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The ArgoNeuT experiment

Description: ArgoNeuT is a Liquid Argon Time Projection Chamber neutrino experiment that recently completed its physics run in the NuMI beamline at Fermilab. Along with research and design for future LArTPCs, the experiments goals include performing a number of neutrino and anti-neutrino cross section measurements. Also, ArgoNeuT hopes to further the understanding of the nuclear physics involved in neutrino scattering by characterizing the low energy protons created in such interactions.
Date: January 1, 2010
Creator: Spitz, J. & U., /Yale
Partner: UNT Libraries Government Documents Department
open access

D0 results on diphoton direct production and double parton interactions in photon + 3 jet events

Description: We report the measurement of differential diphoton direct production cross sections and a study of photon + 3-jet events with double parton (DP) interactions, based on data taken with the D0 experiment at the Fermilab Tevatron proton-antiproton collider. We measure single differential cross sections as a function of the diphoton mass, the transverse momentum of the diphoton system, the azimuthal angle between the photons, and the polar scattering angle of the photons. In addition, we measure do… more
Date: January 1, 2010
Creator: Sawyer, Lee & U., /Louisiana Tech.
Partner: UNT Libraries Government Documents Department
open access

B baryon production and decays and B hadron lifetimes

Description: In this paper we review the most recent results concerning B Baryons at CDF and D0, including the observation and the study of the properties of the {Omega}{sub b}{sup -}, {Xi}{sub b}{sup -} and {Sigma}{sub b}{sup {+-}(*)}, the observation of new {Lambda}{sub b}{sup 0} decay modes, and a new measurement of the lifetime of the b hadrons in decays with a J/{Psi}. The {Omega}{sub b}{sup -} baryon is observed through the decay chain {Omega}{sub b}{sup -} {yields} J/{Psi}{Omega}{sup -}, where J/{Psi… more
Date: January 1, 2010
Creator: Donati, S.
Partner: UNT Libraries Government Documents Department
open access

Surface characterizatin of palladium-alumina sorbents for high-temperature capture of mercury and arsenic from fuel gas

Description: Coal gasification with subsequent cleanup of the resulting fuel gas is a way to reduce the impact of mercury and arsenic in the environment during power generation and on downstream catalytic processes in chemical production, The interactions of mercury and arsenic with PdlAl2D3 model thin film sorbents and PdlAh03 powders have been studied to determine the relative affinities of palladium for mercury and arsenic, and how they are affected by temperature and the presence of hydrogen sulfide in … more
Date: January 1, 2010
Creator: Baltrus, J. P.; Granite, E. J.; Pennline, H. W.; Stanko, D.; Hamilton, H.; Rowsell, L. et al.
Partner: UNT Libraries Government Documents Department
open access

Measuring the flavor asymmetry in the sea quarks of the proton

Description: The proton is a composite object made of fundamental, strongly-interacting quarks. Many of the features of the proton can be described by a simple picture based on three valence quarks bound by the exchange of gluons. However, protons are much more complex objects with the vast majority of their mass dynamically generated by Quantum Chromodynamics (QCD). This mass manifests itself through a 'sea' of gluons and quark-antiquark pairs. By measuring Drell-Yan scattering, the Fermilab E-906/SeaQuest… more
Date: January 1, 2010
Creator: Reimer, Paul E.
Partner: UNT Libraries Government Documents Department
open access

Latest results from the MINOS experiment

Description: The MINOS experiment utilizes the NuMI neutrino beam to study the phenomenon of neutrino oscillations. Muon neutrinos are sent over a baseline of 735 km, with a detector near the production point at Fermilab and one at the Soudan underground laboratory in northern Minnesota. By observing the {nu}{sub {mu}} disappearance characteristic of oscillations, MINOS can measure the oscillation parameters. MINOS has previously made the best measurement of the atmospheric-regime mass splitting to date. Ne… more
Date: January 1, 2010
Creator: Evans, Justin & London, /University Coll.
Partner: UNT Libraries Government Documents Department
open access

Standard model high mass Higgs search at CDF

Description: The CDF collaboration has analyzed almost 6 f b{sup -1} of data collected at the Tevatron Collider at {radical}{ovr s} = 1.96 TeV to search for Standard Model Higgs boson through the decay into W{sup +}W{sup -}*. Starting from events with two leptons, advanced analysis techniques are applied to better discriminate signal from background. The Higgs sensitivity is maximized combining together analysis that exploit different event topologies. No significant excess over the expected background is o… more
Date: January 1, 2010
Creator: Lucchesi, Donatella
Partner: UNT Libraries Government Documents Department
open access

Measurement of Interfacial Area Production and Permeability within Porous Media

Description: An understanding of the pore-level interactions that affect multi-phase flow in porous media is important in many subsurface engineering applications, including enhanced oil recovery, remediation of dense non-aqueous liquid contaminated sites, and geologic CO2 sequestration. Standard models of two-phase flow in porous media have been shown to have several shortcomings, which might partially be overcome using a recently developed model based on thermodynamic principles that includes interfacial … more
Date: January 1, 2010
Creator: Crandall, Dustin; Ahmadi, Goodarz & Smith, Duane H.
Partner: UNT Libraries Government Documents Department
open access

Minimum bias and underlying event studies at CDF

Description: Soft, non-perturbative, interactions are poorly understood from the theoretical point of view even though they form a large part of the hadronic cross section at the energies now available. We review the CDF studies on minimum-bias ad underlying event in p{bar p} collisions at 2 TeV. After proposing an operative definition of 'underlying event', we present part of a systematic set of measurements carried out by the CDF Collaboration with the goal to provide data to test and improve the QCD mode… more
Date: January 1, 2010
Creator: Moggi, Niccolo & /INFN, Bologna
Partner: UNT Libraries Government Documents Department
open access

Search for new physics in the dijet mass spectrum and dijet ratio in p p collisions at s**(1/2) = 7-TeV

Description: A search for new Physics is performed with inclusive dijet final states in pp collisions, using data corresponding to an integrated luminosity of 120 {+-} 13 nb{sup -1} collected by the CMS experiment at LHC. Generic upper limits at the 95% confidence level (CL) are presented on the product of the resonance cross section, branching fraction into dijets, and acceptance, separately for decays into quark-quark, quark-gluon, or gluon-gluon pairs. The data exclude new particles predicted in the foll… more
Date: January 1, 2010
Creator: Kousouris, Konstantinos
Partner: UNT Libraries Government Documents Department
open access

Measurement of W and Z properties at the Tevatron

Description: The very large sample of proton-antiproton data collected at the Tevatron at {radical}s = 1.96 TeV, allows the two full purpose experiment CDF and D0 to study in detail the properties of W and Z bosons and to exploit them to study high-energy interactions. The very large samples of vector bosons allow also accurate measurement of S.M. parameters which help constrain models of new physics. Last but not least, the W mass, related to the EWSB sector, can help in the long lasting search for the Hig… more
Date: January 1, 2010
Creator: Chiarelli, Giorgio
Partner: UNT Libraries Government Documents Department
open access

Summary report of working group 5: Beam and radiation generation, monitoring, and control

Description: This paper summarizes the activities and presentations of Working Group 5 of the Advanced Accelerator Concepts Workshop held at Annapolis, Maryland in June 2010. Working Group 5 touched on a broad range of topics in the fields of beam and radiation generation and their monitoring and control. These topics were not comprehensively covered in this Workshop, but rather the Working Group concentrated on specific new developments and recent investigations. The Working Group divided its sessions into… more
Date: January 1, 2010
Creator: Church, Mike & Kim, Ki-Yong
Partner: UNT Libraries Government Documents Department
open access

Measurement of the top quark mass at D0

Description: The most recent measurements of the mass of the quark top at D0 are reviewed. The analysis methods include the direct measurement by Matrix Element and Weighting method and the indirect measurement from t{bar t} production cross section. They have been applied on different experimental signatures, all including at least one electron or muon. Measurements include from 1 to 3.6 fb{sup -1} of D0 data. The most recent combination of mass measurements from D0 and from CDF are also quoted.
Date: January 1, 2010
Creator: Petrillo, Gianluca
Partner: UNT Libraries Government Documents Department
open access

Precision measurements of the top quark mass and width with the D0 detector

Description: Since the discovery of the top quark in 1995 at the Fermliab Tevatron Collider, top quark properties have been measured with ever higher precision. In this article, recent measurements of the top quark mass and its width using up to 3.6 fb{sup -1} of D0 data are summarized. Different techniques and final states have been examined and no deviations within these measurements have been observed. In addition to the direct measurements, a measurement of the top quark mass from its production cross s… more
Date: January 1, 2010
Creator: Grohsjean, Alexander & /IRFU, SPP, Saclay
Partner: UNT Libraries Government Documents Department
open access

The Neutral kaon mixing parameter B(K) from unquenched mixed-action lattice QCD

Description: We calculate the neutral kaon mixing parameter B{sub K} in unquenched lattice QCD using asqtad-improved staggered sea quarks and domain-wall valence quarks. We use the '2+1' flavor gauge configurations generated by the MILC Collaboration, and simulate with multiple valence and sea quark masses at two lattice spacings of a {approx} 0.12 fm and a {approx} 0.09 fm. We match the lattice determination of B{sub K} to the continuum value using the nonperturbative method of Rome-Southampton, and extrap… more
Date: January 1, 2010
Creator: Christopher Aubin, Jack Laiho, Ruth S. Van de Water
Partner: UNT Libraries Government Documents Department
open access

Higgs searches at the Tevatron

Description: We present the latest results on searches for the standard and beyond-the-standard model Higgs bosons in proton-antiproton collisions at {radical}s = 1.96 TeV by the CDF and D0 experiments at the Fermilab Tevatron. No significant excess is observed above the expected background, and the cross section limits for the Higgs bosons are calculated. It is noticed that the standard model Higgs boson in the mass range 163-166 GeV/c{sup 2} is excluded at the 95% C.L.
Date: January 1, 2010
Creator: Yamamoto, Kazuhiro & U., /Osaka City
Partner: UNT Libraries Government Documents Department
open access

Pandemic Influenza Pediatric Office Plan Template

Description: This is a planning tool developed by pediatric stakeholders that is intended to assist pediatric medical offices that have no pandemic influenza plan in place, but may experience an increase in patient calls/visits or workload due to pandemic influenza.
Date: January 1, 2010
Creator: CHE, HCTT
Partner: UNT Libraries Government Documents Department
open access

$W/Z$ + jets results from CDF

Description: The CDF Collaboration has a comprehensive program of studying the production of vector bosons, W and Z, in association with energetic jets. Excellent understanding of the standard model W/Z+jets and W/Z+c,b-jets processes is of paramount importance for the top quark physics and for the Higgs boson and many new physics searches. We review the latest CDF results on Z-boson production in association with inclusive and b-quark jets, study of the p{sub T} balance in Z+jet events, and a measurement o… more
Date: January 1, 2010
Creator: Camarda, Stefano
Partner: UNT Libraries Government Documents Department
open access

Search for scalar bottom quarks and third-generation leptoquarks in $p\overline{p}$ collisions at $\sqrt{s}$ = 1.96 TeV

Description: We present the results of a search for pair production of scalar bottom quarks ({bar b}{sub 1}) and scalar third-generation leptoquarks (LQ{sub 3}) in a data sample of 5.2 f b{sup -1} collected by the D0 experiment at the Tevatron, the p{bar p} collider at Fermilab. We assume that sbottoms decay to a neutralino ({bar {chi}}{sub 1}{sup 0}) and a b quark, and we set 95% C.L. lower limits on their production in the (m{sub {bar b}{sub 1}}, m{sub {bar {chi}}{sub 1}{sup 0}}) mass plane such that m{su… more
Date: January 1, 2010
Creator: Deterre, Cecile & /IRFU, SPP, Saclay
Partner: UNT Libraries Government Documents Department
open access

Excited-Nucleon Spectroscopy with 2+1 Fermion Flavors

Description: We present progress made by the Hadron Spectrum Collaboration (HSC) in determining the tower of excited nucleon states using 2+1-flavor anisotropic clover lattices. The HSC has been investigating interpolating operators projected into irreducible representations of the cubic group in order to better calculate two-point correlators for nucleon spectroscopy; results are published for quenched and 2-flavor anisotropic Wilson lattices. In this work, we present the latest results using a new techniq… more
Date: January 1, 2010
Creator: Cohen, Saul; Foley, Justin; Morningstar, Colin; Wong, Ricky; Edwards, Robert G; Joo, Balint et al.
Partner: UNT Libraries Government Documents Department
open access

Search for new physics with photons and exclusive Z production at the Tevatron

Description: We report the results of searches for non-standard model phenomena in photon final states and a search for exclusive Z boson production. These searches use data from p{bar p} collisions at {radical}s = 1.96 TeV collected with the CDF and D0 detectors at the Fermilab Tevatron corresponding to 1.0-4.2 fb{sup -1} of integrated luminosity. No disagreement of data with standard model predictions is observed. We report limits on the parameters of several models including anomalous triple gauge coupli… more
Date: January 1, 2010
Creator: Krop, Dan
Partner: UNT Libraries Government Documents Department
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