A5104144455- 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
- Computational Physics and Python Applications
- Cosmology and Gravitation Theories
- Neutrino Physics Research
- Astrophysics and Cosmic Phenomena
- Black Holes and Theoretical Physics
- Atomic and Subatomic Physics Research
- Radiation Detection and Scintillator Technologies
- Distributed and Parallel Computing Systems
- Particle Accelerators and Free-Electron Lasers
- Stochastic processes and financial applications
- Nuclear Physics and Applications
- Noncommutative and Quantum Gravity Theories
- Big Data Technologies and Applications
- CCD and CMOS Imaging Sensors
- Medical Imaging Techniques and Applications
- Optical properties and cooling technologies in crystalline materials
- Scientific Computing and Data Management
- Quantum, superfluid, helium dynamics
- Radiation Therapy and Dosimetry
- Parallel Computing and Optimization Techniques
UCLouvain
2021-2025
University of Science and Technology of China
2024-2025
Institute of High Energy Physics
2022-2024
University of Antwerp
2024
A. Alikhanyan National Laboratory
2022-2024
Centro Brasileiro de Pesquisas Físicas
2023
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.
A bstract Three searches are presented for signatures of physics beyond the standard model (SM) in ττ final states proton-proton collisions at LHC, using a data sample collected with CMS detector $$ \sqrt{s} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> </mml:math> = 13 TeV, corresponding to an integrated luminosity 138 fb − 1 . Upper limits 95% confidence level (CL) set on products branching fraction decay into τ leptons and cross...
Abstract Since the initial data taking of CERN LHC, CMS experiment has undergone substantial upgrades and improvements. This paper discusses detector as it is configured for third data-taking period Run 3, which started in 2022. The entire silicon pixel tracking was replaced. A new powering system superconducting solenoid installed. electronics hadron calorimeter upgraded. All muon electronic systems were upgraded, stations added, including a gas electron multiplier detector. precision...
A search is reported for near-threshold structures in the <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mi>J</a:mi><a:mo>/</a:mo><a:mi>ψ</a:mi><a:mi>J</a:mi><a:mo>/</a:mo><a:mi>ψ</a:mi></a:mrow></a:math> invariant mass spectrum produced proton-proton collisions at <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"><c:mrow><c:msqrt><c:mrow><c:mi>s</c:mi></c:mrow></c:msqrt><c:mo>=</c:mo><c:mn>13</c:mn><c:mtext> </c:mtext><c:mtext>...
A bstract Measurements of Higgs boson production cross sections and couplings in events where the decays into a pair photons are reported. Events selected from sample proton-proton collisions at $$ \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 collected by CMS detector LHC 2016 to 2018, corresponding an integrated luminosity 137 fb − 1 . Analysis categories enriched produced via gluon fusion, vector...
A search is presented for new particles produced at the LHC in proton-proton collisions $\sqrt{s} =$ 13 TeV, using events with energetic jets and large missing transverse momentum. The analysis based on a data sample corresponding to an integrated luminosity of 101 fb$^{-1}$, collected 2017-2018 CMS detector. Machine learning techniques are used define separate categories narrow from initial-state radiation large-radius consistent hadronic decay W or Z boson. statistical combination made...
Since the discovery of Higgs boson in 2012, detailed studies its properties have been ongoing. Besides mass, width - related to lifetime is an important parameter. One way determine this quantity by measuring off-shell production, where mass far away from nominal value, and relating it on-shell close value. Here, we report evidence for such contributions production cross section two Z bosons with data CMS experiment at CERN Large Hadron Collider. We constrain total rate contribution beyond...
A bstract search for heavy neutral leptons (HNLs), the right-handed Dirac or Majorana neutrinos, is performed in final states with three charged (electrons muons) using proton-proton collision data collected by CMS experiment 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 CERN LHC. The correspond to an integrated luminosity of 138 fb − 1 . HNLs could be produced through mixing standard model neutrinos...
This Letter presents a search for direct production of charginos and neutralinos via electroweak interactions. The results are based on data from proton-proton collisions at center-of-mass energy 13 TeV collected with the CMS detector LHC, corresponding to an integrated luminosity 137 fb$^{-1}$. considers final states large missing transverse momentum pairs hadronically decaying bosons WW, WZ, WH, where H is Higgs boson. These identified using novel algorithms. No significant excess events...
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...
A bstract Results are presented from a search for the Higgs boson decay H → Zγ, where Z ℓ + − with = e or μ. The is performed using sample of proton-proton (pp) collision data at center-of-mass energy 13 TeV, recorded by CMS experiment LHC, corresponding to an integrated luminosity 138 fb 1 . Events assigned mutually exclusive categories, which exploit differences in both event topology and kinematics distinct production mechanisms enhance signal sensitivity. strength μ , defined as product...
Decays of $Z$ bosons to charm quark-antiquark pairs have been observed for the first time at a hadron collider, as part search decays Higgs pairs, which are bounded 14 times standard model value.
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...
The $\Xi^-_\mathrm{b} \pi^+ \pi^-$ invariant mass spectrum is investigated with an event sample of proton-proton collisions at $\sqrt{s} = $ 13 TeV, collected by the CMS experiment LHC in 2016-2018 and corresponding to integrated luminosity 140 fb$^{-1}$. ground state $\Xi^-_\mathrm{b}$ reconstructed via its decays J$/\psi$ $\Xi^-$ $\Lambda$ K$^-$. A narrow resonance, labeled $\Xi_\mathrm{b}$(6100)$^-$, observed a 6100.3 $\pm$ 0.2 (stat) 0.1 (syst) 0.6 ($\Xi^-_\mathrm{b}$) MeV, where last...
Studies of $CP$ violation and anomalous couplings the Higgs boson to vector bosons fermions are presented. The data were acquired by CMS experiment at LHC correspond an integrated luminosity $137\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ a proton-proton collision energy 13 TeV. kinematic effects in boson's four-lepton decay $H\ensuremath{\rightarrow}4\ensuremath{\ell}$ its production association with two jets, boson, or top quarks analyzed, using full detector simulation matrix element...
A direct search for electroweak production of charginos and neutralinos is presented. Events with three or four leptons, up to two hadronically decaying $τ$ same-sign light leptons are analyzed. The data sample consists 137 fb$^{-1}$ proton-proton collisions a center mass energy 13 TeV, recorded the CMS detector at LHC. results interpreted in terms several simplified models. These represent broad range decay scenarios neutralinos. parametric neural network used target models large...
A bstract The first collider search for dark matter arising from a strongly coupled hidden sector is presented and uses data sample corresponding to 138 fb −1 , collected with the CMS detector at CERN LHC, $$ \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. hypothesized couple standard model (SM) via heavy leptophobic Z′ mediator produced as resonance in proton-proton collisions. decay results two...
A bstract measurement of the inclusive jet production in proton-proton collisions at LHC $$ \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 double-differential cross sections are measured as a function transverse momentum p T and absolute rapidity |y| . anti- k clustering algorithm used with distance parameter 0.4 (0.7) phase space region from 97 GeV up to 3.1 < 2 0. Data collected CMS...
The first measurement of the CP structure Yukawa coupling between Higgs boson and $\tau$ leptons is presented. based on data collected in proton-proton collisions at $\sqrt{s} =$ 13 TeV by CMS detector LHC, corresponding to an integrated luminosity 137 fb$^{-1}$. analysis uses angular correlation decay planes produced decays. effective mixing angle CP-even CP-odd couplings found be $-$1 $\pm$ 19$^\circ$, compared expected value 0 21$^\circ$ 68.3% confidence level. disfavour pure scenario 3.0...
Results are presented from a search for physics beyond the standard model in proton-proton collisions at $\sqrt{s} =$ 13 TeV channels with two Higgs bosons, each decaying via process H $\to$ $\mathrm{b\bar{b}}$, and large missing transverse momentum. The uses data sample corresponding to an integrated luminosity of 137 fb$^{-1}$ collected by CMS experiment CERN LHC. is motivated models supersymmetry that predict production neutralinos, neutral partners electroweak gauge bosons. observed...
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...