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393 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…

hep-ex2008★ 369 cited

Unexplained Excess of Electron-Like Events From a 1-GeV Neutrino Beam

MiniBooNE Collaboration

The MiniBooNE Collaboration observes unexplained electron-like events in the reconstructed neutrino energy range from 200 to 475 MeV. With protons on target,…

hep-ex2008★ 196 cited

Measurement of D+- and D0 production in deep inelastic scattering using a lifetime tag at HERA

ZEUS Collaboration, S. Chekanov

The production of D+- and D0 mesons has been measured with the ZEUS detector at HERA using an integrated luminosity of 133.6 pb-1. The measurements cover the kinematic range 5 < Q^…

cond-mat.str-el2008★ 8 cited

The metal insulator transition in cluster dynamical mean field theory: intersite correlation, cluster size, interaction strength, and the location of the transition line

Chungwei Lin, Andrew J. Millis

To gain insight into the physics of the metal insulator transition and the effectiveness of cluster dynamical mean field theory (DMFT) we have used one, two and four site dynamical…

hep-ph2008★ 20 cited

On dissociation of heavy mesons in a hot quark-gluon plasma

Fabio Dominguez, Bin Wu

We compare two mechanisms for the dissociation of heavy mesons in an infinite quark-gluon plasma: dynamic Debye screening and multiple scattering. Using the uncertainty principle i…

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…

hep-th2008★ 17 cited

Deep inelastic and dipole scattering on finite length hot SYM matter

A. H. Mueller, A. I. Shoshi, Bo-Wen Xiao

Deep inelastic scattering of -currents and the scattering of a small dipole on finite length hot SYM matter are discussed. In each case we find the sca…

hep-ex2008★ 9 cited

Subjet distributions in deep inelastic scattering at HERA

ZEUS Collaboration, S. Chekanov

Subjet distributions were measured in neutral current deep inelastic ep scattering with the ZEUS detector at HERA using an integrated luminosity of 81.7 pb-1. Jets were identified…

cond-mat.mtrl-sci2008★ 7 cited

Raman Spectroscopy of Graphene under Uniaxial Stress: Phonon Softening and Determination of the Crystallographic Orientation

Mingyuan Huang, Hugen Yan, Changyao Chen +3

We present a systematic study of the Raman spectra of optical phonons in graphene monolayers under tunable uniaxial tensile stress. Both the G and 2D bands exhibit significant red…

hep-ph2008

Jet Energy Loss and Mach Cones in pQCD vs. AdS/CFT

Barbara Betz, Jorge Noronha, Miklos Gyulassy +1

We compare away-side hadron correlations with respect to tagged heavy quark jets computed within a weakly coupled pQCD and a strongly coupled AdS/CFT model. While both models featu…

cond-mat.str-el2008★ 100 cited

Metal-Insulator phase diagram and orbital selectivity in 3-orbital models with rotationally invariant Hund coupling

Philipp Werner, Emanuel Gull, Andrew J. Millis

A three band model containing the essential physics of transition metal oxides with partially filled t_2g shells is solved in the single-site dynamical mean field approximation, us…

astro-ph2008★ 112 cited

The June 2008 flare of Markarian 421 from optical to TeV energies

The Agile Collaboration, Webt Collaboration, Magic Collaboration +2

We present optical, X-ray, high energy ( GeV) and very high energy ( GeV; VHE) observations of the high-frequency peaked blazar Mrk 421 taken betwee…

cond-mat.mes-hall2008★ 773 cited

Thermoelectric and Magnetothermoelectric Transport Measurements of Graphene

Yuri M. Zuev, Willy Chang, Philip Kim

The conductance and thermoelectric power (TEP) of graphene is simultaneously measured using microfabricated heater and thermometer electrodes. The sign of the TEP changes across th…

hep-ph2008★ 23 cited

Heavy-quark energy loss and thermalization in a strongly coupled SYM plasma

Guillaume Beuf, Cyrille Marquet, Bo-Wen Xiao

Using the AdS/CFT correspondence, we compute the radiative energy loss of a slowly decelerating heavy quark with mass M moving through a supersymmetric Yang Mills (SYM) plasma at t…

astro-ph2008★ 60 cited

Discovery of Very High-Energy Gamma-Ray Radiation from the BL Lac 1ES 0806+524

VERITAS Collaboration, V. Acciari, E. Aliu +90

The high-frequency-peaked BL-Lacertae object \objectname{1ES 0806+524}, at redshift z=0.138, was observed in the very-high-energy (VHE) gamma-ray regime by VERITAS between November…

math.DG2008

The Poisson equation on complete manifolds with positive spectrum and applications

Ovidiu Munteanu, Natasa Sesum

In this paper we investigate the existence of a solution to the Poisson equation on complete manifolds with positive spectrum and Ricci curvature bounded from below. We show that i…

astro-ph2008★ 297 cited

Untwisting magnetospheres of neutron stars

Andrei M. Beloborodov

Magnetospheres of neutron stars are anchored in the rigid crust and can be twisted by sudden crustal motions ("starquakes"). The twisted magnetosphere does not remain static and gr…

hep-ex2008★ 43 cited

Measurement of charged current deep inelastic scattering cross sections with a longitudinally polarised electron beam at HERA

ZEUS Collaboration

Measurements of the cross sections for charged current deep inelastic scattering in e-p collisions with longitudinally polarised electron beams are presented. The measurements are…

hep-th2008★ 53 cited

A Model Independent Ultraviolet Cutoff for Theories with Charged Massive Higher Spin Fields

Massimo Porrati, Rakibur Rahman

We argue that the theory of a massive higher spin field coupled to electromagnetism in flat space possesses an intrinsic, model independent, finite upper bound on its UV cutoff. By…

nucl-th2008★ 48 cited

On multiple scatterings of mesons in hot and cold QCD matter

Fabio Dominguez, Cyrille Marquet, Bin Wu

We study the propagation of a color singlet q\bar{q} pair undergoing multiple scatterings in hot and cold QCD matter. The interaction of the dipole with the nucleus or plasma is de…

astro-ph2008★ 130 cited

The Disruption and Fueling of M33

M. E. Putman, J. E. G. Peek, A. Muratov +7

The disruption of the M33 galaxy is evident from its extended gaseous structure. We present new data from the Galactic Arecibo L-Band Feed Array HI (GALFA-HI) Survey that show the…

nucl-ex2008★ 4 cited

Status and overview of development of the Silicon Pixel Detector for the PHENIX experiment at the BNL RHIC

Ryo Ichimiya, Nicole Apadula, Yasuyuki Akiba +19

We have developed a silicon pixel detector to enhance the physics capabilities of the PHENIX experiment. This detector, consisting of two layers of sensors, will be installed aroun…

astro-ph2008★ 22 cited

Radiative Feedback in Relic HII Regions at High-Redshift

Andrei Mesinger, Greg L. Bryan, Zoltan Haiman

UV radiation from early astrophysical sources could have a large impact on subsequent star formation in nearby protogalaxies. Here we study the radiative feedback from the first, s…

hep-ex2008★ 65 cited

Deep inelastic scattering with leading protons or large rapidity gaps at HERA

ZEUS Collaboration

The dissociation of virtual photons, , in events with a large rapidity gap between and the outgoing proton, as well as in events in which the leading proto…