Showing 1999Show all

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hep-ph1999★ 1 cited

Technicolor Signatures at the High Energy Muon Collider

Kenneth Lane

I discuss high mass signatures of technicolor that would be observable at a very high energy muon collider. Most intriguing is the spectrum of spin-one technihadrons, rho_T, omega_…

astro-ph1999★ 13 cited

Space VLBI Observations of 3C371

Jose-Luis Gomez, Alan P. Marscher

We present the first space VLBI observations of 3C~371, carried out at a frequency of 4.8 GHz. The combination of the high resolution provided by the orbiting antenna Highly Advanc…

hep-ex1999★ 27 cited

Hard Single Diffraction in pbarp Collisions at root-s = 630 and 1800 GeV

The D0 Collaboration, B. Abbott

Using the D0 detector, we have studied events produced in proton-antiproton collisions that contain large forward regions with very little energy deposition (``rapidity gaps'') and…

hep-ex1999★ 67 cited

Precise measurement of the b-quark fragmentation function in Z0 boson decays

The SLD Collaboration, Kenji Abe

We have developed a new technique for inclusive reconstruction of the energy of B hadrons. The excellent efficiency and resolution of this technique allow us to make the most preci…

hep-lat1999★ 1 cited

Preliminary Results with Lattice Covariant Gauge

L. Giusti, M. L. Paciello, S. Petrarca +1

In this poster we present a few preliminary results obtained using our method to fix generic covariant gauges on the lattice. We have computed the gluon propagator and we have foun…

astro-ph1999

Collisions in compact star clusters

Simon Portegies Zwart

The high stellar densities in young compact star clusters, such as the star cluster R 136 in the 30 Doradus region, may lead to a large number of stellar collisions. Such collision…

cond-mat.stat-mech1999★ 4 cited

Particle Systems with Stochastic Passing

I. Ispolatov, P. L. Krapivsky

We study a system of particles moving on a line in the same direction. Passing is allowed and when a fast particle overtakes a slow particle, it acquires a new velocity drawn from…

adap-org1999

Fitness versus Longevity in Age-Structured Population Dynamics

W. Hwang, P. L. Krapivsky, S. Redner

We examine the dynamics of an age-structured population model in which the life expectancy of an offspring may be mutated with respect to that of the parent. While the total popula…

astro-ph1999

SNEWS: A Neutrino Early Warning System for Galactic SN II

Alec Habig

The detection of neutrinos from SN1987A confirmed the core-collapse nature of SN II, but the neutrinos were not noticed until after the optical discovery. The current generation of…

hep-ex1999★ 78 cited

The Isolated Photon Cross Section in p pbar Collisions at sqrt(s) = 1.8 TeV

D0 Collaboration, B. Abbott

We report a new measurement of the cross section for the production of isolated photons, with transverse energies (ET) above 10 GeV and pseudorapidities |eta| < 2.5, in p pbar coll…

cond-mat.stat-mech1999★ 269 cited

Economic Fluctuations and Diffusion

Vasiliki Plerou, Parameswaran Gopikrishnan, Luis. A. Nunes Amaral +2

Stock price changes occur through transactions, just as diffusion in physical systems occurs through molecular collisions. We systematically explore this analogy and quantify the r…

astro-ph1999★ 18 cited

Physical State of Molecular Gas in High Galactic Latitude Translucent Clouds

James G. Ingalls, T. M. Bania, Adair P. Lane +2

The rotational transitions of carbon monoxide (CO) are the primary means of investigating the density and velocity structure of the molecular interstellar medium. Here we study the…

hep-th1999★ 65 cited

Creation and evolution of magnetic helicity

R. Jackiw, So-Young Pi

Projecting a non-Abelian SU(2) vacuum gauge field - a pure gauge constructed from the group element U - onto a fixed (electromagnetic) direction in isospace gives rise to a nontriv…

cond-mat.stat-mech1999★ 67 cited

Power-law Distribution of Family Names in Japanese Societies

Sasuke Miyazima, Youngki Lee, Tomomasa Nagamine +1

We study the frequency distribution of family names. From a common data base, we count the number of people who share the same family name. This is the size of the family. We find…

hep-lat1999★ 15 cited

Hamiltonian domain wall fermions at strong coupling

Richard C. Brower, Benjamin Svetitsky

We apply strong-coupling perturbation theory to gauge theories containing domain-wall fermions in Shamir's surface version. We construct the effective Hamiltonian for the color-sin…

hep-ex1999★ 22 cited

A Measurement of the W to tau+nu Production Cross Section in p-pbar Collisions at sqrt(s) = 1.8 TeV

D0 Collaboration, B. Abbott

We report on a measurement of sigma(p-pbar to W+X) times B(W to tau+nu) in p-pbar collisions at sqrt(s) = 1.8 TeV at the Fermilab Tevatron. The measurement is based on an integrate…

hep-ex1999★ 22 cited

Limits on Anomalous WWgamma and WWZ Couplings from WW/WZ->enujj Production

D0 collaboration, B. Abbott, M. Abolins

Limits on anomalous WWgamma and WWZ couplings are presented from a study of WW/WZ->enujj events in ppbar collisions at sqrt{s}=1.8 TeV. Results from the analysis of data collected…

hep-ex1999★ 37 cited

Probing BFKL Dynamics in the Dijet Cross Section at Large Rapidity Intervals in ppbar Collisions at sqrt{s}=1800 and 630 GeV

D0 Collaboration, B. Abbott

Inclusive dijet production at large pseudorapidity intervals (delta_eta) between the two jets has been suggested as a regime for observing BFKL dynamics. We have measured the dijet…

hep-ex1999★ 12 cited

Limits on Quark Compositeness from High Energy Jets in PbarP Collisions at 1.8 TeV

D0 collaboration, B. Abbott

Events in PbarP collisions at sqrt(s)=1.8 TeV with total transverse energy exceeding 500 GeV are used to set limits on quark substructure. The data are consistent with next-to-lead…

cond-mat.mes-hall1999★ 11 cited

Non-equilibrium tunneling into general quantum Hall edge states

Joel E. Moore, Prashant Sharma, Claudio Chamon

In this paper we formulate the theory of tunneling into general Abelian fractional quantum Hall edge states. In contrast to the simple Laughlin states, a number of charge transfer…

astro-ph1999

Merger rates of black hole binaries: prospects for gravitational wave detectors

Simon Portegies Zwart, Stephen McMillan

Mergers of black-hole binaries are expected to release large amounts of energy in the form of gravitational radiation. However, binary evolution models predict merger rates too low…

astro-ph1999★ 664 cited

Black hole mergers in the universe

Simon Portegies Zwart, Stephen McMillan

Mergers of black-hole binaries are expected to release large amounts of energy in the form of gravitational radiation. However, binary evolution models predict merger rates too low…

physics.flu-dyn1999★ 63 cited

On acoustic cavitation of slightly subcritical bubbles

Anthony Harkin, Ali Nadim, Tasso J. Kaper

The classical Blake threshold indicates the onset of quasistatic evolution leading to cavitation for gas bubbles in liquids. When the mean pressure in the liquid is reduced to a va…

hep-lat1999★ 2 cited

From Black Holes to Glueballs: The QCD_3 Tensor Glueball at Strong Coupling

Richard C. Brower, Samir D. Mathur, Chung-I Tan

A strong coupling calculation of glueball masses based on the duality between supergravity and Yang-Mills theory is presented. Earlier work is extended to non-zero spin. Fluctuatio…