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270 papers · 1 filter

math.NT2012

Primitive prime factors in second order linear recurrence sequences

Andrew Granville

For a class of Lucas sequences , we show that if is a positive integer then has a primitive prime factor which divides to an odd power, except perhaps when $…

hep-ex2012★ 36 cited

Multi-channel search for squarks and gluinos in sqrt(s)=7 TeV pp collisions with the ATLAS detector

ATLAS Collaboration

A search for supersymmetric particles in final states with zero, one, and two leptons, with and without jets identified as originating from b-quarks, in 4.7 fb-1 of sqrt(s)=7 TeV p…

astro-ph.GA2012★ 83 cited

On the Origin of Mass Segregation in NGC 3603

Xiaoying Pang, Eva K. Grebel, Richard J. Allison +5

We present deep Hubble Space Telescope/Wide Field and Planetary Camera 2 photometry of the young HD 97950 star cluster in the giant H {\sc ii} region NGC 3603. The data were obtain…

cs.LG2012★ 10 cited

Advances in Optimizing Recurrent Networks

Yoshua Bengio, Nicolas Boulanger-Lewandowski, Razvan Pascanu

After a more than decade-long period of relatively little research activity in the area of recurrent neural networks, several new developments will be reviewed here that have allow…

cs.LG2012★ 1 cited

High-dimensional sequence transduction

Nicolas Boulanger-Lewandowski, Yoshua Bengio, Pascal Vincent

We investigate the problem of transforming an input sequence into a high-dimensional output sequence in order to transcribe polyphonic audio music into symbolic notation. We introd…

math.NT2012★ 8 cited

A Recursion Formula for Moments of Derivatives of Random Matrix Polynomials

S. Ali Altug, Sandro Bettin, Ian Petrow +2

We give asymptotic formulae for random matrix averages of derivatives of characteristic polynomials over the groups USp(2N), SO(2N) and O^-(2N). These averages are used to predict…

astro-ph.SR2012★ 406 cited

SDSS DR7 White Dwarf Catalog

S. J. Kleinman, S. O. Kepler, D. Koester +13

We present a new catalog of spectroscopically-confirmed white dwarf stars from the Sloan Digital Sky Survey Data Release 7 spectroscopic catalog. We find 20,407 white dwarf spectra…

astro-ph.SR2012★ 29 cited

Extension of the C star rotation curve of the Milky Way to 24 kpc

P. Battinelli, S. Demers, C. Rossi +1

Demers and Battinelli published, in 2007 the rotation curve of the Milky Way based on the radial velocity of carbon stars outside the Solar circle. Since then we have established a…

hep-ex2012★ 21 cited

A search for prompt lepton-jets in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector

ATLAS Collaboration

We present a search for a light (mass < 2 GeV) boson predicted by Hidden Valley supersymmetric models that decays into a final state consisting of collimated muons or electrons, de…

hep-ex2012★ 557 cited

Observation of Associated Near-side and Away-side Long-range Correlations in sqrt(s_NN)=5.02 TeV Proton-lead Collisions with the ATLAS Detector

ATLAS Collaboration

Two-particle correlations in relative azimuthal angle (Delta-phi) and pseudorapidity (Delta-eta) are measured in sqrt(s_NN) = 5.02 TeV p+Pb collisions using the ATLAS detector at t…

hep-ex2012★ 45 cited

Search for charged Higgs bosons through the violation of lepton universality in ttbar events using pp collision data at sqrt(s) = 7 TeV with the ATLAS experiment

ATLAS Collaboration

In several extensions of the Standard Model, the top quark can decay into a bottom quark and a light charged Higgs boson H+, t to bH+, in addition to the Standard Model decay t to…

hep-ex2012★ 17 cited

Search for direct CP-violation in singly-Cabibbo suppressed D+- --> K+ K- pi+- decays

BaBar Collaboration, J. P. Lees, V. Poireau +359

We report on a search for direct CP asymmetry in the singly Cabibbo-suppressed decay D+- --> K+ K- pi+- using a data sample of 476 fb-1 accumulated with the BaBar detector running…

hep-ph2012★ 28 cited

Rescattering Contributions to rare B-Meson Decays

Michael Gronau, David London, Jonathan L. Rosner

Several and decays have been observed which have been cited as evidence for exchange (), penguin annihilation () and annihilation () processes, such as $\bar b…

cs.LG2012★ 14 cited

Texture Modeling with Convolutional Spike-and-Slab RBMs and Deep Extensions

Heng Luo, Pierre Luc Carrier, Aaron Courville +1

We apply the spike-and-slab Restricted Boltzmann Machine (ssRBM) to texture modeling. The ssRBM with tiled-convolution weight sharing (TssRBM) achieves or surpasses the state-of-th…

cs.SC2012★ 1k cited

Theano: new features and speed improvements

Frédéric Bastien, Pascal Lamblin, Razvan Pascanu +6

Theano is a linear algebra compiler that optimizes a user's symbolically-specified mathematical computations to produce efficient low-level implementations. In this paper, we prese…

hep-ex2012★ 125 cited

ATLAS search for new phenomena in dijet mass and angular distributions using pp collisions at sqrt(s)=7 TeV

ATLAS Collaboration

Mass and angular distributions of dijets produced in LHC proton-proton collisions at a centre-of-mass energy sqrt(s)=7 TeV have been studied with the ATLAS detector using the full…

hep-ex2012★ 79 cited

Search for pair production of massive particles decaying into three quarks with the ATLAS detector in sqrt(s) = 7 TeV pp collisions at the LHC

ATLAS Collaboration

A search is conducted for hadronic three-body decays of a new massive coloured particle in sqrt(s) = 7 TeV pp collisions at the LHC using an integrated luminosity of 4.6/fb collect…

astro-ph.SR2012★ 310 cited

Seismic diagnostics for transport of angular momentum in stars 1. Rotational splittings from the PMS to the RGB

J. P. Marques, M. J. Goupil, Y. Lebreton +12

Rotational splittings are currently measured for several main sequence stars and a large number of red giants with the space mission Kepler. This will provide stringent constraints…

astro-ph.EP2012★ 33 cited

A search for transits of GJ 581\lowercase{e} and characterization of the host star variability using MOST space telescope photometry

Diana Dragomir, Jaymie M. Matthews, Rainer Kuschnig +7

The GJ 581 system has been amply studied since its discovery in 2005: the number of known planets in the system has increased and their orbital parameters are among the most precis…

hep-ex2012★ 103 cited

Measurement of Upsilon production in 7 TeV pp collisions at ATLAS

ATLAS Collaboration

Using 1.8 fb-1 of pp collisions at a center-of-mass energy of 7 TeV recorded by the ATLAS detector at the Large Hadron Collider, we present measurements of the production cross sec…

hep-ex2012★ 51 cited

Measurement of the ttbar production cross section in the tau+jets channel using the ATLAS detector

ATLAS Collaboration

A measurement of the top quark pair production cross section in the final state with a hadronically decaying tau lepton and jets is presented. The analysis is based on proton-proto…

hep-ex2012★ 125 cited

Search for the neutral Higgs bosons of the Minimal Supersymmetric Standard Model in pp collisions at sqrt(s)=7 TeV with the ATLAS detector

ATLAS Collaboration

A search for neutral Higgs bosons of the Minimal Supersymmetric Standard Model (MSSM) is reported. The analysis is based on a sample of proton-proton collisions at a centre-of-mass…

math.PR2012★ 49 cited

Cauchy-Laguerre two-matrix model and the Meijer-G random point field

M. Bertola, M. Gekhtman, J. Szmigielski

We apply the general theory of Cauchy biorthogonal polynomials developed previously by the authors, to the case associated with Laguerre measures. In particular, we obtain explicit…

cs.LG2012★ 3.8k cited

On the difficulty of training Recurrent Neural Networks

Razvan Pascanu, Tomas Mikolov, Yoshua Bengio

There are two widely known issues with properly training Recurrent Neural Networks, the vanishing and the exploding gradient problems detailed in Bengio et al. (1994). In this pape…