R. McCrady
A5083194401- Particle accelerators and beam dynamics
- Quantum Chromodynamics and Particle Interactions
- Particle Accelerators and Free-Electron Lasers
- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Superconducting Materials and Applications
- Gyrotron and Vacuum Electronics Research
- Magnetic confinement fusion research
- Nuclear physics research studies
- Nuclear Physics and Applications
- Dark Matter and Cosmic Phenomena
- Advanced NMR Techniques and Applications
- Quantum, superfluid, helium dynamics
- Atomic and Subatomic Physics Research
- Atomic and Molecular Physics
- Advanced Chemical Physics Studies
- Pulsed Power Technology Applications
- Black Holes and Theoretical Physics
- Particle Detector Development and Performance
- Radioactive Decay and Measurement Techniques
- Advanced Frequency and Time Standards
- Laser-Plasma Interactions and Diagnostics
- Electrostatic Discharge in Electronics
- Radiation Therapy and Dosimetry
- Nuclear reactor physics and engineering
Los Alamos National Laboratory
2010-2022
Los Alamos National Security (United States)
2002-2014
Carnegie Mellon University
1991-2001
Forschungszentrum Jülich
1997-2000
Uppsala University
1997-2000
European Organization for Nuclear Research
2000
University of Freiburg
2000
University of California, Berkeley
1999-2000
University of Illinois System
2000
Karlsruhe University of Education
1999
The E885 Collaboration utilized the 1.8GeV/cK− beam line at Alternating Gradient Synchrotron (AGS) to accumulate greater than 10 times world's existing data sample of (K−,K+) events on carbon. A total about 3×105(K−,K+) were collected and analyzed. Ξ hypernuclear states are expected be produced through reaction K−+12→CK++12ΞBe. signal could also result from direct production 11ΛBe+Λ without a distinct intermediate state. measured missing-mass spectrum indicates existence below threshold for...
Data obtained by the associated production of \ensuremath{\Lambda} hypernuclei through (${\mathrm{\ensuremath{\pi}}}^{+}$,${\mathit{K}}^{+}$) reaction are presented for a wide range mass numbers. The special features which make this useful pointed out. is shown to be an excellent probe single-particle states, as demonstrated excitation deeply bound states interpreted weak coupling neutron-hole core. binding energies and ground-state cross sections...
We present a measurement and partial wave analysis of the final state K L Ϯ ϯ p ¯p annihilation at rest in liquid hydrogen.This reaction is important for study ¯K decay mode scalar resonances, particular, isovectors 0 (980) (1450).The determination (1450) production also fixes coupling isoscalar f (1500) which discussed as glueball.We find B"p →a (1450);a (1450)→K ¯K…ϭ(8.88Ϯ1.68)ϫ10Ϫ4 hence ¯p→ (1500); (1500)→K ¯K…ϭ(4.52Ϯ0.36)ϫ10 Ϫ4 .The mass width are mϭ1480Ϯ30 MeV/c 2 ⌫ϭ265Ϯ15 ,...
A high-sensitivity search for the strangeness $S\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}\ensuremath{-}2$ $H$ dibaryon $(\mathrm{uuddss})$ was conducted at Brookhaven Alternating Gradient Synchrotron (AGS) using reaction $^{3}H\mathrm{e}({K}^{\ensuremath{-}}{,K}^{+})\mathrm{Hn}$ ${P}_{{K}^{\ensuremath{-}}}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}1.8\mathrm{GeV}/c$. The sensitivity independent of lifetime and decay modes. No evidence production observed. In a mass range...
The annihilation channel pp → KLKSπ0π0 was studied with the Crystal Barrel detector at LEAR. This final state negative C-parity is dominated by strange resonances K∗(892), K1(1270), K1(1400) and K0∗(1430). In addition, a JPC = 1+− seen in K∗K decay mode. could be isoscalar, axialvector h′1 here mass of m (1440 ± 60) MeV/c2 width Γ (170 80) MeV/c2.
The parameter α=−0.052±0.020 describing the shape of η→3π0 Dalitz plot has been determined using data from Crystal Barrel detector at LEAR. value is compared to predictions chiral perturbation theory.
The π0 momentum dependence of the decay η→π+π−π0 has been measured with Crystal Barrel detector. analysis is based on 3230 events. results this independent measurement are compared to new chiral perturbation theory calculations and previous measurements.
We report on precision measurements of the cross sections for reactions p¯p→Λ¯Λ, p¯p→Λ¯Σ0, and p¯p→Σ¯0Λ in region below 5 MeV excess kinetic energy above reaction threshold. For p¯p→Λ¯Λ measurement, data represent a third definitive scan through threshold by this experiment. Improvements detector system analysis techniques, coupled with greatly increased statistics, have negated question existence near-threshold resonance as had been indicated our earlier, lower-statistics studies. The high...
A partial wave analysis of p̄p → π0π0η′ has been performed using the η′ π0π0η and γγ decay modes. The data are dominated by an recoiling against (ππ) S-wave. In addition, α2 (1320) η′π0 is needed. There evidence for contributions from α0(1450) η′π0. branching ratio with respect to ηπ0 consistent prediction SU(3).
A strangelet search in Si+Pt and Au+Pt collisions at alternating-gradient synchrotron (AGS) energies, using a focusing spectrometer, sensitive to mass per charge of 3-14 GeV/c2 was conducted during the 1992 1993 heavy ion runs AGS. The null results thereof are presented as upper limits on invariant production cross section, range 10−5-10−4 mb c3/GeV2, model dependent sensitivity 10−7-10−5 collision. Measurements sections several nonstrange nuclear systems, from p 7Be 8Li, background search,...