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Showing 2009Show all

49 papers · 1 filter

astro-ph.CO2009★ 270 cited

A connection between star formation activity and cosmic rays in the starburst galaxy M 82

V. A. Acciari, E. Aliu, T. Arlen +89

Although Galactic cosmic rays (protons and nuclei) are widely believed to be dominantly accelerated by the winds and supernovae of massive stars, definitive evidence of this origin…

math-ph2009★ 28 cited

The local relaxation flow approach to universality of the local statistics for random matrices

Laszlo Erdos, Benjamin Schlein, Horng-Tzer Yau +1

We present a generalization of the method of the local relaxation flow to establish the universality of local spectral statistics of a broad class of large random matrices. We show…

cs.GT2009★ 29 cited

Sum of Us: Strategyproof Selection from the Selectors

Noga Alon, Felix Fischer, Ariel D. Procaccia +1

We consider directed graphs over a set of n agents, where an edge (i,j) is taken to mean that agent i supports or trusts agent j. Given such a graph and an integer k\leq n, we wish…

hep-th2009★ 10 cited

Decoupling Gravity in F-Theory

Clay Cordova

We study seven-brane SU(5) GUT models of string phenomenology which can be consistently analyzed in a purely local framework. The requirement that gravity can decouple constrains t…

stat.ME2009★ 30 cited

Rejoinder: Matched Pairs and the Future of Cluster-Randomized Experiments

Kosuke Imai, Gary King, Clayton Nall

Rejoinder to "The Essential Role of Pair Matching in Cluster-Randomized Experiments, with Application to the Mexican Universal Health Insurance Evaluation" [arXiv:0910.3752]

stat.ME2009★ 301 cited

The Essential Role of Pair Matching in Cluster-Randomized Experiments, with Application to the Mexican Universal Health Insurance Evaluation

Kosuke Imai, Gary King, Clayton Nall

A basic feature of many field experiments is that investigators are only able to randomize clusters of individuals--such as households, communities, firms, medical practices, schoo…

math.DG2009

On an extension of the H^{k} mean curvature flow

Yi Li

In this note we generalize an extension theorem in [5] and [9] of the mean curvature flow to the H^{k} mean curvature flow under some extra conditions. The main difficult problem i…

physics.ins-det2009

Development of FTK architecture: a fast hardware track trigger for the ATLAS detector

A. Annovi, M. Beretta, E. Bossini +30

The Fast Tracker (FTK) is a proposed upgrade to the ATLAS trigger system that will operate at full Level-1 output rates and provide high quality tracks reconstructed over the entir…

q-fin.GN2009★ 3.3k cited

The Building Blocks of Economic Complexity

Cesar A. Hidalgo, Ricardo Hausmann

For Adam Smith, wealth was related to the division of labor. As people and firms specialize in different activities, economic efficiency increases, suggesting that development is a…

quant-ph2009

Quantum interpolation of polynomials

Daniel M. Kane, Samuel A. Kutin

We consider quantum interpolation of polynomials. We imagine a quantum computer with black-box access to input/output pairs (x_i, f(x_i)), where f is a degree-d polynomial, and we…

hep-ex2009★ 9 cited

Searching the Inclusive Lepton + Photon + Missing ET + b-quark Signature for Radiative Top Quark Decay and Non-Standard-Model Processes

CDF Collaboration, T. Aaltonen

In a search for new phenomena in a signature suppressed in the standard model of elementary particles (SM), we compare the inclusive production of events containing a lepton, a pho…

math.DS2009

Generating Product Systems

Nir Avni, Benjamin Weiss

Generalizing Krieger's finite generation theorem, we give conditions for an ergodic system to be generated by a pair of partitions, each required to be measurable with respect to a…

astro-ph.CO2009★ 90 cited

The Star Formation History and Extended Structure of the Hercules Milky Way Satellite

D. J. Sand, E. W. Olszewski, B. Willman +5

We present imaging of the recently discovered Hercules Milky Way satellite and its surrounding regions to study its structure, star formation history and to thoroughly search for s…

stat.AP2009★ 108 cited

Practical large-scale spatio-temporal modeling of particulate matter concentrations

Christopher J. Paciorek, Jeff D. Yanosky, Robin C. Puett +2

The last two decades have seen intense scientific and regulatory interest in the health effects of particulate matter (PM). Influential epidemiological studies that characterize ch…

hep-ex2009★ 31 cited

First Observation of Vector Boson Pairs in a Hadronic Final State at the Tevatron Collider

CDF Collaboration, T. Aaltonen

We present the first observation in hadronic collisions of the electroweak production of vector boson pairs (VV, V=W,Z) where one boson decays to a dijet final state . The data cor…

astro-ph.HE2009★ 114 cited

Spectrum Synthesis Modeling of the X-ray Spectrum of GRO J1655-40 Taken During the 2005 Outburst

T. R. Kallman, M. A. Bautista, Stephane Goriely +5

The spectrum from the black hole X-ray transient GRO J1655-40. obtained using the High Energy Transmission Grating (HETG) in 2005 is notable as a laboratory for the study…

astro-ph.GA2009★ 564 cited

The ACS Nearby Galaxy Survey Treasury

Julianne J. Dalcanton, Benjamin F. Williams, Anil C. Seth +24

The ACS Nearby Galaxy Survey Treasury (ANGST) is a systematic survey to establish a legacy of uniform multi-color photometry of resolved stars for a volume-limited sample of nearby…

q-bio.PE2009★ 1 cited

Epidemics with general generation interval distributions

Joel Miller, Bahman Davoudi, Rafael Meza +2

We study the spread of susceptible-infected-recovered (SIR) infectious diseases where an individual's infectiousness and probability of recovery depend on his/her "age" of infectio…

hep-ex2009★ 57 cited

Production of psi(2S) Mesons in ppbar Collisions at 1.96 TeV

CDF Collaboration, T. Aaltonen

We have measured the differential cross section for the inclusive production of psi(2S) mesons decaying to mu^{+} mu^{-1} that were produced in prompt or B-decay processes from ppb…

hep-ex2009★ 10 cited

Search for Standard Model Higgs Boson Production in Association with a W Boson using a Neural Network

CDF Collaboration, T. Aaltonen

We present a search for standard model Higgs boson production in association with a W boson in proton-antiproton collisions at a center of mass energy of 1.96 TeV. The search emplo…

math-ph2009★ 7 cited

Universality of sine-kernel for Wigner matrices with a small Gaussian perturbation

Laszlo Erdos, Jose A. Ramirez, Benjamin Schlein +1

We consider Hermitian random matrices with independent identically distributed entries (Wigner matrices). We assume that the distribution of the entries have a Gaussian…

hep-ex2009★ 31 cited

Search for a Fermiophobic Higgs Boson Decaying into Diphotons in p p-bar Collisions at sqrt{s} = 1.96 TeV

CDF Collaboration, T. Aaltonen

A search for a narrow diphoton mass resonance is presented based on data from 3.0 fb^{-1} of integrated luminosity from p-bar p collisions at sqrt{s} = 1.96 TeV collected by the CD…

physics.optics2009

Coupled photonic crystal nanobeam cavities

Parag B. Deotare, Murray W. McCutcheon, Ian W. Frank +2

We describe the design, fabrication, and spectroscopy of coupled, high Quality (Q) factor silicon nanobeam photonic crystal cavities. We show that the single nanobeam cavity modes…

hep-ph2009★ 26 cited

Quark and Lepton Flavor Physics from F-Theory

Lisa Randall, David Simmons-Duffin

Recent work on local F-theory models shows the potential for new categories of flavor models. In this paper we investigate the perturbative effective theory interpretation of this…