Showing 1999Show all

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hep-th1999★ 25 cited

Lectures on Supersymmetric Yang-Mills Theory and Integrable Systems

Eric D'Hoker, D. H. Phong

We present a series of four self-contained lectures on the following topics: (I) An introduction to 4-dimensional 1\leq N \leq 4 supersymmetric Yang-Mills theory, including particl…

hep-ph1999

Virtual Compton Scattering at High Energy

Zhang Chen

In this dissertation we develop a theoretical framework in the context of perturbative QuantumChromoDynamics (pQCD) for studying non-forward scattering processes. In particular, we…

hep-ex1999★ 13 cited

Search for a 33.9 MeV/c^2 Neutral Particle in Pion Decay

J. A. Formaggio, E. D. Zimmerman, T. Adams +41

The E815 (NuTeV) neutrino experiment has performed a search for a 33.9 MeV/c^2 weakly-interacting neutral particle produced in pion decay. Such a particle may be responsible for an…

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-th1999★ 6 cited

Spin Chain Models with Spectral Curves from M theory

I. Krichever, D. H. Phong

We construct the integrable model corresponding to the supersymmetric SU(N) gauge theory with matter in the antisymmetric representation, using the spectral curve found by L…

astro-ph1999★ 358 cited

The FIRST Bright Quasar Survey. II. 60 Nights and 1200 Spectra Later

R. L. White, R. H. Becker, M. D. Gregg +11

We have used the VLA FIRST survey and the APM catalog of the POSS-I plates as the basis for constructing a new radio-selected sample of optically bright quasars. This is the first…

math.AG1999★ 14 cited

Irreducible components of characteristic varieties

Gregory G. Smith

We give a dimension bound on the irreducible components of the characteristic variety of a system of linear partial differential equations defined from a suitable filtration of the…

astro-ph1999★ 50 cited

The Hubble Deep Field South - STIS Imaging

J. P. Gardner, S. A. Baum, T. M. Brown +18

We present the imaging observations made with the Space Telescope Imaging Spectrograph of the Hubble Deep Field - South. The field was imaged in 4 bandpasses: a clear CCD bandpass…

math.CO1999

Enumeration of lozenge tilings of hexagons with a central triangular hole

Mihai Ciucu, Theresia Eisenkölbl, C. Krattenthaler +1

We deal with unweighted and weighted enumerations of lozenge tilings of a hexagon with side lengths , where an equilateral triangle of side length has been r…

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…

nucl-th1999★ 26 cited

The directed flow maximum near c_s=0

J. Brachmann, A. Dumitru, H. Stöcker +1

We investigate the excitation function of quark-gluon plasma formation and of directed in-plane flow of nucleons in the energy range of the BNL-AGS and for the E(Lab)=40AGeV Pb+Pb…

math.GT1999★ 6 cited

Brunnian links are determined by their complements

Brian Mangum, Theodore Stanford

If L_1 and L_2 are two Brunnian links with all pairwise linking numbers 0, then we show that L_1 and L_2 are equivalent if and only if they have homeomorphic complements. In partic…

hep-ph1999★ 39 cited

Hydrodynamics of nuclear matter in the chiral limit

D. T. Son

Using the Poisson bracket method, we construct the hydrodynamics of nuclear matter in the chiral limit, which describes the dynamics of all low-energy degrees of freedom, including…

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…

astro-ph1999★ 183 cited

Prompt and delayed emission properties of Gamma-Ray Bursts observed with BeppoSAX

F. Frontera, L. Amati, E. Costa +14

We investigated the spectral evolution in the 2--700 keV energy band of Gamma-Ray Bursts (GRBs) detected by the Gamma-Ray Burst Monitor (GRBM) and localized with the Wide Field Cam…

cond-mat.mes-hall1999★ 57 cited

Inelastic Light Scattering by Gap Excitations of Fractional Quantum Hall States at 1/3 <= ν<= 2/3

Moonsoo Kang, A. Pinczuk, B. S. Dennis +3

We report observations of collective gap excitations of the fractional quantum Hall (FQH) states at filling factors ν=p/(2p+1) (p=integer), for 1/3 <= ν<= 2/3, by inelastic light s…

hep-ph1999

Hadron yields from thermalized minijets at RHIC and LHC

N. Hammon, H. Stöcker, W. Greiner +1

We calculate the yields of pions, kaons, and -mesons for RHIC and LHC energies assuming thermodynamical equilibration of the produced minijets, and using as input results from p…

astro-ph1999

A New View on Young Pulsars in Supernova Remnants: Slow, Radio-quiet, & X-ray Bright

E. V. Gotthelf, G. Vasisht

We propose a simple explanation for the apparent dearth of radio pulsars associated with young supernova remnants (SNRs). Recent X-ray observations of young remnants have revealed…

astro-ph1999★ 250 cited

Observations of 20 millisecond pulsars in 47 Tucanae at 20 cm

F. Camilo, D. R. Lorimer, P. Freire +2

We have used a new observing system on the Parkes radio telescope to carry out a series of pulsar observations of the globular cluster 47 Tucanae at 20-cm wavelength. We detected a…

hep-ph1999★ 4 cited

Small-x Physics, High Parton Densities and Parton Saturation in QCD

A. H. Mueller

Partons are defined as the quanta in a Fock space description of a hadron. Gluon saturation is described in the Weizsäcker-Williams approximation for a large nucleus. The elements…

astro-ph1999★ 193 cited

A Multi-Component Measurement of the Cosmic Ray Composition Between 10^{17} eV and 10^{18} eV

T. Abu-Zayyad, K. Belov, D. J. Bird +45

The average mass composition of cosmic rays with primary energies between eV and eV has been studied using a hybrid detector consisting of the High Resolution Fly…