2,425 research outputs found
Tolstoyan Text and Myth of L. N. Tolstoy in Works by I. Ilf and E. Petrov
No full textTolstoyan text in the works by I. Ilf and E. Petrov is considered. The novelty of the research lies in the fact that the study of supertext structures in modern literary studies is primarily focused on topographical texts (St. Petersburg, Crimea, Venice, London, Perm, etc.) while nominal texts (Pushkinsky, Gogolevsky, Chekhovsky) are little studied and the methodology of their study is not clear. The author offers her definition of Tolstoyan text, as well as methods and techniques for studying such text structures. It is argued that the basis of Tolstoyan text is the myth of L. N. Tolstoy. The structure of the Tolstoyan myth is analyzed, its inherent myths (mythological constant ideas) that were created and reproduced by writers-satirists are revealed. To do this, the author analyzes the novels, stories, feuilletons and essays, as well as documentary materials about the life and death of L. N. Tolstoy, which were made public by the end of the 1920s - mid 1930s. Attention is focused on the originality of Tolstoyan text, typical to satirical works. The question of features of perception of the myth about L. N. Tolstoy is raised in the culture of the first third of the 20th century
The Focus-Group Method: Stages of the Research
No full textIn this article the author examines the full stage-by-stage algorithm of implementing his research based on the focus-group method and including the whole cycle — from receiving the request for research to presenting the final report. Special attention is given both to carrying out the works and procedures, and to preparing the records essential in fulfilling a practical research project
Search for jet quenching with dijets from high-multiplicity pPb collisions at √sNN= 8.16 TeV
No full textThe first measurement of the dijet transverse momentum balance xj in proton-lead (pPb) collisions at a nucleon-nucleon center-of-mass energy of √sNN = 8.16 TeV is presented. The xj observable, defined as the ratio of the subleading over leading jet transverse momentum in a dijet pair, is used to search for jet quenching effects. The data, corresponding to an integrated luminosity of 174.6 nb−1, were collected with the CMS detector in 2016. The xj distributions and their average values are studied as functions of the charged-particle multiplicity of the events and for various dijet rapidity selections. The latter enables probing hard scattering of partons carrying distinct nucleon momentum fractions x in the proton- and lead-going directions. The former, aided by the high-multiplicity triggers, allows probing for potential jet quenching effects in high-multiplicity events (with up to 400 charged particles), for which collective phenomena consistent with quark-gluon plasma (QGP) droplet formation were previously observed. The ratios of xj distributions for high- to low-multiplicity events are used to quantify the possible medium effects. These ratios are consistent with simulations of the hard-scattering process that do not include QGP production. These measurements set an upper limit on medium-induced energy loss of the subleading jet of 1.26% of its transverse momentum at the 90% confidence level in high multiplicity pPb events.Godkänd;2025;Nivå 0;2025-08-04 (u5);Full text license: CC BY 4.0;Funder: SCOAP;</p
Probing Charm Quark Dynamics via Multiparticle Correlations in Pb-Pb Collisions at √sNN=5.02 TeV
No full textMultiparticle azimuthal correlations of prompt D-0 mesons arc measured in Pb-Pb collisions at a nucleon-nucleon center-of-mass energy of root s(NN) = 5.02 TeV. For the first time, a four-particle cumulant method is used to extract the second Fourier coefficient of the azimuthal distribution (v(2)) of D-0 mesons as a function of event centrality and the D-0 transverse momentum. The ratios of the four-particle v(2) values to previously measured two-particle cumulant results provide direct experimental access to event-by-event fluctuations of charm quark azimuthal anisotropies. These ratios are also found to be comparable to those of inclusive charged particles in the event. However, hints of deviations are seen in the most central and peripheral collisions. To investigate the origin of flow fluctuations in the charm sector, these measurements are compared to a model implementing fluctuations of charm quark energy loss via collisional or radiative processes in the quark-gluon plasma. These models cannot quantitatively describe the data over the full transverse momentum and centrality ranges, although the calculations with collisional energy loss provide a better description of the data
Search for Higgs Boson Pair Production in the Four b Quark Final State in Proton-Proton Collisions at √s=13 TeV
No full textA search for pairs of Higgs bosons produced via gluon and vector boson fusion is presented, focusing on the four b quark final state. The data sample consists of proton-proton collisions at a center-of-mass energy of 13 TeV, collected with the CMS detector at the LHC, and corresponds to an integrated luminosity of 138 fb^{-1}. No deviation from the background-only hypothesis is observed. A 95% confidence level upper limit on the Higgs boson pair production cross section is observed at 3.9 times the standard model prediction for an expected value of 7.8. Constraints are also set on the modifiers of the Higgs field self-coupling, κ_{λ}, and of the coupling of two Higgs bosons to two vector bosons, κ_{2 V}. The observed (expected) allowed intervals at the 95% confidence level are -2.3<9.4 (-5.0<12.0) and -0.1<2.2 (-0.4<2.5). These are the most stringent observed constraints to date on the HH production cross section and on the κ_{2 V } coupling
Azimuthal correlations in Z +jets events in proton–proton collisions at s = 13 Te V
No full textAbstract The production of Z bosons associated with jets is measured in pp collisions at s = 13 Te V with data recorded with the CMS experiment at the LHC corresponding to an integrated luminosity of 36.3 fb - 1 . The multiplicity of jets with transverse momentum p T > 30 Ge V is measured for different regions of the Z boson’s p T ( Z ) , from lower than 10 Ge V to higher than 100 Ge V . The azimuthal correlation Δ ϕ between the Z boson and the leading jet, as well as the correlations between the two leading jets are measured in three regions of p T ( Z ) . The measurements are compared with several predictions at leading and next-to-leading orders, interfaced with parton showers. Predictions based on transverse-momentum dependent parton distributions and corresponding parton showers give a good description of the measurement in the regions where multiple parton interactions and higher jet multiplicities are not important. The effects of multiple parton interactions are shown to be important to correctly describe the measured spectra in the low p T ( Z ) regions
Non-Gaussian elliptic-flow fluctuations in PbPb collisions at root S-NN=5.02 TeV
No full textEvent-by-event fluctuations in the elliptic-flow coefficient v(2) are studied in PbPb collisions at root S-NN = 5.02 TeV using the CMS detector at the CERN LHC. Elliptic-flow probability distributions p(v(2)) for charged particles with transverse momentum 0.3 < p(T) < 3.0 GeV/c and pseudorapidity vertical bar eta vertical bar < 1.0 are determined for different collision centrality classes. The moments of the p(v(2)) distributions are used to calculate the v(2) coefficients based on cumulant orders 2, 4, 6, and 8. A rank ordering of the higher-order cumulant results and nonzero standardized skewness values obtained for the p(v(2)) distributions indicate non-Gaussian initial-state fluctuations. Bessel-Gaussian and elliptic power fits to the flow distributions are studied to characterize the initial-state spatial anisotropy. (C) 2018 The Author(s). Published by Elsevier B.V
Author Correction: A portrait of the Higgs boson by the CMS experiment ten years after the discovery
No full textIn the version of this article initially published, CMS Collaboration author names, affiliations and acknowledgements were omitted and have now been included in the HTML and PDF versions of the articl
Measurements of the Higgs Boson Production Cross Section in the Four-Lepton Final State in Proton-Proton Collisions at = 13.6 TeV
No full textThe measurements of the Higgs boson (H) production cross sections performed by the CMS Collaboration in the four-lepton (4ℓ, ℓ = e, μ) final state at a center-of-mass energy = 13.6 TeV are presented. These measurements are based on data collected with the CMS detector at the CERN LHC in 2022, corresponding to an integrated luminosity of 34.7 fb−1. Cross sections are measured in a fiducial region closely matching the experimental acceptance, both inclusively and differentially, as a function of the transverse momentum and the absolute value of the rapidity of the four-lepton system. The H → ZZ → 4ℓ inclusive fiducial cross section is measured to be fb, in agreement with the standard model expectation of fb. © The Author(s) 2025.Science Citation Index Expande
Search for Jet Quenching with Dijets from High-Multiplicity Ppb Collisions at = 8.16 TeV
No full textThe first measurement of the dijet transverse momentum balance xj in proton-lead (pPb) collisions at a nucleon-nucleon center-of-mass energy of = 8.16 TeV is presented. The xj observable, defined as the ratio of the subleading over leading jet transverse momentum in a dijet pair, is used to search for jet quenching effects. The data, corresponding to an integrated luminosity of 174.6 nb−1, were collected with the CMS detector in 2016. The xj distributions and their average values are studied as functions of the charged-particle multiplicity of the events and for various dijet rapidity selections. The latter enables probing hard scattering of partons carrying distinct nucleon momentum fractions x in the proton- and lead-going directions. The former, aided by the high-multiplicity triggers, allows probing for potential jet quenching effects in high-multiplicity events (with up to 400 charged particles), for which collective phenomena consistent with quark-gluon plasma (QGP) droplet formation were previously observed. The ratios of xj distributions for high- to low-multiplicity events are used to quantify the possible medium effects. These ratios are consistent with simulations of the hard-scattering process that do not include QGP production. These measurements set an upper limit on medium-induced energy loss of the subleading jet of 1.26% of its transverse momentum at the 90% confidence level in high multiplicity pPb events. © The Author(s) 2025.Science Citation Index Expande
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