Showing 2007Show all

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astro-ph2007★ 90 cited

Globular clusters in the outer halo of M31: the survey

A. P. Huxor, N. R. Tanvir, A. M. N. Ferguson +4

We report the discovery of 40 new globular clusters (GCs) that have been found in surveys of the halo of M31 based on INT/WFC and CHFT/Megacam imagery. A subset of these these new…

astro-ph2007★ 381 cited

A Search for Extended Ultraviolet Disk (XUV-disk) Galaxies in the Local Universe

David A. Thilker, Luciana Bianchi, Gerhardt Meurer +26

We have initiated a search for extended ultraviolet disk (XUV-disk) galaxies in the local universe. Herein, we compare GALEX UV and visible--NIR images of 189 nearby (D40 Mpc) S…

hep-ex2007★ 29 cited

A Measurement of the Branching Fractions of exclusive Bbar -> D(*)(pi)l-nubar Decays in Events with a Fully Reconstructed B Meson

The BABAR Collaboration, B. Aubert

We report a measurement of the branching fractions for Bbar -> D(*)(pi)l-nubar decays based on 341.1 fb-1 of data collected at the Upsilon(4S) resonance with the babar detector at…

math.CA2007★ 4 cited

A note on restricted X-ray transforms

Norberto Laghi

We show how the techniques introduces by Christ can be employed to derive endpoint bounds for the X-ray transform associated to the line complex generated by the curve $t…

hep-ex2007★ 10 cited

Time-dependent Dalitz plot analysis of B0 -> D-(+) K0 Pi+(-) decays

The BABAR Collaboration, B. Aubert

We present for the first time a measurement of the weak phase 2b+g obtained from a time-dependent Dalitz plot analysis of B^0 -> D-(+) K0 Pi+(-) decays. Using a sample of approxima…

astro-ph2007★ 120 cited

High-resolution radio observations of submillimetre galaxies

A. D. Biggs, R. J. Ivison

We have produced sensitive, high-resolution radio maps of 12 SMGs in the Lockman Hole using combined MERLIN and VLA data at a frequency of 1.4 GHz. Integrating for 350hr yielded an…

astro-ph2007★ 47 cited

The Optical-Radio Mapping: the kinetic efficiency of Radio-Loud AGNs

Francesco Shankar, Alfonso Cavaliere, Michele Cirasuolo +1

We constrain the mean kinetic efficiency of radio-loud active galactic nuclei by using an optically selected sample for which both the optical and the radio luminosity functions (L…

hep-th2007★ 18 cited

Typicality, Black Hole Microstates and Superconformal Field Theories

Vijay Balasubramanian, Bartlomiej Czech, Yang-Hui He +2

We analyze the structure of heavy multitrace BPS operators in N = 1 superconformal quiver gauge theories that arise on the worldvolume of D3-branes on an affine toric cone. We exhi…

hep-ex2007★ 49 cited

Measurement of D0-anti-D0 Mixing using the Ratio of Lifetimes for the Decays D0 --> K-pi+, K-K+, and pi-pi+

The BABAR Collaboration, B. Aubert

We present a measurement of - mixing parameters using the ratios of lifetimes extracted from a sample of mesons produced through the process $D^{*+}\to\D^0π^+…

cond-mat.soft2007★ 467 cited

Bicontinuous emulsions stabilized solely by colloidal particles

E. M. Herzig, K. A. White, A. B. Schofield +2

Recent large-scale computer simulations suggest that it may be possible to create a new class of soft solids, called `bijels', by stabilizing and arresting the bicontinuous interfa…

astro-ph2007★ 27 cited

A sample of mJy radio sources at 1.4 GHz in the Lynx and Hercules fields - II. Cosmic evolution of the space density of FRI radio sources

E. E. Rigby, P. N. Best, I. A. G. Snellen

In this paper the cosmic evolution of the space density of Fanaroff & Riley Class I (FRI) radio sources is investigated out to z ~ 1, in order to understand the origin of the diffe…

hep-ex2007★ 17 cited

Study of B0 --> l+l'- decays (l,l' = e,mu)

The BaBar Collaboration, B. Aubert

We present a search for the decays B0 --> e+e-, B0 --> mu+ mu- and B0 --> e mu using data collected with the BABAR detector at the PEP-II e+e-collider at SLAC. Using a dataset corr…

hep-lat2007★ 100 cited

Non-perturbative renormalization of quark bilinear operators and B_K using domain wall fermions

Y. Aoki, P. A. Boyle, N. H. Christ +11

We present a calculation of the renormalization coefficients of the quark bilinear operators and the K-Kbar mixing parameter B_K. The coefficients relating the bare lattice operato…

hep-ph2007★ 1 cited

Automating Renormalization of Quantum Field Theories

A. D. Kennedy, T. Binoth, T. Rippon

We give an overview of state-of-the-art multi-loop Feynman diagram computations, and explain how we use symbolic manipulation to generate renormalized integrals that are then evalu…

astro-ph2007★ 39 cited

Why are there so few hot Jupiters?

W. K. M. Rice, P. J. Armitage, D. F. Hogg

We use numerical simulations to model the migration of massive planets at small radii and compare the results with the known properties of 'hot Jupiters' (extrasolar planets with s…

astro-ph2007★ 127 cited

The SCUBA HAlf Degree Extragalactic Survey (SHADES) -- VI. 350 micron mapping of submillimetre galaxies

Kristen Coppin, Mark Halpern, Douglas Scott +24

A follow-up survey using the Submillimetre High-Angular Resolution Camera (SHARC-II) at 350 microns has been carried out to map the regions around several 850 micron-selected sourc…

hep-ex2007★ 29 cited

Beam spin asymmetry in deep and exclusive pi0 electroproduction

CLAS Collaboration, R. De Masi

The beam spin asymmetry (BSA) in the exclusive reaction ep->ep pi0 was measured with the CEBAF 5.77 GeV polarized electron beam and Large Acceptance Spectrometer(CLAS). The xB, Q2,…

cs.CC2007★ 28 cited

A Spectral Approach to Analyzing Belief Propagation for 3-Coloring

Amin Coja-Oghlan, Elchanan Mossel, Dan Vilenchik

Contributing to the rigorous understanding of BP, in this paper we relate the convergence of BP to spectral properties of the graph. This encompasses a result for random graphs wit…

astro-ph2007★ 50 cited

The SCUBA Half Degree Extragalactic Survey (SHADES) - IX: the environment, mass and redshift dependence of star formation

S. Serjeant, S. Dye, A. Mortier +17

We present a comparison between the SCUBA Half Degree Extragalactic Survey (SHADES) at 450 and 850 microns in the Lockman Hole East with a deep Spitzer Space Telescope survey at 3.…

hep-ex2007★ 26 cited

Measurement of the Decay B- --> D*0 e- nubar

The BABAR Collaboration, B. Aubert

Using 226 million BBbar events recorded on the Upsilon(4S) resonance with the BABAR detector at the SLAC e+e- PEPII storage rings, we reconstruct B- -> D*0 e- nubar decays using th…

hep-ex2007★ 12 cited

First Measurement of the Fraction of Top Quark Pair Production Through Gluon-Gluon Fusion

CDF Collaboration, T. Aaltonen

We present the first measurement of the fraction of top quark pair production through gluon-gluon fusion. We use 0.96/fb of s**(1/2)=1.96 TeV p-pbar collision data recorded with th…

hep-th2007★ 43 cited

Quenched mesonic spectrum at large N

Luigi Del Debbio, Biagio Lucini, Agostino Patella +1

We compute the masses of the and of the mesons in the quenched approximation on a lattice with fixed lattice spacing for SU() gauge theory…

nucl-ex2007★ 7 cited

Ratios of 15N/12C and 4He/12C inclusive electroproduction cross sections in the nucleon resonance region

CLAS Collaboration, P. E. Bosted, R. Fersch

The (W,Q2)-dependence of the ratio of inclusive electron scattering cross sections for 15N/12C was determined in the kinematic range 0.8<W<2 GeV and 0.2<Q2<1 GeV2 using 2.285 GeV e…

hep-ph2007★ 111 cited

First determination of the strong coupling constant using NNLO predictions for hadronic event shapes in e^+e^- annihilations

G. Dissertori, A. Gehrmann-De Ridder, T. Gehrmann +3

We present the first determination of the strong coupling constant from a fit of next-to-next-to-leading order QCD predictions to event-shape variables, measured in annihi…