Transverse single-spin asymmetries in the production of direct photons at the Nuclotron-based Ion Collider fAcility (NICA) are studied within the generalized parton model and its color ...gauge-invariant extension. Predictions for the possible asymmetry values at various NICA energies are presented. A kinematical region where the contribution of the gluon Sivers function to the asymmetry in question is dominant over the quark Sivers function is found.
We study inclusive dijet azimuthal decorrelations in proton-proton collisions at the CERN LHC invoking the hypothesis of parton Reggeization in t-channel exchanges at high energies. In the parton ...Reggeization approach, the main contribution to the azimuthal angle difference between the two most energetic jets is due to the Reggeon-Reggeon-particle-particle scattering, when the fusion of two Reggeized gluons into a pair of Yang-Mills gluons dominates. Using a high-energy factorization scheme with the Kimber-Martin-Ryskin unintegrated parton distribution functions and the Fadin-Lipatov effective vertices we obtain good agreement of our calculations with recent measurements by the ATLAS and CMS Collaborations at the CERN LHC.
The production of D mesons in proton-proton collisions at the LHCb detector is studied. We consider the single production of D0/D¯0, D±, D*±, and Ds± mesons and correlation spectra in the production ...of DD¯ and DD pairs at the S=7 TeV and S=13 TeV. In case of the single D-meson production we calculate differential cross sections over transverse momentum pT while in the pair DD¯, DD-meson production the cross sections are calculated over the azimuthal angle difference Δφ, rapidity difference Δy, invariant mass of the pair M and over the pT of the one meson from a pair. The cross sections are obtained at the leading order of the parton Reggeization approach using Kimber-Martin-Ryskin unintegrated parton distribution functions in a proton. To describe the D-meson production we use universal scale-dependent c-quark and gluon fragmentation functions fitted to e+e− annihilation data from CERN LEP1. Our predictions find a good agreement with the LHCb Collaboration data within uncertainties and without free parameters.
The Spin Physics Detector (SPD) is a future multipurpose experiment foreseen to run at the NICA collider, which is currently under construction at the Joint Institute for Nuclear Research (JINR, ...Dubna, Russia). The physics program of the experiment is based on collisions of longitudinally and transversely polarized protons and deuterons at s up to 27 GeV and luminosity up to 1032 cm−2 s−1. SPD will operate as a universal facility for the comprehensive study of the unpolarized and polarized gluon content of the nucleon, using complementary probes such as: charmonia, open-charm, and prompt-photon production processes.
The aim of this work is to provide a thorough review of the physics objectives that can potentially be addressed at SPD, underlining related theoretical aspects and discussing relevant experimental results when available. Among different pertinent phenomena particular attention is drawn to the study of the gluon helicity, gluon Sivers and Boer-Mulders functions in the nucleon, as well as the gluon transversity distribution in the deuteron, via the measurement of single and double spin asymmetries.
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•Fabrication route of bilayer planar anode supports with bilayer solid electrolyte.•Anode supports were manufactured by tape casting and magnetron sputtering.•Microstructure and ...mechanical strength were studied to optimize preparation route.•Power density of a model SOFC based on support achieved 1.8 W/cm2 at 800 °C.
Bilayered substrates for anode-supported solid oxide fuel cells (SOFCs), made of NiO and 10 mol.% Sc2O3 and 1 mol.% Y2O3 co-stabilized zirconia (10Sc1YSZ), were produced employing the tape casting technique. The optimization of the pore former (rice starch) content in the starting suspension and thermal treatment conditions provide necessary porosity, simultaneously maintaining sufficiently high mechanical strength of the composite measured by the three-point bending method. Bilayered gas-tight solid electrolyte films of 8 mol.% Y2O3 stabilized zirconia and 10 mol.% Gd2O3 doped ceria (8YSZ/10GDC) were deposited by magnetron sputtering, followed by annealing at 1200 °C. The area-specific power density of a model SOFC achieved 1.8, 1.4, and 0.9 W/cm2 at 800, 750, and 700 °C, respectively.
The article discusses an automated time-tracking system (ATTS) for the academic staff of a Russian university, which is integrated into its enterprise information system (EIS).The ATTS implements a ...mechanism controlling teaching load on the territory of the university as part of the academic staff performance management system based on the analysis of the loss work time rates of teachers caused by violations of their labour discipline. The ATTS is implemented based on the physical access control system (PACS), which provides automated control of safety and regulates the attendance at the university. Introducing the proposed ATTS in the university will allow the managers of the educational and methodical department to put in place effective measures of material incentives for teachers, which will increase their labour discipline and responsibility for the quality of the educational process.
The production of
bosons in proton–proton collisions and the LHC energies is studied. The production cross sections for
bosons and their transverse-momentum spectra are calculated along with the ...lepton angular coefficients as functions of the
-boson transverse momentum. The calculations are performed within the parton Reggeization approach in the leading-order approximation in the strong coupling constant
and with allowance for the next-to-leading-order correction associated with Reggeized-quark scattering on a Reggeized gluon
. A numerical simulation is performed by means of the KaTie Monte Carlo generator. The results of the calculations are compared with experimental data of the ATLAS Collaboration.
In this paper we calculate double longitudinal-spin asymmetries in the direct photon production at the NICA collider in the leading order of the collinear parton model. Predictions for potential ...measurements of asymmetries are presented at different energies of the NICA collider.
The first principles calculations of band gaps and bulk moduli of cesium lead halide perovskite solid solutions, CsPb(
)
3
and CsPb(
)
3
, are performed at the level of general gradient approximation ...of the density functional theory. We use supercell approach for computational modeling of disordered systems, which gives a description of the properties of the structure basing on the average over a set of multiple configurations, namely distributions of different species over a given set of atomic positions. The calculations were performed with the CRYSTAL14 program package. The dependence of the band gap and bulk modulus on the content
are investigated over the whole range
.
The paper focuses on the synthesis of gadolinium-doped ceria (Ce
x
Gd
1 –
x
O
2 –
y
) thin films on the anodes of solid oxide fuel cells by reactive dual magnetron sputtering. Ce
x
Gd
1 –
x
O
2 –
...y
thin films 4 μm thick are deposited in the transition and oxide modes, differing by the oxygen concentration in the vacuum chamber. Residual stresses after the film deposition and thermal annealing in air are determined by the curvature of the anode plates. Dependences are obtained between the deposition modes, residual stresses and parameters of fuel cells with the Ce
x
Gd
1 –
x
O
2 –
y
electrolyte. The surface morphology and cross-section of the films are studied on a scanning electron microscope. The X-ray diffraction analysis is additionally conducted to study the structure of gadolinium-doped ceria thin films using the synchrotron radiation during 1300°С annealing. It is shown that under certain conditions of the film deposition and annealing, compressive stresses can transfer to tensile stresses, which reduces the anode plate deformation after the Ce
x
Gd
1 –
x
O
2 –
y
electrolyte deposition.
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