey Explorer (WISE) observations of 4420 asteroids to analyze lightcurves, and determined spin period estimates for 1929 asteroids. fit second-order Fourier models at a large number trial frequencies the W4 data analyzed resulting periodograms. initially excluded rotational exceeding 7.57 rotations per day ( P < 3.17 hr), which are not sampled adequately by WISE, periods that exceed twice WISE observation interval, is typically 36 hr....
Abstract We used the reparameterized Near-Earth Asteroid Thermal Model to model observations of a curated set over 4000 asteroids from Wide-field Infrared Survey Explorer in two wavelength bands (W2–3 or W3–4) and compared results previous all four (W1–4). This comparison was done with goal elucidating unique aspects modeling two-band so that any potential biases shortcomings for planned surveys (e.g., NASA Object Surveyor Mission) can be anticipated quantified. The W2–3 fits usually yielded...
In this work, we consider the effect of cosmological constant on galactic halo size. As a model, study general relativistic derivation orbits in Schwarzschild-de Sitter metric. We find that there exists length scale $r_Λ$ corresponding to maximum size circular orbit test mass gravitationally bound system, which is geometric mean horizon squared, and Schwarzschild radius. This agrees well with when effects dark matter are included. The larger structures such as clusters superclusters also...
We used 22 $\mu$m (W4) Wide-field Infrared Survey Explorer (WISE) observations of 4420 asteroids to analyze lightcurves and determined spin period estimates for 1929 asteroids. fit second-order Fourier models at a large number trial frequencies the W4 data analyzed resulting periodograms. initially excluded rotational exceeding 7.57 rotations per day (P < 3.17 hr), which are not sampled adequately by WISE, periods that exceed twice WISE observation interval, is typically 36 hr. Three...
The muon (g 2) experiment E821 is currently in progress at Brookhaven National Laboratory. Four data-taking runs for positive muons and one run negative were successfully accomplished 19972000 2001, respectively. Results of the have been published, thus completing our µ + . Data analysis 2001 progress. To provide measurement a = ½(g same level accuracy as +, we would need more run. PACS Nos.: 31.15Pf, 31.30Jv, 32.10Hq