3,707 research outputs found
Measurement of the production cross section in collisions at = 8 TeV using the and channels with the ATLAS detector
No full textSee paper for full list of authors - 55 pages in total, author list starting page 39, 9 figures, 11 tables, submitted to JHEP. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2014-16/International audienceA measurement of the production in the and channels in proton--proton collisions at TeV at the Large Hadron Collider at CERN, using data corresponding to an integrated luminosity of 20.3 fb collected by the ATLAS experiment in 2012 is presented. The fiducial cross sections for and are measured in selected phase-space regions. The total cross section for events produced with both bosons in the mass range 66 to 116 GeV is measured from the combination of the two channels to be pb, which is consistent with the Standard Model prediction of pb. The differential cross sections in bins of various kinematic variables are presented. The differential event yield as a function of the transverse momentum of the leading boson is used to set limits on anomalous neutral triple gauge boson couplings in production
Past veterinarians in South Africa
No full textAn alphabetical list containing short biographies of all deceased South African veterinarians up to 1990.[compiled by] P.J. (Bill) PosthumusVolume 1: AL -- Volume 2: M-ZAlso available in print http://137.215.9.20/record=b1893606ab2013ab201
Open brief aan den WelEdel. Gestr. Heer P.J. Joubert
No full textleyds-70-7201.pdf created from original pamphlet in the WJ Leyds Collection held in the Africana Section of the Stellenbosch University Library and Information Service.Dutch open letter to P.J. Joubert concerning a railroad concession granted to the author and two of his friends in 1885
Tests of lepton universality using and decays
No full textTests of lepton universality in and decays where is either an electron or a muon are
presented. The differential branching fractions of and
decays are measured in intervals of the dilepton
invariant mass squared. The measurements are performed using proton-proton
collision data recorded by the LHCb experiment, corresponding to an integrated
luminosity of . The results are consistent with the
Standard Model and previous tests of lepton universality in related decay
modes. The first observation of and decays is reported.Comment: All figures and tables, along with any supplementary material and
additional information, are available at
https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2021-038.html. v2 -
Added two more leptoquark references, and fixed formatting bugs in arXiv
title and abstract. v3 - Version of paper published in PR
Search for heavy resonances in the and final states using proton--proton collisions at TeV with the ATLAS detector
No full textA search for heavy resonances decaying into a pair of bosons leading to and final states, where stands for either an electron or a muon, is presented. The search uses proton--proton collision data at a centre-of-mass energy of 13 TeV corresponding to an integrated luminosity of 36.1 collected with the ATLAS detector during 2015 and 2016 at the Large Hadron Collider. The mass range of the hypothetical resonances considered is between 200 GeV and 2000 GeV depending on the final state, and the model considered. The results are interpreted as upper limits on the production cross section of a spin-0 or spin-2 resonance. The upper limits for the spin-0 resonance are translated to exclusion contours in the context of Type-I and Type-II two-Higgs-doublet models, while those for the spin-2 resonance are used to constrain the Randall–Sundrum model with an extra dimension giving rise to spin-2 graviton excitations
Design, Modeling and Simulation of a 52MHz MEMS Gyroscope Device in 1.5um SOI
No full textIn this thesis , a simulation model of a MEMS gyroscope is presented. The model enables mode matching and analysis of the dynamic behavior of a gyroscope. Furthermore, the model allows the optimization the design parameters of the gyroscope. The simulated gyroscope operates at a frequency of 52MHz with amplitudes of 10nm and quality factor of 50,000. Finally, the drive mode measurements are presented at different bias voltages.Microelectronics & Computer EngineeringElectrical Engineering, Mathematics and Computer Scienc
Het gemeentelijk Investeringsraadsel: Het verband tussen gemeentelijke investeringen en lokale welvaartsontwikkeling
No full textDit proefschrift gaat over de vraag in hoeverre in Nederland de lokale welvaartsontwikkeling wordt bepaald door de gemeentelijke investeringsinspanning. Op project niveau is meestal wel het een en ander bekend over de maatschappelijke effecten, maar over de impact van de totale investeringsinspanning ontbreekt zowel fundamentele als toepasbare kennis. Het is een raadsel dat nog opgelost dient te worden. De doelstelling van dit proefschrift is daaraan een bijdrage te leveren.Housing System
Coupled thermo–hydro–mechanical processes for the Dutch radioactive waste repository
No full textDisposal of spent nuclear fuel and long lived radioactive waste in deep clay geological formations is one of the promising options worldwide. In this concept of the geological disposal system, the Boom Clay is considered as a potential host rock when designing a generic waste repository in the Netherlands. For design and evaluation of a repository for geologic disposal of nuclear wastes one of its principal concern is the thermal loading. High-level radioactive waste and spent fuel generate considerable amounts of heat. When those waste types are disposed in a geological repository the elevated thermal effect on the behaviour of soils surrounding nuclear waste disposal give rise to change in hydraulic and mechanical properties is a significant factor for repository design. Understanding these time-dependent phenomena processes in relation to both the effects of pore water dissipation and of the thermal expansion is essential for reliably assessing repository performance and evaluating the safety case. This paper presents some of the investigation on the thermal processes with emphasis on the coupled Thermo-Hydro- Mechanical (THM) processes for the disposal concept of a radioactive waste disposal facility, in Boom Clay at a depth of about 500m.Geo-engineerin
Search for a new resonance decaying to a or boson and a Higgs boson in the final states with the ATLAS Detector
No full textSee paper for full list of authors – 14 pages plus author list + cover pages (30 pages total), 4 figures, 1 tables, submitted to EPJC, All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2013-23/International audienceA search for a new resonance decaying to a or boson and a Higgs boson in the final states is performed using 20.3 fb of collision data recorded at 8 TeV with the ATLAS detector at the Large Hadron Collider. The search is conducted by examining the invariant mass distribution for a localized excess. No significant deviation from the Standard Model background prediction is observed. The results are interpreted in terms of constraints on the Minimal Walking Technicolor model and on a simplified approach based on a phenomenological Lagrangian of Heavy Vector Triplets
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