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Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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107 papers · 1 filter
Lessons to be learned from the coherent photoproduction of pseudoscalar mesons
L. J. Abu-Raddad, J. Piekarewicz, A. J. Sarty +1
We study the coherent photoproduction of pseudoscalar mesons---particularly of neutral pions---placing special emphasis on the various sources that put into question earlier nonrel…
Parallelization of a Dynamic Monte Carlo Algorithm: a Partially Rejection-Free Conservative Approach
G. Korniss, M. A. Novotny, P. A. Rikvold
We experiment with a massively parallel implementation of an algorithm for simulating the dynamics of metastable decay in kinetic Ising models. The parallel scheme is directly appl…
The RKKY interactions and the Mott Transition
G. Moeller, V. Dobrosavljevic, A. E. Ruckenstein
A two-site cluster generalization of the Hubbard model in large dimensions is examined in order to study the role of short-range spin correlations near the metal-insulator transiti…
Quantum Chaos in Compact Lattice QED
B. A. Berg, H. Markum, R. Pullirsch
Complete eigenvalue spectra of the staggered Dirac operator in quenched compact QED are studied on and lattices. We investigate the behavior of t…
Measurement of the High-Mass Drell-Yan Cross Section and Limits on Quark-Electron Compositeness Scales
B. Abbott
We present a measurement of the Drell-Yan cross section at high dielectron invariant mass using 120/pb of data collected in pbar-p collisions at sqrt(s) = 1.8 TeV by the D0 collabo…
Large Momentum Transfer Measurements of the Deuteron Elastic Structure Function A(Q^2) at Jefferson Laboratory
The Jefferson Lab Hall A Collaboration, L. C Alexa
The deuteron elastic structure function A(Q^2) has been extracted in the Q^2 range 0.7 to 6.0 (GeV/c)^2 from cross section measurements of elastic electron-deuteron scattering in c…
Associated Higgs Production in the MSSM
S. Dawson, L. Reina
We investigate the inclusive production of the Higgs bosons of the minimal supersymmetric model with a heavy quark pair, ( and ), in e^+e^- collisions at hi…
Stripes and the t-J model
C. Stephen Hellberg, Efstratios Manousakis
We investigate the two-dimensional t-J model at a hole doping of x = 1/8 and J/t = 0.35 with exact diagonalization. The low-energy states are uniform (not striped). We find numerou…
Magnetic field independence of the spin gap in YBa_2Cu_3O_{7-delta}
K. Gorny, O. M. Vyaselev, J. A. Martindale +8
We report, for magnetic fields of 0, 8.8, and 14.8 Tesla, measurements of the temperature dependent ^{63}Cu NMR spin lattice relaxation rate for near optimally doped YBa_2Cu_3O_{7-…
Simulation of Magnetization Switching in Biaxial Single-Domain Ferromagnetic Particles
Xuekun Kou, M. A. Novotny, Per Arne Rikvold
The magnetization switching dynamics of biaxial single-domain homogeneous ferromagnetic particles, in which the two easy axes are perpendicular to each other, is simulated using a…
Energy barriers of spin glasses from multi-overlap simulations
Wolfhard Janke, Bernd A. Berg, Alain Billoire
We report large-scale simulations of the three-dimensional Edwards-Anderson Ising spin glass system using the recently introduced multi-overlap Monte Carlo algorithm. In this appro…
Test of the Kolmogorov-Johnson-Mehl-Avrami picture of metastable decay in a model with microscopic dynamics
Raphael A. Ramos, Per Arne Rikvold, M. A. Novotny
The Kolmogorov-Johnson-Mehl-Avrami (KJMA) theory for the time evolution of the order parameter in systems undergoing first-order phase transformations has been extended by Sekimoto…
A study of chiral symmetry in quenched QCD using the Overlap-Dirac operator
Robert G. Edwards, Urs M. Heller, Rajamani Narayanan
We compute fermionic observables relevant to the study of chiral symmetry in quenched QCD using the Overlap-Dirac operator for a wide range of the fermion mass. We use analytical r…
Search for the Standard Model Higgs boson at the LEP2 collider near sqrt(S) = 183GeV
ALEPH Collaboration
During 1997 the ALEPH experiment at LEP gathered 57pb^-1 of data at centre-of- mass energies near 183 GeV. These data are used to look for possible signals from the production of t…
Critical behavior of the planar magnet model in three dimensions
K. Nho, E. Manousakis
We use a hybrid Monte Carlo algorithm in which a single-cluster update is combined with the over-relaxation and Metropolis spin re-orientation algorithm. Periodic boundary conditio…
Monolayer Solid Helium-4 Clusters on Graphite
M. E. Pierce, E. Manousakis
In order to resolve the controversy about the low density region of the phase diagram of the 4He monolayer on graphite, we have undertaken a path integral Monte Carlo study of the…
Study of D0-Dbar0 mixing and D0 doubly cabibbo-suppressed decays
ALEPH collaboration
Using a sample of four million hadronic Z events collected in ALEPH from 1991 to 1995, the decays D*+ -> D0pi^+_s, with D0 decaying to K-pi+ or to K+pi-, are studied. The relative…
Slow Forcing in the Projective Dynamics Method
M. A. Novotny, M. Kolesik, P. A. Rikvold
We provide a proof that when there is no forcing the recently introduced projective dynamics Monte Carlo algorithm gives the exact lifetime of the metastable state, within statisti…
Search for High Mass Photon Pairs in p-pbar --> gamma-gamma-jet-jet Events at sqrt(s)=1.8 TeV
D0 Collaboration, B. Abbott
A search has been carried out for events in the channel p-barp --> gamma gamma jet jet. Such a signature can characterize the production of a non-standard Higgs boson together with…
Top Quark Physics at the Tevatron
P. Bhat, H. Prosper, S. Snyder
The discovery of the top quark in 1995, by the CDF and D0 collaborations at the Fermilab Tevatron, marked the dawn of a new era in particle physics. Since then, enormous efforts ha…
Microscopic Spectral Density of the Dirac Operator in Quenched QCD
P. H. Damgaard, U. M. Heller, A. Krasnitz
Measurements of the lowest-lying eigenvalues of the staggered fermion Dirac operator are made on ensembles of equilibrium gauge field configurations in quenched SU(3) lattice gauge…
Spectrum of the Hermitian Wilson Dirac operator
Rajamani Narayanan
Recent results on the spectral properties of the Hermitian Wilson-Dirac operator are presented.
Heavy-Light Decay Constants: Conclusions from the Wilson Action
MILC Collaboration, C. Bernard, T. DeGrand +9
We report on the results of a MILC collaboration calculation of , , , and their ratios. We discuss the most important errors in more detail than we hav…
Light hadron spectrum with Kogut-Susskind quarks
MILC Collaboration, C. Bernard, C. DeTar +7
We made an extensive study of the light hadron spectrum using the Wilson gauge action and Kogut-Susskind quarks. Using both dynamical quarks and the quenched approximation, we dete…