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19922026
Showing 2004Show all

104 papers · 1 filter

astro-ph2004★ 81 cited

Correlation between the TeV and X-ray emission in high--energy peaked BL Lac objects

K. Katarzynski, G. Ghisellini, F. Tavecchio +3

We discuss the correlation between the evolution of the TeV emission and X-ray radiation observed in high-energy peaked BL Lac objects. We describe such a correlation by a simple p…

astro-ph2004★ 187 cited

Transforming observational data and theoretical isochrones into the ACS/WFC Vega-mag system

Luigi R. Bedin, Santi Cassisi, Fiorella Castelli +6

We propose a zero-point photometric calibration of the data from the ACS/WFC on board the Hubble Space Telescope, based on a spectrum of Vega and the most up to date in-flight tran…

nucl-ex2004★ 181 cited

K(892)* Resonance Production in Au+Au and p+p Collisions at sqrt(sNN) = 200 GeV at RHIC

STAR Collaboration, J. Adams

The short-lived resonance provides an efficient tool to probe properties of the hot and dense medium produced in relativistic heavy-ion collisions. We report measureme…

astro-ph2004★ 1 cited

Radiative Effects on Particle Acceleration in Electromagnetic Dominated Outflows

Koichi Noguchi, Edison Liang, Kazumi Nishimura

Plasma outflows from gamma-ray bursts (GRB), pulsar winds, relativistic jets, and ultra-intense laser targets radiate high energy photons. However, radiation damping is ignored in…

astro-ph2004★ 10 cited

Forbidden Line Emission in the Eccentric Spectroscopic Binaries DQ Tauri and UZ Tauri E Monitored over an Orbital Period

M. Huerta, P. Hartigan, R. J. White

We present echelle spectroscopy of the close pre-main-sequence binary star systems DQ Tau and UZ Tau-E. Over a 16 day time interval we acquired 14 nights of spectra for DQ Tau and…

astro-ph2004★ 449 cited

Metallicities on the Double Main Sequence of omega Centauri Imply Large Helium Enhancement

Giampaolo Piotto, Sandro Villanova, Luigi R. Bedin +10

Having shown in a recent paper that the main sequence of omega Centauri is split into two distinct branches, we now present spectroscopic results showing that the bluer sequence is…

hep-ex2004★ 12 cited

A Search for Anomalous Heavy-Flavor Quark Production in Association with W Bosons

D0 Collaboration, V. M. Abazov

We present a search for anomalous production of heavy-flavor quark jets in association with a W boson at the Fermilab Tevatron ppbar Collider. This search is conducted through an e…

cond-mat.soft2004★ 17 cited

Polymerization dynamics of double-stranded biopolymers: chemical kinetic approach

Evgeny B. Stukalin, Anatoly B. Kolomeisky

The polymerization dynamics of double-stranded polymers, such as actin filaments, is investigated theoretically using simple chemical kinetic models that explicitly take into accou…

physics.comp-ph2004

Markov Chains of Infinite Order and Asymptotic Satisfaction of Balance: Application to the Adaptive Integration Method

David J. Earl, Michael W. Deem

Adaptive Monte Carlo methods can be viewed as implementations of Markov chains with infinite memory. We derive a general condition for the convergence of a Monte Carlo method whose…

q-bio.MN2004★ 18 cited

Length, Protein-Protein Interactions, and Complexity

Taison Tan, Daan Frenkel, Vishal Gupta +1

The evolutionary reason for the increase in gene length from archaea to prokaryotes to eukaryotes observed in large scale genome sequencing efforts has been unclear. We propose her…

math.AG2004★ 21 cited

Weak approximation over function fields

Brendan Hassett, Yuri Tschinkel

We prove that rationally connected varieties over the function field of a complex curve satisfy weak approximation for places of good reduction.

cond-mat.other2004★ 105 cited

Creating stable molecular condensate using a generalized Raman adiabatic passage scheme

Hong Y. Ling, Han Pu, Brian Seaman

We study the Feshbach resonance assisted stimulated adiabatic passage of an effective coupling field for creating stable molecules from atomic Bose condensate. By exploring the pro…

astro-ph2004★ 161 cited

From Radio to X-ray: Flares on the dMe Flare Star EV Lacertae

R. A. Osten, S. L. Hawley, J. C. Allred +2

We present the results of a campaign to observe flares on the M dwarf flare star EV Lacertae over the course of two days in 2001 September, utilizing a combination of radio continu…

astro-ph2004★ 23 cited

Interpretations of gamma-ray burst spectroscopy. II. Bright BATSE bursts

Felix Ryde, Dan Kocevski, Zsolt Bagoly +2

We analyze the spectral lags of a sample of bright gamma-ray burst pulses observed by CGRO BATSE and compare these with the results of high-resolution spectroscopical investigation…

math.GT2004★ 1 cited

New obstructions to doubly slicing knots

Taehee Kim

A knot in the 3-sphere is called doubly slice if it is a slice of an unknotted 2-sphere in the 4-sphere. We give a bi-sequence of new obstructions for a knot being doubly slice. We…

math.GT2004

Knot concordance and von Neumann -invariants

Tim D. Cochran, Peter Teichner

We prove the nontriviality, at all integral levels n, of the filtration, F_n, of the classical topological knot concordance group recently defined by the authors and Kent Orr [COT]…

cond-mat.str-el2004★ 474 cited

Hall-effect evolution across a heavy-fermion quantum critical point

S. Paschen, T. Luhmann, S. Wirth +6

A quantum critical point (QCP) develops in a material at absolute zero when a new form of order smoothly emerges in its ground state. QCPs are of great current interest because of…

nucl-ex2004★ 283 cited

Pion interferometry in Au+Au collisions at = 200 GeV

STAR Collaboration

We present a systematic analysis of two-pion interferometry in Au+Au collisions at = 200 GeV using the STAR detector at RHIC. We extract the HBT radii and study the…

nucl-ex2004★ 216 cited

Minijet deformation and charge-independent angular correlations on momentum subspace in Au-Au collisions at = 130 GeV

STAR Collaboration, J. Adams

First measurements of charge-independent correlations on angular difference variables (pseudorapidity) and (azimuth) are presented for primary charged hadro…

math.GT2004

Higher-order Alexander invariants and filtrations of the knot concordance group

Tim D. Cochran, Taehee Kim

We establish certain "non-triviality" results for several filtrations of the smooth and topological knot concordance groups. First, as regards the n-solvable filtration of the topo…

hep-ex2004

Measurement of the Top Quark Mass In All-Jet Events

D0 Collaboration, V. M. Abazov

We describe a measurement of the mass of the top quark from the purely hadronic decay modes of t-tbar pairs using all-jet data produced in p-pbar collisions at sqrt{s} = 1.8 TeV at…

hep-ex2004★ 24 cited

A Measurement of the Ratio of Inclusive Cross Sections pp->Z+b-jet/pp->Z+jet at sqrt(s) = 1.96-TeV

D0 Collaboration, V. M. Abazov

Using the data collected with the DZero detector at sqrt(s)=1.96-TeV, for integrated luminosities of about 180 pb^{-1}, we have measured the ratio of inclusive cross sections for p…

hep-ex2004★ 16 cited

Measurements of the Branching Fractions and Decay Distributions for KL->πμνγand KL->πeνγ

T. Alexopoulos, T. Andre, M. Arenton +56

We present measurements of R_Kl3rad = Gamma(KL->π\ellνγ; Egcm > 10 MeV)/Gamma(KL->π\ellν), where ell = mu or e, and Egcm is the photon energy in the kaon rest frame. These measurem…

hep-ex2004★ 32 cited

Measurement of the WW production cross section in p anti-p collisions at s**(1/2) = 1.96 TeV

D0 Collaboration, V. M. Abazov

We present a measurement of the W boson pair-production cross section in p anti-p collisions at a center-of-mass energy of sqrt{s}=1.96 TeV. The data, collected with the Run II DO…