Navegação Ciências Exatas e da Terra por Assunto "Aceleradores de partículas"
Resultados 21-40 de 688
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Bose-Einstein correlations of charged hadrons in proton-proton collisions at √s = 13 TeV
(2020) [Artigo de periódico]Bose-Einstein correlations of charged hadrons are measured over a broad multiplicity range, from a few particles up to about 250 reconstructed charged hadrons in proton-proton collisions at s√ = 13 TeV. The results are ... -
Calibration of the CMS hadron calorimeters using proton-proton collision data at √s = 13 TeV
(2020) [Artigo de periódico]Methods are presented for calibrating the hadron calorimeter system of the CMS detector at the LHC. The hadron calorimeters of the CMS experiment are sampling calorimeters of brass and scintillator, and are in the form of ... -
Calibration of the photon spectrometer PHOS of the ALICE experiment
(2019) [Artigo de periódico]The procedure for the energy calibration of the high granularity electromagnetic calorimeter PHOS of the ALICE experiment is presented. The methods used to perform therelative gain calibration, to evaluate the geometrical ... -
Centrality and pseudorapidity dependence of the charged-particle multiplicity density in Xe–Xe collisions at √sNN = 5.44 TeV
(2019) [Artigo de periódico]In this Letter, the ALICE Collaboration presents the first measurements of the charged-particle multiplicity density, dNch/dη, and total charged-particle multiplicity, Ntotch, in Xe–Xecollisions at a centre-of-mass energy ... -
Centrality and pseudorapidity dependence of the transverse energy density in pPb collisions at √sNN=5.02 TeV
(2019) [Artigo de periódico]The almost hermetic coverage of the CMS detector is used to measure the distribution of transverse energy, ET, over 13.2 units of pseudorapidity, η, for pPb collisions at a center-of-mass energy per nucleon pair of ... -
Centrality and transverse momentum dependence of inclusive J/ψ production at midrapidity in Pb–Pb collisions at √sNN = 5.02 TeV
(2020) [Artigo de periódico]The inclusive J/ψ meson production in Pb–Pb collisions at a center-of-mass energy per nucleon–nucleon collision of √sNN = 5.02 TeV at midrapidity (|y| < 0.9) is reported by the ALICE Collaboration. The measurements are ... -
Centrality dependence of J/ψ and ψ(2S) production and nuclear modification in p-Pb collisions at √sNN = 8.16 TeV
(2021) [Artigo de periódico]The inclusive production of the J/ψ and ψ(2S) charmonium states is studied as a function of centrality in p-Pb collisions at a centre-of-mass energy per nucleon pair √ sNN = 8.16 TeV at the LHC. The measurement is performed ... -
Centrality dependence of the pseudorapidity density distribution for charged particles in Pb–Pb collisions at √sNN=5.02TeV
(2017) [Artigo de periódico]We present the charged-particle pseudorapidity density in Pb–Pb collisions at √sNN=5.02TeVin centrality classes measured by ALICE. The measurement covers a wide pseudorapidity range from −3.5to 5, which is sufficient for ... -
Characterizing the initial conditions of heavy-ion collisions at the LHC with mean transverse momentum and anisotropic flow correlations
(2022) [Artigo de periódico]Correlations between mean transverse momentum [pT] and anisotropic flow coefficients v2 or v3 are measured as a function of centrality in Pb–Pb and Xe–Xe collisions at √sNN = 5.02 TeV and 5.44 TeV, respectively, with ALICE. ... -
Charged jet cross section and fragmentation in proton-proton collisions at √s = 7 TeV
(2019) [Artigo de periódico]We report the differential charged jet cross section and jet fragmentation distributions measured with the ALICE detector in proton-proton collisions at a center-of-mass energy ffiffiffi s p ¼ 7 TeV. Jets with pseudorapidity ... -
Charged-particle angular correlations in XeXe collisions at √sNN=5.44 TeV
(2019) [Artigo de periódico]Azimuthal correlations of charged particles in xenon-xenon collisions at a center-of-mass energy per nucleon pair of √sNN=5.44 TeV are studied. The data were collected by the CMS experiment at the LHC with a total integrated ... -
Charged-particle multiplicity distributions over a wide pseudorapidity range in proton-proton collisions at √ s = 0.9, 7, and 8 TeV
(2017) [Artigo de periódico]We present the charged-particle multiplicity distributions over a wide pseudorapidity range (−3.4<η<5.0) for pp collisions at √ s = 0.9, 7, and 8 TeV at the LHC. Results are based on information from the Silicon Pixel ... -
Charged-particle multiplicity fluctuations in Pb–Pb collisions at √sNN = 2.76 TeV
(2021) [Artigo de periódico]Measurements of event-by-event fluctuations of charged-particle multiplicities in Pb–Pb collisions at √sNN = 2.76 TeV using the ALICE detector at the CERN Large Hadron Collider (LHC) are presented in the pseudorapidity ... -
Charged-particle nuclear modification factors in XeXe collisions at √sNN = 5.02 TeV
(2018) [Artigo de periódico]The di erential yields of charged particles having pseudorapidity within j j < 1 are measured using xenon-xenon (XeXe) collisions at p sNN = 5:44TeV. The data, corresponding to an integrated luminosity of 3.42 b1, were ... -
Charged-particle production as a function of multiplicity and transverse spherocity in pp collisions at s√=5.02 and 13 TeV
(2019) [Artigo de periódico]We present a study of the inclusive charged-particle transverse momentum (pT) spectra as a function of charged-particle multiplicity density at mid-pseudorapidity, dNch/dη, in pp collisions at√s=5.02 and 13 TeV covering ... -
Charged-particle pseudorapidity density at mid-rapidity in p–Pb collisions at √sNN = 8.16 TeV
(2019) [Artigo de periódico]The pseudorapidity density of charged particles, dNch/dη, in p–Pb collisions has been measured at a centreof- mass energy per nucleon–nucleon pair of √ sNN = 8.16 TeV at mid-pseudorapidity for non-single-diffractive events. ... -
Charm-quark fragmentation fractions and production cross section at midrapidity in pp collisions at the LHC
(2022) [Artigo de periódico]Recent pT-integrated cross-section measurements of the ground-state charm mesons and baryons, D0, D+, D+s, Λ+c, and Ξ0c, are used to evaluate the charm fragmentation fractions and production cross section per unit of ... -
Closing in on critical net-baryon fluctuations at LHC energies : cumulants up to third order in Pb–Pb collisions
(2023) [Artigo de periódico]Fluctuation measurements are important sources of information on the mechanism of particle production at LHC energies. This article reports the first experimental results on third-order cumulants of the net-proton distributions ... -
CMS PYTHIA 8 colour reconnection tunes based on underlying-event data
(2023) [Artigo de periódico]New sets of parameter tunes for two of the colour reconnection models, quantum chromodynamics-inspired and gluon-move, implemented in the pythia 8 event generator, are obtained based on the default CMS pythia 8 underlying-event ... -
Coherent and incoherent production of vector mesons in ultraperipheral collisions of xenon ions within the QCD parton saturation approach
(2018) [Artigo de periódico]In this paper, we analyze the exclusive vector meson photoproduction in the recent run using xenon ions at energy of 5.44 TeV performed by the Large Hadron Collider. We focus on the ultraperipheral collisions and provide ...