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Showing 2008Show all

172 papers · 1 filter

hep-ex2008★ 25 cited

Search for anomalous top quark couplings with the D0 detector

D0 Collaboration, V. Abazov

Anomalous Wtb couplings modify the angular correlations of the top quark decay products and change the single top quark production cross section. We present limits on anomalous top…

astro-ph2008★ 100 cited

Correlated variability in the blazar 3C 454.3

E. W. Bonning, C. Bailyn, C. M. Urry +7

The blazar 3C 454.3 was revealed by the Fermi Gamma-ray Space Telescope to be in an exceptionally high flux state in July 2008. Accordingly, we performed a multi-wavelength monitor…

cond-mat.other2008★ 67 cited

Paired states in spin-imbalanced atomic Fermi gases in one dimension

Paata Kakashvili, C. J. Bolech

A growing expertise to engineer, manipulate and probe different cold-atom analogs of electronic condensed matter systems allows to probe properties of exotic pairing. We study pair…

astro-ph2008★ 140 cited

Fermi LAT Observations of the Vela Pulsar

A. A. Abdo

The Vela pulsar is the brightest persistent source in the GeV sky and thus is the traditional first target for new gamma-ray observatories. We report here on initial Fermi Large Ar…

astro-ph2008★ 3 cited

Search for Redshifted 2.2 MeV Neutron Capture Line From A0535+262 in Outburst

Sirin Caliskan, Emrah Kalemci, Matthew G. Baring +2

The Be/X-ray binary system A0535+262 underwent a giant outburst in May-June 2005, followed by a dimmer outburst in August-September 2005. This increased intensity provided an oppor…

cond-mat.other2008★ 68 cited

Dynamical properties of dipolar Fermi gases

T Sogo, L He, T Miyakawa +3

We investigate dynamical properties of a one-component Fermi gas with dipole-dipole interaction between particles. Using a variational function based on the Thomas-Fermi density di…

cs.IT2008★ 5 cited

Bayesian Compressive Sensing via Belief Propagation

Dror Baron, Shriram Sarvotham, Richard G. Baraniuk

Compressive sensing (CS) is an emerging field based on the revelation that a small collection of linear projections of a sparse signal contains enough information for stable, sub-N…

hep-ex2008★ 1 cited

Beam Spin Asymmetries in DVCS with CLAS at 4 .8 GeV

G. Gavalian

We report measurements of the beam spin asymmetry in Deeply Virtual Compton Scattering (DVCS) at an electron beam energy of 4.8 GeV using the CLAS detector at the Thomas Jefferson…

cond-mat.mes-hall2008★ 46 cited

Resonant Coherent Phonon Spectroscopy of Single-Walled Carbon Nanotubes

G. D. Sanders, C. J. Stanton, J. -H. Kim +6

Using femtosecond pump-probe spectroscopy with pulse shaping techniques, one can generate and detect coherent phonons in chirality-specific semiconducting single-walled carbon nano…

astro-ph2008★ 10 cited

HX-POL - A Balloon-Borne Hard X-Ray Polarimeter

H. Krawczynski, A. Garson, Q. Li +10

We report on the design and estimated performance of a balloon-borne hard X-ray polarimeter called HX-POL. The experiment uses a combination of Si and Cadmium Zinc Telluride detect…

math.DS2008★ 5 cited

A large deviations bound for the Teichmuller flow

V. Araujo, A. Bufetov

Large deviation rates are obtained for suspension flows over symbolic dynamical systems with a countable alphabet. The method is that of the first author and follows that of L.-S.…

nucl-ex2008★ 52 cited

Observation of Two-source Interference in the Photoproduction Reaction

B. I. Abelev

In ultra-peripheral relativistic heavy-ion collisions, a photon from the electromagnetic field of one nucleus can fluctuate to a quark-antiquark pair and scatter from the other nuc…

cond-mat.str-el2008★ 51 cited

Metallic Ferromagnetism in the Kondo Lattice

Seiji J. Yamamoto, Qimiao Si

Metallic magnetism is both ancient and modern, occurring in such familiar settings as the lodestone in compass needles and the hard drive in computers. Surprisingly, a rigorous the…

cs.CV2008

A Matlab Implementation of a Flat Norm Motivated Polygonal Edge Matching Method using a Decomposition of Boundary into Four 1-Dimensional Currents

Simon P. Morgan, Wotao Yin, Kevin R. Vixie

We describe and provide code and examples for a polygonal edge matching method.

cs.IT2008★ 2 cited

Two Models for Noisy Feedback in MIMO Channels

Vaneet Aggarwal, Gajanana Krishna, Srikrishna Bhashyam +1

Two distinct models of feedback, suited for FDD (Frequency Division Duplex) and TDD (Frequency Division Duplex) systems respectively, have been widely studied in the literature. In…

cond-mat.mtrl-sci2008★ 33 cited

Etching-dependent reproducible memory switching in vertical SiO2 structures

J. Yao, L. Zhong, D. Natelson +1

Vertical structures of SiO sandwiched between a top tungsten electrode and conducting non-metal substrate were fabricated by dry and wet etching methods. Both structures exhi…

physics.data-an2008★ 2 cited

The Correlation Function of Multiple Dependent Poisson Processes Generated by the Alternating Renewal Process Method

Don H. Johnson

We derive conditions under which alternating renewal processes can be used to construct correlated Poisson processes. The pairwise correlation function is also derived, showing tha…

hep-ex2008★ 29 cited

First measurement of direct photoproduction on the proton

CLAS Collaboration, M. Battaglieri, R. De Vita +1

We report on the results of the first measurement of exclusive meson photoproduction on protons for GeV and GeV. Data were collected w…

cs.LO2008★ 138 cited

Multi-Objective Model Checking of Markov Decision Processes

Kousha Etessami, Marta Kwiatkowska, Moshe Y. Vardi +1

We study and provide efficient algorithms for multi-objective model checking problems for Markov Decision Processes (MDPs). Given an MDP, M, and given multiple linear-time (ω-regul…

cond-mat.mtrl-sci2008★ 25 cited

Localized heating in nanoscale Pt constrictions measured using blackbody radiation emission

Daniel R. Ward, Naomi J. Halas, Douglas Natelson

Using thermal emission microscopy, we investigate heating in Pt nanowires before and during electromigration. The wires are observed to reach temperatures in excess of 1000 K. This…

hep-ex2008★ 20 cited

New Measurement of Exclusive Decays of the chi_c0 and chi_c2 to Two-Meson Final States

CLEO Collaboration, D. M. Asner

Using a sample of 2.59 times 10^7 psi(2S) decays collected by the CLEO--c detector, we present results of a study of chi_{c0} and chi_{c2} decays into two-meson final states. We pr…

cond-mat.other2008★ 266 cited

Extreme tunability of interactions in a Li Bose-Einstein condensate

Scott E. Pollack, D. Dries, M. Junker +3

We use a Feshbach resonance to tune the scattering length a of a Bose-Einstein condensate of 7Li in the |F = 1, m_F = 1> state. Using the spatial extent of the trapped condensate w…

hep-ex2008★ 14 cited

Evidence for the decay B_s^0 --> D_s^(*)D_s^(*) and a measurement of Delta_Gamma_s^CP/Gamma_s

D0 Collaboration, V. M. Abazov

We search for the semi-inclusive process B_s^0 --> D_s^(*)D_s^(*) using 2.8 fb^-1 of ppbar collisions at s^(1/2) = 1.96 TeV recorded by the D0 detector operating at the Fermilab Te…

nucl-ex2008★ 103 cited

A Precise Measurement of the Neutron Magnetic Form Factor GMn in the Few-GeV2 Region

J. Lachniet, A. Afanasev, H. Arenhövel +5

The neutron elastic magnetic form factor GMn has been extracted from quasielastic electron scattering data on deuterium with the CEBAF Large Acceptance Spectrometer (CLAS) at Jeffe…