نتایج جستجو برای: channel cross section
تعداد نتایج: 823540 فیلتر نتایج به سال:
Abstract The dark matter relic density may be governed by the presence of new mediators that connect field with Standard Model particles. When particle mass is larger than mediator's, pair production kinematically open. This setup known in literature as secluded matter. Motivated appearance several model building endeavours, we investigate sensitivity TeV gamma-ray instruments Southern Hemisphe...
The theoretical accuracy of the program TOPAZ0 in the large-angle Bhabha channel is estimated. The physical error associated with the full Bhabha cross section and its forward and backward components separately is given for some event selections and several energy points of interest for LEP1 physics, both for the s and non-s contributions to the cross section. E-mail: [email protected] nicros...
The process of pollutant mixing is significantly influenced by secondary flow and turbulence in meandering rivers. To investigate the influence different point source release positions on sinuous open channel flows, a 3D large-eddy simulation (LES) model based OpenFOAM was established to simulate passive scalar transport with rectangular cross-section. After verification flume experiment, two s...
This paper deals with MIMO channel modeling according to the correlation level in underground railway tunnels for various antenna configurations for the transmitting and receiving arrays. MIMO channel matrices have been computed with a 3D ray-tracing based software at 2.4 GHz and 5.8 GHz in two different tunnel environments: 1) a 1-track empty tunnel with a square cross section, 2) a 1-track tu...
The normalised differential top quark-antiquark production cross section is measured as a function of the jet multiplicity in proton-proton collisions at a centre-of-mass energy of 7 TeV at the LHC with the CMS detector. The measurement is performed in both the dilepton and lepton+jets decay channels using data corresponding to an integrated luminosity of 5.0 fb −1. Using a procedure to associa...
This paper reports on the fabrication and experimental characterisation of improved design AC eletroosmotic micropumps. Since the first study and analysis of AC electroosmosis by Ramos et al. [1], many devices have been fabricated and tested [2]. The basic planar electrode design was improved and increased pumping velocities were measured. Among the proposed improvements, 3D electrode design se...
The electrokinetic flow resistance (electroviscous effect) is predicted for steady state, pressure-driven liquid flow at low Reynolds number in a microfluidic contraction of rectangular cross-section. Calculations of the three dimensional flow are performed in parallel using a finite volume numerical method. The channel walls are assumed to carry a uniform charge density and the liquid is taken...
The electrokinetic flow resistance (electroviscous effect) is predicted for steady state, pressure-driven liquid flow at low Reynolds number in a microfluidic contraction of rectangular cross-section. Calculations of the three dimensional flow are performed in parallel using a finite volume numerical method. The channel walls are assumed to carry a uniform charge density and the liquid is taken...
Rapid mixing of liquids is important for most microfluidic applications. However, mixing is slow in conventional micromixers, because, in the absence of turbulence, mixing here occurs by molecular diffusion. Recent experiments show that mixing can be enhanced by generating transient flow resulting in chaotic advection. While these are planar microchannels, here we show that three-dimensional or...
Measurements of fiducial cross-sections for t ¯ t production with one or two additional b-jets in pp collisions at √ s = 8 TeV using the ATLAS detector Abstract Fiducial cross-sections for t ¯ t production with one or two additional b-jets are reported, using an integrated luminosity of 20.3 fb −1 of proton–proton collisions at a centre-of-mass energy of 8 TeV at the Large Hadron Col-lider, col...
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