D. De Jesus Damião
A5107335431- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Cosmology and Gravitation Theories
- Computational Physics and Python Applications
- Neutrino Physics Research
- Astrophysics and Cosmic Phenomena
- Black Holes and Theoretical Physics
- Radiation Detection and Scintillator Technologies
- Medical Imaging Techniques and Applications
- Distributed and Parallel Computing Systems
- Particle Accelerators and Free-Electron Lasers
- Gamma-ray bursts and supernovae
- International Science and Diplomacy
- Radiation Therapy and Dosimetry
- Muon and positron interactions and applications
- Superconducting Materials and Applications
- Advanced Data Storage Technologies
- Scientific Computing and Data Management
- Big Data Technologies and Applications
- Nuclear reactor physics and engineering
- Atomic and Subatomic Physics Research
- Particle accelerators and beam dynamics
Universidade do Estado do Rio de Janeiro
2016-2025
Institute of High Energy Physics
2015-2024
A. Alikhanyan National Laboratory
2014-2024
University of Antwerp
2024
Universidade Estadual Paulista (Unesp)
2023
European Organization for Nuclear Research
2014-2020
Center for Migration Studies of New York
2020
University of Belgrade
2016
Vinča Institute of Nuclear Sciences
2016
Centro Brasileiro de Pesquisas Físicas
2010-2014
In July 2012, the ATLAS and CMS collaborations at CERN Large Hadron Collider announced observation of a Higgs boson mass around 125 gigaelectronvolts. Ten years later, with data corresponding to production 30-times larger number bosons, we have learnt much more about properties boson. The experiment has observed in numerous fermionic bosonic decay channels, established its spin-parity quantum numbers, determined measured cross-sections various modes. Here Collaboration reports most...
Measurements are presented of the Bs0→μ+μ− branching fraction and effective lifetime, as well results a search for B0→μ+μ− decay in proton-proton collisions at s=13TeV LHC. The analysis is based on data collected with CMS detector 2016–2018 corresponding to an integrated luminosity 140fb−1. Bs0 meson lifetime most precise single measurements date. No evidence has been found. All found be consistent standard model predictions previous measurements.
Abstract Since the initial data taking of CERN LHC, CMS experiment has undergone substantial upgrades and improvements. This paper discusses detector as it is configured for third data-taking period Run 3, which started in 2022. The entire silicon pixel tracking was replaced. A new powering system superconducting solenoid installed. electronics hadron calorimeter upgraded. All muon electronic systems were upgraded, stations added, including a gas electron multiplier detector. precision...
A search is reported for near-threshold structures in the <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mi>J</a:mi><a:mo>/</a:mo><a:mi>ψ</a:mi><a:mi>J</a:mi><a:mo>/</a:mo><a:mi>ψ</a:mi></a:mrow></a:math> invariant mass spectrum produced proton-proton collisions at <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"><c:mrow><c:msqrt><c:mrow><c:mi>s</c:mi></c:mrow></c:msqrt><c:mo>=</c:mo><c:mn>13</c:mn><c:mtext> </c:mtext><c:mtext>...
The first observation of the $t\overline{t}H$ process in a single Higgs boson decay channel with full reconstruction final state ($H\ensuremath{\rightarrow}\ensuremath{\gamma}\ensuremath{\gamma}$) is presented, significance 6.6 standard deviations ($\ensuremath{\sigma}$). $CP$ structure couplings to fermions measured, resulting an exclusion pure $CP$-odd top Yukawa coupling at $3.2\ensuremath{\sigma}$. measurements are based on sample proton-proton collisions center-of-mass energy...
The first evidence for X(3872) production in relativistic heavy ion collisions is reported. studied lead-lead (PbPb) at a center-of-mass energy of $\sqrt{s_\mathrm{NN}} =$ 5.02 TeV per nucleon pair, using the decay chain $\to$ J$/\psi\, \pi^+\pi^- \to$ $\mu^+\mu^-\pi^+\pi^-$. data were recorded with CMS detector 2018 and correspond to an integrated luminosity 1.7 nb$^{-1}$. measurement performed rapidity transverse momentum ranges $|y|$ $\lt$ 1.6 15 $p_\mathrm{T}$ 50 GeV$/c$. significance...
Since the initial data taking of CERN LHC, CMS experiment has undergone substantial upgrades and improvements. This paper discusses detector as it is configured for third data-taking period Run 3, which started in 2022. The entire silicon pixel tracking was replaced. A new powering system superconducting solenoid installed. electronics hadron calorimeter upgraded. All muon electronic systems were upgraded, stations added, including a gas electron multiplier detector. precision proton...
A bstract search is presented for vector-like T and B quark-antiquark pairs produced in proton-proton collisions at a center-of-mass energy of 13 TeV. Data were collected by the CMS experiment CERN LHC 2016–2018, with an integrated luminosity 138 fb − 1 . Events are separated into single-lepton, same-sign charge dilepton, multi-lepton channels. In analysis single-lepton channel multilayer neural network jet identification techniques employed to select signal events, while dilepton...
A search for decays to invisible particles of Higgs bosons produced in association with a top-antitop quark pair or vector boson, which both decay fully hadronic final state, has been performed using proton-proton collision data collected at s=13TeV by the CMS experiment LHC, corresponding an integrated luminosity 138fb-1. The 95% confidence level upper limit set on branching fraction 125GeV boson particles, B(H→inv), is 0.54 (0.39 expected), assuming standard model production cross...
Abstract A test of lepton flavor universality in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mrow> <mml:msup> <mml:mtext>B</mml:mtext> <mml:mo>±</mml:mo> </mml:mrow> </mml:msup> <mml:mo accent="false" stretchy="false">→</mml:mo> <mml:mtext>K</mml:mtext> <mml:mi>μ</mml:mi> <mml:mo>+</mml:mo> <mml:mo>−</mml:mo> </mml:math> and <mml:mtext>e</mml:mtext> decays, as well a measurement differential integrated branching fractions nonresonant decay are presented....
Energy correlators that describe energy-weighted distances between two or three particles in a hadronic jet are measured using an event sample of sqrt[s]=13 TeV proton-proton collisions collected by the CMS experiment and corresponding to integrated luminosity 36.3 fb^{-1}. The distributions consistent with trends simulation reveal key features strong interaction: confinement asymptotic freedom. By comparing ratio three- two-particle energy correlator theoretical calculations resum collinear...
Abstract Since 2019, a collaboration between researchers from various institutes and experiments (i.e., ATLAS, CMS, ALICE, LHCb/SHiP the CERN EP-DT group) has been operating several RPCs with diverse electronics, gas gap thicknesses detector layouts at Gamma Irradiation Facility (GIF++). The studies aim assessing performance of when filled new eco-friendly mixtures in avalanche mode view evaluating possible aging effects after long high background irradiation periods, for example,...
The goal of this report is to give a comprehensive overview the rich field forward physics, with special attention topics that can be studied at LHC.The starts presenting selection Monte Carlo simulation tools currently available, chapter 2, then enters phenomenology QCD low, 3, and high, 4, momentum transfer, while unique scattering conditions central exclusive production are analyzed in 5.The last two experimental topics, Cosmic Ray Heavy Ion physics presented 6 7 respectively.Chapter 8...
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 LHC, using PbPb pp data samples corresponding to integrated luminosities 404 $\mu$b$^{-1}$ 27.4 pb$^{-1}$, respectively. Jets different areas are reconstructed anti-$k_\mathrm{T}$ algorithm by varying distance parameter $R$. The measurements performed jets transverse momenta ($p_\mathrm{T}$) greater than 200 GeV pseudorapidity range...
The observation of the production four top quarks in proton-proton collisions is reported, based on a data sample collected by CMS experiment at center-of-mass energy 13 TeV 2016–2018 CERN LHC and corresponding to an integrated luminosity 138fb−1. Events with two same-sign, three, or charged leptons (electrons muons) additional jets are analyzed. Compared previous results these channels, updated identification techniques for originating from hadronization b quarks, as well revised...
Quasireal photons exchanged in relativistic heavy ion interactions are powerful probes of the gluonic structure nuclei. The coherent J/ψ photoproduction cross section ultraperipheral lead-lead collisions is measured as a function photon-nucleus center-of-mass energies per nucleon (WγNPb) over wide range 40<WγNPb<400 GeV. Results obtained using data at nucleon-nucleon energy 5.02 TeV collected by CMS experiment CERN LHC, corresponding to an integrated luminosity 1.52 nb−1. observed rise...
A search is presented for charged, long-lived supersymmetric particles in final states with one or more disappearing tracks. The based on data from proton-proton collisions at a center-of-mass energy of 13 TeV collected the CMS detector CERN LHC between 2016 and 2018, corresponding to an integrated luminosity <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mn>137</a:mn><a:mtext> </a:mtext><a:mtext>...
A bstract search for heavy neutral leptons (HNLs) of Majorana or Dirac type using proton-proton collision data at $$ \sqrt{s} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> </mml:math> = 13 TeV is presented. The were collected by the CMS experiment CERN LHC and correspond to an integrated luminosity 138 fb − 1 . Events with three charged (electrons, muons, hadronically decaying tau leptons) are selected, corresponding HNL production in...
Abstract Ultrarelativistic nuclear collisions create a strongly interacting state of hot and dense quark–gluon matter that exhibits remarkable collective flow behavior with minimal viscous dissipation. To gain deeper insights into its intrinsic nature fundamental degrees freedom, we determine the speed sound in an extended volume plasma using lead–lead (PbPb) at center-of-mass energy per nucleon pair 5.02 TeV. The data were recorded by CMS experiment CERN LHC correspond to integrated...
A study of excited $\Lambda_\mathrm{b}^0$ baryons is reported, based on a data sample collected in 2016-2018 with the CMS detector at LHC proton-proton collisions center-of-mass energy 13 TeV, corresponding to an integrated luminosity up 140 fb$^{-1}$. The existence four states: $\Lambda_\mathrm{b}$(5912)$^0$, $\Lambda_\mathrm{b}$(5920)$^0$, $\Lambda_\mathrm{b}$(6146)$^0$, and $\Lambda_\mathrm{b}$(6152)$^0$ $\Lambda_\mathrm{b}^0\pi^+\pi^-$ mass spectrum confirmed, their masses are measured....
A bstract Measurements of the fiducial inclusive and differential production cross sections Higgs boson in proton-proton collisions at $$ \sqrt{s} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msqrt><mml:mi>s</mml:mi></mml:msqrt></mml:math> = 13 TeV are performed using events where decays into a pair W bosons that subsequently decay final state with an electron, muon, neutrinos. The analysis is based on data collected CMS detector LHC during 2016–2018, corresponding to...
The second-order Fourier coefficients ($v_2$) characterizing the azimuthal distribution of $\Upsilon$(1S) and $\Upsilon$(2S) mesons arising from PbPb collisions at $\sqrt{s_\mathrm{NN}} =$ 5.02 TeV are studied. $\Upsilon$ reconstructed in their dimuon decay channel, as measured by CMS detector. data set corresponds to an integrated luminosity 1.7 nb$^{-1}$. scalar product method is used extract $v_2$ distribution. Results reported for rapidity range $|y|$ $\lt$ 2.4, with transverse momentum...
Abstract The Precision Proton Spectrometer (PPS) of the CMS and TOTEM experiments collected 107.7 fb -1 in proton-proton (pp) collisions at LHC 13 TeV (Run 2). This paper describes key features PPS alignment optics calibrations, proton reconstruction procedure, as well detector efficiency performance simulation. simulation are validated using a sample (semi)exclusive dilepton events. has proven feasibility continuously operating near-beam spectrometer high luminosity hadron collider.
A measurement of the jet mass distribution in hadronic decays Lorentz-boosted top quarks is presented. The performed lepton + jets channel quark pair production (tt¯) events, where an electron or muon. products decay are reconstructed using a single large-radius with transverse momentum greater than 400GeV. data were collected CMS detector at LHC proton-proton collisions and correspond to integrated luminosity 138fb-1. differential tt¯ cross section as function unfolded particle level used...