Results for "Jaclyn Champagne"

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On the image of the Galois representation associated to a non-CM Hida familySep 30 2014Fix a prime $p > 2$. Let $\rho : \text{Gal}(\overline{\mathbb{Q}}/\mathbb{Q}) \to \text{GL}_2(\mathbb{I})$ be the Galois representation coming from a non-CM irreducible component $\mathbb{I}$ of Hida's $p$-ordinary Hecke algebra. Assume the residual representation ... More
Chow motives associated to certain algebraic Hecke charactersAug 10 2017May 17 2018Shimura and Taniyama proved that if $A$ is a potentially CM abelian variety over a number field $F$ with CM by a field $K$ linearly disjoint from F, then there is an algebraic Hecke character $\lambda_A$ of $K$ such that $L(A/F,s)=L(\lambda_A,s)$. We ... More
Taking Census of Massive, Star-Forming Galaxies formed <1 Gyr After the Big BangMar 13 2019Two decades of effort have been poured into both single-dish and interferometric millimeter-wave surveys of the sky to infer the volume density of dusty star-forming galaxies (DSFGs, with SFR>100M$_\odot$ yr$^{-1}$) over cosmic time. Though obscured galaxies ... More
Centralized Adaptation for Parameter Estimation over Wireless Sensor NetworksJul 18 2015We study the performance of centralized least mean-squares (CLMS) algorithms in wireless sensor networks where nodes transmit their data over fading channels to a central processing unit (e.g., fusion center or cluster head), for parameter estimation. ... More
Towards Bottom-Up Analysis of Social FoodMar 14 2016Social media provide a wealth of information for research into public health by providing a rich mix of personal data, location, hashtags, and social network information. Among these, Instagram has been recently the subject of many computational social ... More
Big images of two-dimensional pseudorepresentationsApr 23 2019For an odd prime $p$, we study the image of a continuous 2-dimensional (pseudo)representation $\rho$ of a profinite group with coefficients in a local pro-$p$ domain $A$. Under mild conditions, Bella\"iche has proved that the image of $\rho$ contains ... More
Science with an ngVLA: Imaging Cold Gas to 1 kpc Scales in High-Redshift Galaxies with the ngVLAOct 18 2018The next generation Very Large Array (ngVLA) will revolutionize our understanding of the distant Universe via the detection of cold molecular gas in the first galaxies. Its impact on studies of galaxy characterization via detailed gas dynamics will provide ... More
Wiedemann-Franz Relation and Thermal-transistor Effect in Suspended GrapheneJan 13 2014We extract experimentally the electronic thermal conductivity, $K_{e}$, in suspended graphene which we dope using a back-gate electrode. We make use of two-point dc electron transport at low bias voltages and intermediate temperatures (50 - 160 K), where ... More
Estimation of Space-Time Varying Parameters Using a Diffusion LMS AlgorithmJul 18 2015We study the problem of distributed adaptive estimation over networks where nodes cooperate to estimate physical parameters that can vary over both space and time domains. We use a set of basis functions to characterize the space-varying nature of the ... More
Diffusion Adaptation over Multi-Agent Networks with Wireless Link ImpairmentsJul 18 2015We study the performance of diffusion least-mean-square algorithms for distributed parameter estimation in multi-agent networks when nodes exchange information over wireless communication links. Wireless channel impairments, such as fading and path-loss, ... More
On the Security Analysis of a Cooperative Incremental Relaying Protocol in the Presence of an Active EavesdropperJul 31 2018Physical layer security offers an efficient means to decrease the risk of confidential information leakage through wiretap links. In this paper, we address the physical-layer security in a cooperative wireless subnetwork that includes a source-destination ... More
Mobile Localization in Non-Line-of-Sight Using Constrained Square-Root Unscented Kalman FilterMay 01 2014Localization and tracking of a mobile node (MN) in non-line-of-sight (NLOS) scenarios, based on time of arrival (TOA) measurements, is considered in this work. To this end, we develop a constrained form of square root unscented Kalman filter (SRUKF), ... More
Theoretical Evaluation of the Reaction Rates for 26Al(n,p)26Mg and 26Al(n,a)23NaJan 12 2011The reactions that destroy 26Al in massive stars have significance in a number of astrophysical contexts. We evaluate the reaction rates of 26Al(n,p)26Mg and 26Al(n,a)23Na using cross sections obtained from the codes EMPIRE and TALYS. These have been ... More
Non-Explosive Hydrogen Burning: Where Do We Stand?Dec 06 1995The impact of nuclear physics uncertaintites on the abundances predicted to emerge from the cold CNO, NeNa and MgAl modes of hydrostatic hydrogen burning is discussed in the framework of a simple parametric model. In addition of being able to mimic qualitatively ... More
No Evidence for Millimeter Continuum Source Overdensities in the Environments of $z\gtrsim6$ QuasarsSep 26 2018Bright high-redshift quasars ($z>6$), hosting supermassive black holes ($\rm M_{BH} > 10^8 M_{\odot}$), are expected to reside in massive host galaxies embedded within some of the earliest and most massive galaxy overdensities. We analyze 1.2\,mm ALMA ... More
Distributed Cooperative Localization in Wireless Sensor Networks without NLOS IdentificationMar 03 2014In this paper, a 2-stage robust distributed algorithm is proposed for cooperative sensor network localization using time of arrival (TOA) data without identification of non-line of sight (NLOS) links. In the first stage, to overcome the effect of outliers, ... More
Charged-Particle Thermonuclear Reaction Rates: III. Nuclear Physics InputApr 23 2010The nuclear physics input used to compute the Monte Carlo reaction rates and probability density functions that are tabulated in the second paper of this series (Paper II) is presented. Specifically, we publish the input files to the Monte Carlo reaction ... More
Graphene Quantum Strain TransistorsSep 25 2018There is a wide range of science and applications accessible via the strain engineering of quantum transport in 2D materials. We propose a realistic experimental platform for uniaxial strain engineering of ballistic charge transport in graphene. We then ... More
The Effects of Thermonuclear Reaction-Rate Variations on 26Al Production in Massive Stars: a Sensitivity StudyJan 28 2011We investigate the effects of thermonuclear reaction rate variations on 26Al production in massive stars. The dominant production sites in such events were recently investigated by using stellar model calculations: explosive neon-carbon burning, convective ... More
Asymmetric multi-segmented conjugated polymer-metal nanowires for engineering of non-linear electrical behaviorApr 28 2013Jun 28 2013In this paper, we report on the impact of metal/polymer interfaces on the rectifying behavior of novel multi-segmented hybrid nanowires (HNWs) made of metallic and conjugated polymer (CP) segments. Using HNWs integrated in micromachined devices, the relationship ... More
Traffic jams and intermittent flows in microfluidic networksMay 27 2010We investigate both experimentally and theoretically the traffic of particles flowing in microfluidic obstacle networks. We show that the traffic dynamics is a non-linear process: the particle current does not scale with the particle density even in the ... More
Integrated machine learning pipeline for aberrant biomarker enrichment (i-mAB): characterizing clusters of differentiation within a compendium of systemic lupus erythematosus patientsMar 08 2018Clusters of differentiation (CD) are cell surface biomarkers that denote key biological differences between cell types and disease state. CD-targeting therapeutic monoclonal antibodies (mAB) afford rich trans-disease repositioning opportunities. Within ... More
Shadow lines in the arithmetic of elliptic curvesOct 27 2016Let E/Q be an elliptic curve and p a rational prime of good ordinary reduction. For every imaginary quadratic field K/Q satisfying the Heegner hypothesis for E we have a corresponding line in E(K)\otimes Q_p, known as a shadow line. When E/Q has analytic ... More
Charged-Particle Thermonuclear Reaction Rates: II. Tables and Graphs of Reaction Rates and Probability Density FunctionsApr 23 2010Numerical values of charged-particle thermonuclear reaction rates for nuclei in the A=14 to 40 region are tabulated. The results are obtained using a method, based on Monte Carlo techniques, that has been described in the preceding paper of this series ... More
Mechanically-adjustable and electrically-gated single-molecule transistorsSep 06 2004We demonstrate a device geometry for single-molecule electronics experiments that combines both the ability to adjust the spacing between the electrodes mechanically and the ability to shift the energy levels in the molecule using a gate electrode. With ... More
Secure MIMO Relaying Network: An Artificial Noise Aided Robust Design ApproachJun 23 2016Owing to the vulnerability of relay-assisted and device-to-device (D2D) communications, improving wireless security from a physical layer signal processing perspective is attracting increasing interest. Hence we address the problem of secure transmission ... More
Performance Analysis of User-centric Virtual Cell Dense Networks over mmWave ChannelsJul 26 2018This paper analyzes the ergodic capacity of a user-centric virtual cell (VC) dense network, where multiple access points (APs) form a VC for each user equipment (UE) and transmit data cooperatively over millimeter wave (mmWave) channels. Different from ... More
Pythagoras at the BatMay 29 2014The Pythagorean formula is one of the most popular ways to measure the true ability of a team. It is very easy to use, estimating a team's winning percentage from the runs they score and allow. This data is readily available on standings pages; no computationally ... More
Possible Evolution of Supermassive Black Holes from FRI quasarsMay 13 2016May 16 2016We explore the question of the rapid buildup of black hole mass in the early universe employing a growing black hole mass-based determination of both jet and disk powers predicted in recent theoretical work on black hole accretion and jet formation. Despite ... More
Charged-Particle Thermonuclear Reaction Rates: IV. Comparison to Previous WorkApr 23 2010We compare our Monte Carlo reaction rates (see Paper II of this series) to previous results that were obtained by using the classical method of computing thermonuclear reaction rates. For each reaction, the comparison is presented using two types of graphs: ... More
Thermal Equilibration of 176-Lu via K-MixingApr 01 2008In astrophysical environments, the long-lived (\T_1/2 = 37.6 Gy) ground state of 176-Lu can communicate with a short-lived (T_1/2 = 3.664 h) isomeric level through thermal excitations. Thus, the lifetime of 176-Lu in an astrophysical environment can be ... More
Relay-Selection Improves the Security-Reliability Trade-off in Cognitive Radio SystemsNov 02 2014Nov 29 2014We consider a cognitive radio (CR) network consisting of a secondary transmitter (ST), a secondary destination (SD) and multiple secondary relays (SRs) in the presence of an eavesdropper. We rely on careful relay selection for protecting the ST-SD transmission ... More
The Effects of Thermonuclear Reaction Rate Variations on Nova Nucleosynthesis: A Sensitivity StudyJun 03 2002We investigate the effects of thermonuclear reaction rate uncertainties on nova nucleosynthesis. One-zone nucleosynthesis calculations have been performed by adopting temperature-density-time profiles of the hottest hydrogen-burning zone (i.e., the region ... More
Area dependence of interlayer tunneling in strongly correlated bilayer 2D electron systems at $ν_T=1$May 15 2008The area and perimeter dependence of the Josephson-like interlayer tunneling signature of the coherent $\nu_T=1$ quantum Hall phase in bilayer two-dimensional electron systems is examined. Electrostatic top gates of various sizes and shapes are used to ... More
Tailoring 10 nm Scale Suspended Graphene Junctions and Quantum DotsFeb 05 2015The possibility to make 10 nm scale, and low-disorder, suspended graphene devices would open up many possibilities to study and make use of strongly coupled quantum electronics, quantum mechanics, and optics. We present a versatile method, based on the ... More
Direct measurement of the 14N(p,g)15O S-factorAug 17 2004We have measured the 14N(p,g)15O excitation function for energies in the range E_p = 155--524 keV. Fits of these data using R-matrix theory yield a value for the S-factor at zero energy of 1.64(17) keV b, which is significantly smaller than the result ... More
STARLIB: A Next-Generation Reaction-Rate Library for Nuclear AstrophysicsApr 29 2013STARLIB is a next-generation, all-purpose nuclear reaction-rate library. For the first time, this library provides the rate probability density at all temperature grid points for convenient implementation in models of stellar phenomena. The recommended ... More
Charged-Particle Thermonuclear Reaction Rates: I. Monte Carlo Method and Statistical DistributionsApr 23 2010A method based on Monte Carlo techniques is presented for evaluating thermonuclear reaction rates. We begin by reviewing commonly applied procedures and point out that reaction rates that have been reported up to now in the literature have no rigorous ... More
Giant Electron-hole Charging Energy Asymmetry in Ultra-short Carbon NanotubesAug 09 2016Making full usage of bipolar transport in single-wall carbon nanotube (SWCNT) transistors could permit the development of two-in-one quantum devices with ultra-short channels. We report on clean $\sim$10 to 100 nm long suspended SWCNT transistors which ... More
Few-hundred GHz Carbon Nanotube NEMSAug 13 2012We study 23 to 30 nm long suspended single-wall carbon nanotube quantum dots and observe both their stretching and bending vibrational modes. We use low-temperature DC electron transport to excite and measure the tubes' bending mode by making use of a ... More
Electronic and vibrational properties of V$_2$C-based MXenes: from experiments to first-principles modelingOct 19 2017Mar 28 2018In the present work, the electronic and vibrational properties of both pristine V$_2$C and fully-terminated V$_2$CT$_2$ (where T = F, O, OH) 2D monolayers are investigated using density functional theory. Firstly, the atomic structures of V$_2$C-based ... More
A Novel Approach for Ellipsoidal Outer-Approximation of the Intersection Region of Ellipses in the PlaneSep 18 2017In this paper, a novel technique for tight outer-approximation of the intersection region of a finite number of ellipses in 2-dimensional (2D) space is proposed. First, the vertices of a tight polygon that contains the convex intersection of the ellipses ... More
Joint Transceiver Design Algorithms for Multiuser MISO Relay Systems with Energy HarvestingAug 26 2015In this paper, we investigate a multiuser relay system with simultaneous wireless information and power transfer. Assuming that both base station (BS) and relay station (RS) are equipped with multiple antennas, this work studies the joint transceiver ... More
Mechanical properties of nanotubes of polyelectrolyte multilayersMar 30 2009The elastic properties of nanotubes fabricated by layer-by-layer (LbL) assembly of polyelectrolytes in the nanopores of polycarbonate track-etched membranes have been investigated by resonant contact Atomic Force Microscopy (AFM), for nanotube diameters ... More
Charge Imbalance and Bilayer 2D Electron Systems at $ν_T = 1$Aug 08 2008Nov 19 2008We use interlayer tunneling to study bilayer 2D electron systems at $\nu_T = 1$ over a wide range of charge density imbalance, $\Delta \nu =\nu_1-\nu_2$, between the two layers. We find that the strongly enhanced tunneling associated with the coherent ... More
Electronic Thermal Conductivity Measurements in Intrinsic GrapheneMar 10 2013Jun 27 2013The electronic thermal conductivity of graphene and 2D Dirac materials is of fundamental interest and can play an important role in the performance of nano-scale devices. We report the electronic thermal conductivity, $K_{e}$, in suspended graphene in ... More
Adaptive Reduced-Rank Minimum Symbol-Error-Rate Receive Processing for Large-Scale Multiple-Antenna SystemsOct 27 2015In this work, we propose a novel adaptive reduced-rank receive processing strategy based on joint preprocessing, decimation and filtering (JPDF) for large-scale multiple-antenna systems. In this scheme, a reduced-rank framework is employed for linear ... More
Diffusion LMS Strategies in Sensor Networks with Noisy Input DataJul 18 2015We investigate the performance of distributed least-mean square (LMS) algorithms for parameter estimation over sensor networks where the regression data of each node are corrupted by white measurement noise. Under this condition, we show that the estimates ... More
Tuning the Kondo effect with a mechanically controllable break junctionOct 19 2006May 19 2007We study electron transport through C60 molecules in the Kondo regime using a mechanically controllable break junction. By varying the electrode spacing, we are able to change both the width and height of the Kondo resonance, indicating modification of ... More
Thermonuclear reaction rate of 18O(p,gamma)19FDec 05 2012For stars between 0.8-8.0 solar masses, nucleosynthesis enters its final phase during the asymptotic giant branch (AGB) stage. During this evolutionary period, grain condensation occurs in the stellar atmosphere, and the star experiences significant mass ... More
Evidence for a finite temperature phase transition in a bilayer quantum Hall systemSep 05 2007Jan 25 2008We study the Josephson-like interlayer tunneling signature of the strongly correlated $\nu_T = 1$ quantum Hall phase in bilayer two-dimensional electron systems as a function of the layer separation, temperature and interlayer charge imbalance. Our results ... More
Ultra-short suspended single-wall carbon nanotube transistorsDec 15 2011We describe a method to fabricate clean suspended single-wall carbon nanotube (SWCNT) transistors hosting a single quantum dot ranging in length from a few 10s of nm down to $\approx$ 3 nm. We first align narrow gold bow-tie junctions on top of individual ... More
Statistical Methods for Thermonuclear Reaction Rates and Nucleosynthesis SimulationsSep 19 2014Rigorous statistical methods for estimating thermonuclear reaction rates and nucleosynthesis are becoming increasingly established in nuclear astrophysics. The main challenge being faced is that experimental reaction rates are highly complex quantities ... More
Low-Complexity Variable Forgetting Factor Constrained Constant Modulus RLS Algorithm for Adaptive BeamformingJun 22 2014In this paper, a recursive least squares (RLS) based blind adaptive beamforming algorithm that features a new variable forgetting factor (VFF) mechanism is presented. The beamformer is designed according to the constrained constant modulus (CCM) criterion, ... More
Nuclear Mixing Meters for Classical NovaeNov 12 2013Classical novae are caused by mass transfer episodes from a main sequence star onto a white dwarf via Roche lobe overflow. This material forms an accretion disk around the white dwarf. Ultimately, a fraction of this material spirals in and piles up on ... More
Security-Reliability Trade-off Analysis of Multi-Relay Aided Decode-and-Forward Cooperation SystemsMay 29 2015Jul 05 2015We consider a cooperative wireless network comprised of a source, a destination and multiple relays operating in the presence of an eavesdropper, which attempts to tap the source-destination transmission. We propose multi-relay selection scheme for protecting ... More
Robust Transceiver Design for MISO Interference Channel with Energy HarvestingJan 30 2015May 18 2015In this paper, we consider multiuser multiple-input single-output (MISO) interference channel where the received signal is divided into two parts for information decoding and energy harvesting (EH), respectively. The transmit beamforming vectors and receive ... More
Structural and electrical characterization of hybrid metal-polypyrrole nanowiresDec 20 2011We present here the synthesis and structural characterization of hybrid Au-polypyrrole-Au and Pt- polypyrrole-Au nanowires together with a study of their electrical properties from room-temperature down to very low temperature. A careful characterization ... More
The Focal plane Detector Package on the TUNL Split-pole SpectrographJun 06 2018A focal plane detector for the Enge Split-pole Spectrograph at Triangle Universities Nuclear Laboratory has been designed. The detector package consists of two position sensitive gas avalanche counters, a gas proportionality energy loss section, and a ... More
Benford's Law and Continuous Dependent Random VariablesSep 22 2013Mar 09 2018Many mathematical, man-made and natural systems exhibit a leading-digit bias, where a first digit (base 10) of 1 occurs not 11\% of the time, as one would expect if all digits were equally likely, but rather 30\%. This phenomenon is known as Benford's ... More
A Joint Localization and Clock Bias Estimation Technique Using Time-of-Arrival at Multiple Antenna ReceiversMar 03 2013May 12 2014In this work, a system scheme is proposed for tracking a radio emitting target moving in two-dimensional space. The localization is based on the use of biased time-of-arrival (TOA) measurements obtained at two asynchronous receivers, each equipped with ... More
Parity Violation in Photonuclear Reactions at HIGS -- Submission to Snowmass 2013: Intensity FrontierJul 31 2013We discuss the scientific motivation, possible experiments, and beam requirements for measurements of parity violation in photonuclear reactions at an intensity upgraded HIGS facility, HIGS2.
Experimental evidence of a natural parity state in $^{26}$Mg and its impact to the production of neutrons for the s processSep 12 2007We have studied natural parity states in $^{26}$Mg via the $^{22}$Ne($^{6}$Li,d)$^{26}$Mg reaction. Our method significantly improves the energy resolution of previous experiments and, as a result, we report the observation of a natural parity state in ... More
Mechanical Control of Spin States in Spin-1 Molecules and the Underscreened Kondo EffectMay 04 2010The ability to make electrical contact to single molecules creates opportunities to examine fundamental processes governing electron flow on the smallest possible length scales. We report experiments in which we controllably stretch individual cobalt ... More
Reporting, Reviewing, and Responding to Harassment on TwitterMay 13 2015When people experience harassment online, from individual threats or invective to coordinated campaigns of harassment, they have the option to report the harassers and content to the platform where the harassment has occurred. Platforms then evaluate ... More
First direct mass-measurement of the two-neutron halo nucleus 6He and improved mass for the four-neutron halo 8HeJul 08 2011Dec 24 2011The first direct mass-measurement of $^{6}$He has been performed with the TITAN Penning trap mass spectrometer at the ISAC facility. In addition, the mass of $^{8}$He was determined with improved precision over our previous measurement. The obtained masses ... More
Development and Characterisation of a Gas System and its Associated Slow-Control System for an ATLAS Small-Strip Thin Gap Chamber Testing FacilityFeb 04 2017Apr 23 2017A quality assurance and performance qualification laboratory was built at McGill University for the Canadian-made small-strip Thin Gap Chamber (sTGC) muon detectors produced for the 2019-2020 ATLAS experiment muon spectrometer upgrade. The facility uses ... More
Function Fields with Class Number Indivisible by a Prime $\ell$Jun 19 2009It is known that infinitely many number fields and function fields of any degree $m$ have class number divisible by a given integer $n$. However, significantly less is known about the indivisibility of class numbers of such fields. While it's known that ... More
Benford's Law and Continuous Dependent Random VariablesSep 22 2013Dec 27 2013Many mathematical, man-made and natural systems exhibit a leading-digit bias, where a first digit (base 10) of 1 occurs not 11% of the time, as one would expect if all digits were equally likely, but rather 30%. This phenomenon is known as Benford's Law. ... More
Nuclei in the CosmosFeb 18 2009This white paper, directed to the Stars and Stellar Evolution panel, has three objectives: 1) to provide the Astro2010 Decadal Survey with a vista into the goals of the nuclear physics and nuclear astrophysics community; 2) to alert the astronomical community ... More
The Single-Particle Structure of Neutron-Rich Nuclei of Astrophysical Interest at the Ornl HribfNov 25 2002The rapid nuetron-capture process (r process) produces roughly half of the elements heavier than iron. The path and abundances produced are uncertain, however, because of the lack of nuclear strucure information on important neutron-rich nuclei. We are ... More
New Constraints on the 18F(p,alpha) 15O Rate in Novae from the (d,p) ReactionMay 27 2004Jan 11 2005The degree to which the (p,gamma) and (p,alpha) reactions destroy 18F at temperatures 1-4x10^8 K is important for understanding the synthesis of nuclei in nova explosions and for using the long-lived radionuclide 18F, a target of gamma-ray astronomy, ... More
Tau trigger at the ATLAS experimentOct 02 2008Oct 20 2008Many theoretical models, like the Standard Model or SUSY at large tan(beta), predict Higgs bosons or new particles which decay more abundantly to final states including tau leptons than to other leptons. At the energy scale of the LHC, the identification ... More
Performance of a Full-Size Small-Strip Thin Gap Chamber Prototype for the ATLAS New Small Wheel Muon UpgradeSep 21 2015The instantaneous luminosity of the Large Hadron Collider at CERN will be increased up to a factor of five with respect to the present design value by undergoing an extensive upgrade program over the coming decade. The most important upgrade project for ... More
$s$-wave scattering lengths for the $^7$Be+$p$ system from an $\textit{R}$-matrix analysisFeb 01 2019The astrophysical $S$-factor for the radiative proton capture reaction on $^7$Be ($S_{17}$) at low energies is affected by the $s$-wave scattering lengths. We report the measurement of elastic and inelastic scattering cross sections for the $^7$Be+$p$ ... More
$s$-wave scattering lengths for the $^7$Be+$p$ system from an $\textit{R}$-matrix analysisFeb 01 2019Apr 03 2019The astrophysical $S$-factor for the radiative proton capture reaction on $^7$Be ($S_{17}$) at low energies is affected by the $s$-wave scattering lengths. We report the measurement of elastic and inelastic scattering cross sections for the $^7$Be+$p$ ... More
Solar Fusion Cross SectionsMay 12 1998May 12 1998We review and analyze the available information for nuclear fusion cross sections that are most important for solar energy generation and solar neutrino production. We provide best values for the low-energy cross-section factors and, wherever possible, ... More
$s$-wave scattering lengths for the $^7$Be+p system from an $\textit{R}$-matrix analysisFeb 01 2019May 07 2019The astrophysical $S$-factor for the radiative proton capture reaction on $^7$Be ($S_{17}$) at low energies is affected by the $s$-wave scattering lengths. We report the measurement of elastic and inelastic scattering cross sections for the $^7$Be+p system ... More
White Paper on Nuclear AstrophysicsMar 04 2016Mar 24 2016This white paper informs the nuclear astrophysics community and funding agencies about the scientific directions and priorities of the field and provides input from this community for the 2015 Nuclear Science Long Range Plan. It summarizes the outcome ... More
Catching Element Formation In The ActFeb 08 2019Gamma-ray astronomy explores the most energetic photons in nature to address some of the most pressing puzzles in contemporary astrophysics. It encompasses a wide range of objects and phenomena: stars, supernovae, novae, neutron stars, stellar-mass black ... More
Determination of the width of the top quarkSep 28 2010We extract the total width of the top quark, Gamma_t, from the partial decay width Gamma(t -> W b) measured using the t-channel cross section for single top quark production and from the branching fraction B(t -> W b) measured in ttbar events using up ... More
Precise measurement of the top quark mass in the dilepton channel at D0May 02 2011Aug 28 2011We measure the top quark mass (mt) in ppbar collisions at a center of mass energy of 1.96 TeV using dilepton ttbar->W+bW-bbar->l+nubl-nubarbbar events, where l denotes an electron, a muon, or a tau that decays leptonically. The data correspond to an integrated ... More
Measurement of the W boson helicity in top quark decays using 5.4 fb^-1 of ppbar collision dataNov 30 2010Sep 20 2012We present a measurement of the helicity of the W boson produced in top quark decays using ttbar decays in the l+jets and dilepton final states selected from a sample of 5.4 fb^-1 of collisions recorded using the D0 detector at the Fermilab Tevatron ppbar ... More
Search for pair production of the scalar top quark in muon+tau final statesFeb 09 2012We present a search for the pair production of scalar top quarks ($\tilde{t}_{1}$), the lightest supersymmetric partners of the top quarks, in $p\bar{p}$ collisions at a center-of-mass energy of 1.96 TeV, using data corresponding to an integrated luminosity ... More
Search for pair production of the scalar top quark in the electron-muon final stateSep 29 2010We report the result of a search for the pair production of the lightest supersymmetric partner of the top quark ($\tilde{t}_1$) in $p\bar{p}$ collisions at a center-of-mass energy of 1.96 TeV at the Fermilab Tevatron collider corresponding to an integrated ... More
Combination of CDF and D0 measurements of the W boson helicity in top quark decaysFeb 23 2012We report the combination of recent measurements of the helicity of the W boson from top quark decay by the CDF and D0 collaborations, based on data samples corresponding to integrated luminosities of 2.7 - 5.4 fb^-1 of ppbar collisions collected during ... More
Expected Performance of the ATLAS Experiment - Detector, Trigger and PhysicsDec 28 2008Aug 14 2009A detailed study is presented of the expected performance of the ATLAS detector. The reconstruction of tracks, leptons, photons, missing energy and jets is investigated, together with the performance of b-tagging and the trigger. The physics potential ... More