Physics of Particles and Nuclei Letters This is an RSS file. You can use it to subscribe to this data in your favourite RSS reader or to display this data on your own website or blog.

NLO QCD Corrections to Higgs Boson Production in Association with Gauge Bosons in Proton –Proton Collisions at $$\sqrt s $$ = 14 TeV
AbstractWe suggest some predictions for Standard Model Higgs boson production in association with gauge bosons in proton-proton collisions at\(\sqrt s \) = 14 TeV. Our calculation includes the NLO QCD corrections of these processes using the MadGraph5\(\_\)aMC@NLO event generator. We study the impact of these corrections on the total cross sections and on various kinematical distributions. (Source: Physics of Particles and Nuclei Letters)
Source: Physics of Particles and Nuclei Letters - June 1, 2022 Category: Physics Source Type: research

Evaluation of Effective Parameters on a Simple Muon Detector Efficiency Using GEANT4 Monte Carlo Model
AbstractMuons are detected due to the Cherenkov radiation of electrons caused by muon decay. Different parameters can affect the efficiency of the muon Cherenkov detector. In this paper, a simple water Cherenkov detector was simulated using Geant4 Monte Carlo code. Then, the performance of Cherenkov detector was evaluated using considering of effect of some parameters such as the number of PMTs, the height of the detector, and the reflector effect. The information such as mean lifetime of muon, electron energy spectrum of muon decay, and detector efficiency was measured. The mean relative error indicates good agreement bet...
Source: Physics of Particles and Nuclei Letters - June 1, 2022 Category: Physics Source Type: research

NLO QCD Corrections to the Processes pp → ZZ with 0, 1, and 2 Jets at the LHC
AbstractWe propose an implementation ofZZ,ZZj andZZjj productions in MadGraph5_aMC@NLO framework at\(\sqrt s = 14\) TeV. We calculate these processes at leading order and next-to-leading order with QCD corrections and we present a theoretical prediction of their total cross sections with different cuts in transverse momentum of jets, including gluon fusion contributions. In the same time we estimate their theoretical uncertainty. We discuss the various kinematical distributions spectrums at partonic and hadronic levels applying the showering and hadronization using Pythia8. In order to reconstruct the events similar to tha...
Source: Physics of Particles and Nuclei Letters - June 1, 2022 Category: Physics Source Type: research

Timelike and Spacelike Vectors Transform into Null Vectors through Local Gauge Transformations
AbstractThrough a series of papers many results in group theory have been proven. These results establish a direct link between the local gauge groups of transformations of the Standard Model and local groups of transformations of a new kind of tetrad vectors in four-dimensional Lorentzian spacetimes. These links between these two sets of local groups of transformations are isomorphisms. Because the local planes of covariant diagonalization of stress-energy tensors in Yang –Mills theories have been proven to be the local planes of gauge symmetry, simultaneously. It is in this context that we wish to establish a new kind ...
Source: Physics of Particles and Nuclei Letters - June 1, 2022 Category: Physics Source Type: research

Total Capture Rate of Negative Muons in 24Mg
AbstractA description of an experiment devoted to determining the total capture rates of negative muons in24Mg is presented. The investigations are carried out using a low-energy muon beam with high intensity (104 s–1) at the S μS meson facility in Villigen, Switzerland, with the help of the mini-Ball cluster of HPGe detectors. The experimental approach based on our previous works is described. The justification of the difference between these methods and those used in previous investigations is presented. It is pointed o ut that our method is potentially much more precise and does not depend on the muon absorption in t...
Source: Physics of Particles and Nuclei Letters - June 1, 2022 Category: Physics Source Type: research

The Cytotoxicity of ZnO NPs on Breast Cancer Cell Lines MCF-7 Depending on the Dispersion Solution
AbstractHowever, the number of in vitro studies are being published regarding the cytotoxicity of nanomaterials is on the increase, the components of the media for toxicity assays have often varied according to the needs of the scientists. Our aim for this study was to: (1) evaluate the influence of serum —in this case, fetal bovine serum FBS, Phosphate Buffer Saline PBS, water for injection in a cell culture medium on the toxicity of nano-sized (20–30 nm) ZnO on human breast cancer cell line (MCF-7) and (2) use very small dose that make 50% of cancer cell death after treatment in order to the no rmal cells can get rid...
Source: Physics of Particles and Nuclei Letters - June 1, 2022 Category: Physics Source Type: research

Possible Applications of Saccharomyces boulardii in Space Medicine
AbstractDuring space flight, the astronaut ’s body is continuously exposed to various stress factors which can have a negative impact on the health and working capacity. The yeastS. boulardii has pronounced probiotic, immunostimulating, anti-inflammatory, antitoxic properties that contribute to the rapid restoration of normal intestinal microbiota and the destruction of pathogenic microorganisms at an early stage. The aim of this work was to study the cell viability and mutability of probioticSaccharomycesboulardii strains under the action of high-energy protons in doses of 5 –20 Gy. Experiments demonstrated normal gro...
Source: Physics of Particles and Nuclei Letters - June 1, 2022 Category: Physics Source Type: research

Unique Radioprotective Damage Suppressor Protein (Dsup): Comparative Sequence Analysis
AbstractTardigrades are one of the most stress-resistant complex organisms on the Earth, of particular interest is their high radioresistance. The protein Dsup (Damage suppressor) recently discovered inR.  varieornatus is directly related to a decrease of the level of nuclear DNA damage by ionizing radiation; however, the mechanism of this process is not fully understood. To better understand the function and origin of the Dsup protein, a comparative analysis of the amino acid sequence of this protein with the amino acid sequences of proteins in open databases was carried out. We showed that other DNA-binding proteins of ...
Source: Physics of Particles and Nuclei Letters - June 1, 2022 Category: Physics Source Type: research

Radionuclides Distribution and Associated Ecological Risk in the Environment of Armenian Mountains
AbstractThe paper summarizes the results of radioecological monitoring in the mountainous regions of Armenia in order to identify the distribution of radionuclides (natural Ra-226, Th-232 and artificial Cs-137) and the associated environmental risks in the mountainous environment of Armenia. Soil samples from the surface of eight mountain ridges and massifs were collected along altitude (900 –3200 m above sea level). Gamma spectrometry has been used to identify radionuclides and measure activity concentration. A significant correlation was found between Ra-226 and Th-232, no statistically significant correlation was obse...
Source: Physics of Particles and Nuclei Letters - June 1, 2022 Category: Physics Source Type: research

The Study of the Radioecological Situation in the Environment Surroundings the Coal Power Plant
AbstractThe results of analyzing of the radioecological situation near the TPP-4, Ulan Bator, Mongolia are presented in this work. Content of radioisotopes (U- and Th-series,40K,137Сs) in the coal, bottom ash, fly ash samples as well as soil and plants using gamma-activation analysis and gamma-spectrometry has been determined. Specific effective activity (Aeff) of ash wastes was calculated. (Source: Physics of Particles and Nuclei Letters)
Source: Physics of Particles and Nuclei Letters - June 1, 2022 Category: Physics Source Type: research

DNA Double Strand Breaks Induced by Ultrashort Pulsed Electron Beam Irradiation in Human Blood Cancer and Normal Cells
AbstractQuickly developing laser technologies have started the evolution of laser-generated particle accelerators as an alternative to current equipment. The aim of this work was to analyze the formation and repair of phosphorylated histone γH2AX as a marker of DNA double strand breaks by flow cytometry in human chronic myeloid leukemia (K562) and normal peripheral blood mononuclear cells (PBMCs) in response to ultrashort pulsed electron beam irradiation. Our results indicated that DNA DSBs formation level and repair kinetics was diff erent in cancerous K562 and normal PBMC cells. (Source: Physics of Particles and Nuclei Letters)
Source: Physics of Particles and Nuclei Letters - June 1, 2022 Category: Physics Source Type: research

Investigation of Malignant Neoplasms Morbidity of the Ovaries in Women Depending on Environmental Conditions of Residence
AbstractWe used the data of official state statistics for 2000 –2020 to test the hypothesis about the effect of environmental conditions—radioactive (following the Chernobyl disaster) and chemical pollutants on the incidence of ovarian malignant neoplasms in the female population of the Bryansk region. A variety of statistical approaches were used to estima te the incidence of ovarian malignancies, including the Shapiro-Wilk test, Mann-Whitney U-test, Spearman’s rank correlation test, and linear regression. We did not establish statistically significant differences in the frequency of primary morbidity of women with ...
Source: Physics of Particles and Nuclei Letters - June 1, 2022 Category: Physics Source Type: research

Equivalent Circuit Method Application for Traveling Wave Accelerating Structure Wave Mode Converter Coupler Tuning
AbstractNowadays design of accelerating structures and traveling wave mode converter coupler cells in particular is almost excursively done using 2.5D and 3D codes based on finite elements method. These methods are extremely versatile and precise but require a lot of computational power. This paper describes mode converter coupler matching method using both finite element and equivalent circuit methods. Analytical calculation using equivalent circuit method provides an initial coupler parameter set for the finite element method calculations, accelerating further parameter conversion and reducing overall calculation time. (...
Source: Physics of Particles and Nuclei Letters - June 1, 2022 Category: Physics Source Type: research

Increase in the Level of Doxorubicin-Induced DNA Damage in HeLa Cells with CRISPR/Cas9 Mediated HIST1H1B Gene Knockout
Abstract—Important role in cancer development and progression is related to changes in modifications of histones. Doxorubicin is a class of chemotherapy drug, that declines or stops the development of cancer cells. The aim of this study was to increase the genotoxic potential of doxorubicin via knockout of the H1.5 histone HIST1H1B gene, using CRISPR/Cas9 technology. Due to our results DOX significantly increases the levels of DNA damage in the HeLa cell after the knockout of the HIST1H1B gene using CRISPR/Cas9. (Source: Physics of Particles and Nuclei Letters)
Source: Physics of Particles and Nuclei Letters - June 1, 2022 Category: Physics Source Type: research

Thermal/Fast Fission Yield Ratio Signature for Neutron Interrogation of Nuclear Materials
AbstractFission product yields were used to certify the enrichment of natural uranium sample by performing a comprehensive study of the yield pattern of some fission products formed in thermal neutron-induced fission of235U and fast-induced fission of238U, which relies on delayed gamma-ray measurements from short-lived fission products. The present experiment was conducted to demonstrate the utilization of Am ‒Be isotopic neutron source as an active neutron interrogation source to provide information on thermal and fast neutron-induced fission on235U and238U, respectively. Natural uranium sample was used and certified. T...
Source: Physics of Particles and Nuclei Letters - April 1, 2022 Category: Physics Source Type: research