Navegação por Assunto "Hadrons"
Resultados 21-40 de 70
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Estrutura nuclear de estrelas compactas
(2000) [Dissertação]Este trabalho tem como objetivo o estudo da matéria nuclear a altas densidades considerando-se as fases hadrônica e de quarks à temperatura nula e finita, com vistas a aplicações no estudo de propriedades estáticas globais ... -
Estudo de correções relativísticas para o espalhamento ηc-núcleon no Método do Grupo Ressonante
(2015) [Dissertação]Estudamos os efeitos de correções relativísticas a interação spin-spin no espalhamento núcleon no modelo de quarks. No nível dos hádrons utilizamos o Método do Grupo Ressonante (RGM) em segunda quantização para obter um ... -
Estudo sobre a produção inclusiva de hádrons em colisões próton-próton nos formalismos colinear e do Condensado de Vidro de Cor (CGC)
(2017) [Dissertação]Apresentaremos um estudo sobre a produção inclusiva de hádrons em colisões próton-próton (pp), através do espectro pT do momento transverso dos hádrons produzidos. É esperado que em regiões de grande densidade de glúons, ... -
First measurement of large area jet transverse momentum spectra in heavy-ion collisions
(2021) [Artigo de periódico]Jet production in lead-lead (PbPb) and proton-proton (pp) collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV is studied with the CMS detector at the LHC, using PbPb and pp data samples corresponding to ... -
First study of the two-body scattering involving charm hadrons
(2022) [Artigo de periódico]This article presents the first measurement of the interaction between charm hadrons and nucleons. The two-particle momentum correlations of p D − and ¯ p D + pairs are measured by the ALICE Collaboration inhigh-multiplicity ... -
In-medium modification of dijets in PbPb collisions at √snn = 5.02 TeV
(2021) [Artigo de periódico]Modifications to the distribution of charged particles with respect to high transverse momentum (pT) jets passing through a quark-gluon plasma are explored us ing the CMS detector. Back-to-back dijets are analyzed in ... -
Investigando a entropia de emaranhamento das distribuições partônicas
(2020) [Dissertação]Este trabalho tem como objetivo analisar a noção de entropia dos glúons na função de onda hadrônica no regime de altas energias (pequeno x de Bjorken) e sua conexão com a multiplicidade de partículas no estado final. Como ... -
Investigating the inclusive transverse spectra in high-energy pp collisions in the context of geometric scaling framework
(2020) [Artigo de periódico]The presence of geometric scaling within the pT spectra of produced hadrons at high energy pp collisions using small-x kT-factorization is investigated. It is proposed a phenomenological parameterization for the unintegrated ... -
Investigating the soft processes within the QCD color dipole picture
(2019) [Artigo de periódico]We consider the QCD parton saturation models to describe the soft interactions at the high-energy limit. The total and elastic cross-sections, as well as the elastic slope parameter, are obtained for proton-proton and ... -
J/(psi) suppression in electro-and hadroproduction : a conventional physics explanation
(1994) [Artigo de periódico]Having in mind the importance of the phenomenon for the search for the quark-gluon plasma in the collision of heavy nuclei, we study the suppression of J/Ψ production in leptoproduction and hadroproduction on heavy nuclear ... -
J/ψ production at midrapidity in p-Pb collisions at √sNN = 8.16 TeV
(2023) [Artigo de periódico]The production of inclusive, prompt and non-prompt J/ψ was studied for the first time at midrapidity (−1.37 < ycms < 0.43) in p-Pb collisions at √ sNN = 8.16 TeV with the ALICE detector at the LHC. The inclusive J/ψ mesons ... -
KS 0- and (anti-) Λ- hadron correlations in pp collisions at √ s = 13 TeV
(2021) [Artigo de periódico]Two-particle Azimuthal correlations are measured with the ALICE apparatus in pp collisions at s√=13 TeV to explore strangeness- and multiplicity-related effects in the fragmentation of jets and the transition regime between ... -
Longitudinal and azimuthal evolution of two-particle transverse momentum correlations in Pb–Pb collisions at √sNN = 2.76 TeV
(2020) [Artigo de periódico]This paper presents the first measurements of the charge independent (CI) and charge dependent (CD) two-particle transverse momentum correlators GCI 2 and GCD 2 in Pb–Pb collisions at √sNN = 2.76 TeV by the ALICE collaboration. ... -
Measurement and QCD analysis of double-differential inclusive jet cross sections in proton-proton collisions at √s = 13 TeV
(2022) [Artigo de periódico]A measurement of the inclusive jet production in proton-proton collisions at the LHC at √ s = 13 TeV is presented. The double-differential cross sections are measured as a function of the jet transverse momentum pT and the ... -
Measurement of electrons from semileptonic heavy-flavour hadron decays at midrapidity in pp and Pb–Pb collisions at √sNN = 5.02 TeV
(2020) [Artigo de periódico]The differential invariant yield as a function of transverse momentum (pT) of electrons from semileptonic heavy-flavour hadron decays was measured at midrapidity in central (0–10%), semi-central (30–50%) and peripheral ... -
Measurement of inclusive J/ψ pair production cross section in pp collisions at √s = 13 TeV
(2023) [Artigo de periódico]The production cross section of inclusive J/ψ pairs in pp collisions at a center-of-mass energy √s = 13 TeV is measured with ALICE. The measurement is performed for J/ψ in the rapidity interval 2.5 < y < 4.0 and for ... -
Measurement of properties of B0s → μ+μ− decays and search for B0→ μ+μ− with the CMS experiment
(2020) [Artigo de periódico]Results are reported for the B0s→ μ+μ− branching fraction and effective lifetime and from a search for the decay B0→ μ+μ−. The analysis uses a data sample of proton-proton collisions accumulated by the CMS experiment in ... -
Measurement of the angle between jet axes in pp collisions at √s = 5.02 TeV
(2023) [Artigo de periódico]This article reports measurements of the angle between differently defined jet axes in pp collisions at √ s = 5.02 TeV carried out by the ALICE Collaboration. Charged particles at midrapidity are clustered into jets with ... -
Measurement of the jet mass distribution and top quark mass in hadronic decays of boosted top quarks in pp collisions at √s = 13 TeV
(2020) [Artigo de periódico]A measurement is reported of the jet mass distribution in hadronic decays of boosted top quarks produced in p p collisions at √ s = 13 TeV . The data were collected with the CMS detector at the LHC and correspond to ... -
Measurement of the top quark forward-backward production asymmetry and the anomalous chromoelectric and chromomagnetic moments in pp collisions at √s= 13 TeV
(2020) [Artigo de periódico]The parton-level top quark (t) forward-backward asymmetry and the anomalous chromoelectric (d^t) and chromomagnetic (μ^t) moments have been measured using LHC pp collisions at a center-of-mass energy of 13 TeV, collected ...