A5108023324- 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
- Neutrino Physics Research
- Computational Physics and Python Applications
- Radiation Detection and Scintillator Technologies
- Black Holes and Theoretical Physics
- Astrophysics and Cosmic Phenomena
- Radiation Effects in Electronics
- Customer Service Quality and Loyalty
- Gamma-ray bursts and supernovae
- Advanced Data Storage Technologies
- Fatigue and fracture mechanics
- Nuclear physics research studies
- Reliability and Maintenance Optimization
- Probabilistic and Robust Engineering Design
- Customer churn and segmentation
- Nuclear reactor physics and engineering
- advanced mathematical theories
- Radiation Therapy and Dosimetry
- Cold Atom Physics and Bose-Einstein Condensates
- Particle Accelerators and Free-Electron Lasers
UCLouvain
2020-2025
St Xavier’s College
2024
St. Xavier's College (Autonomous)
2024
Tata Motors (India)
2024
Saha Institute of Nuclear Physics
2015-2023
Institute of High Energy Physics
2016-2022
Abstract The performance is presented of the reconstruction and identification algorithms for electrons photons with CMS experiment at LHC. reported results are based on proton-proton collision data collected a center-of-mass energy 13 TeV recorded in 2016–2018, corresponding to an integrated luminosity 136 fb^-1. Results obtained from lead-lead √(s NN )=5.02 also presented. Innovative techniques used reconstruct electron photon signals detector optimize resolution. Events final state...
Evidence for Higgs boson decay to a pair of muons is presented. This result combines searches in four exclusive categories targeting the production via gluon fusion, vector association with boson, and top quark-antiquark pair. The analysis performed using proton-proton collision data at $\sqrt{s} =$ 13 TeV, corresponding an integrated luminosity 137 fb$^{-1}$, recorded by CMS experiment CERN LHC. An excess events over background expectation observed significance 3.0 standard deviations,...
A bstract search is presented for physics beyond the standard model (SM) using electron or muon pairs with high invariant mass. data set of proton-proton collisions collected by CMS experiment at LHC $$ \sqrt{s} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msqrt><mml:mi>s</mml:mi></mml:msqrt></mml:math> = 13 TeV from 2016 to 2018 corresponding a total integrated luminosity up 140 fb − 1 analyzed. No significant deviation observed respect SM background expectations. Upper...
A bstract search for phenomena beyond the standard model in final states with two oppositely charged same-flavor leptons and missing transverse momentum is presented. The uses a data sample of proton-proton collisions at $$ \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, corresponding to an integrated luminosity 137 fb − 1 , collected by CMS experiment LHC. Three potential signatures physics are explored: excess...
Measurements of production cross sections WZ and same-sign WW boson pairs in association with two jets proton-proton collisions at s=13TeV the LHC are reported. The data sample corresponds to an integrated luminosity 137fb−1, collected CMS detector during 2016–2018. measurements performed leptonic decay modes , where ℓ,ℓ′=e, . Differential fiducial as functions invariant masses jet charged lepton pairs, well leading-lepton transverse momentum, measured for W±W± consistent standard model...
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 $$ \sqrt{s} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> </mml:math> = 13 TeV collected by CMS detector LHC 2016 to 2018, corresponding an integrated luminosity 137 fb − 1 . Analysis categories enriched produced via gluon fusion, vector...
A search is presented for new particles produced at the LHC in proton-proton collisions $\sqrt{s} =$ 13 TeV, using events with energetic jets and large missing transverse momentum. The analysis based on a data sample corresponding to an integrated luminosity of 101 fb$^{-1}$, collected 2017-2018 CMS detector. Machine learning techniques are used define separate categories narrow from initial-state radiation large-radius consistent hadronic decay W or Z boson. statistical combination made...
Abstract Production cross sections of the Higgs boson are measured in $${\mathrm{H}} \rightarrow {\mathrm{Z}} 4\ell $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>H</mml:mi> <mml:mo>→</mml:mo> <mml:mi>Z</mml:mi> <mml:mn>4</mml:mn> <mml:mi>ℓ</mml:mi> </mml:mrow> </mml:math> ( $$\ell ={\mathrm{e}},{{{\upmu }}_{\mathrm{}}^{\mathrm{}}} <mml:mo>=</mml:mo> <mml:mi>e</mml:mi> <mml:mo>,</mml:mo> <mml:msubsup> <mml:mi>μ</mml:mi> <mml:mrow/> </mml:msubsup> ) decay...
A bstract search for nonresonant production of Higgs boson pairs via gluon-gluon and vector fusion processes in final states with two bottom quarks photons is presented. The uses data from proton-proton collisions at a center-of-mass energy $$ \sqrt{s} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> </mml:math> = 13 TeV recorded the CMS detector LHC, corresponding to an integrated luminosity 137 fb − 1 . No significant deviation...
Abstract A new algorithm is presented to discriminate reconstructed hadronic decays of tau leptons ( τ h ) that originate from genuine in the CMS detector against candidates quark or gluon jets, electrons, muons. The inputs information all particles vicinity a candidate and employs deep neural network with convolutional layers efficiently process inputs. This leads significantly improved performance compared previously used one. For example, efficiency for pass discriminator jets increases...
Since the discovery of Higgs boson in 2012, detailed studies its properties have been ongoing. Besides mass, width - related to lifetime is an important parameter. One way determine this quantity by measuring off-shell production, where mass far away from nominal value, and relating it on-shell close value. Here, we report evidence for such contributions production cross section two Z bosons with data CMS experiment at CERN Large Hadron Collider. We constrain total rate contribution beyond...
A search for supersymmetry in events with two or three low-momentum leptons and missing transverse momentum is performed. The uses proton-proton collisions at $\sqrt{s} =$ 13 TeV collected the three-year period 2016-2018 by CMS experiment LHC corresponding to an integrated luminosity of up 137 fb$^{-1}$. data are found be agreement expectations from standard model processes. results interpreted terms electroweakino top squark pair production a small mass difference between produced...
A bstract search for heavy neutral leptons (HNLs), the right-handed Dirac or Majorana neutrinos, is performed in final states with three charged (electrons muons) using proton-proton collision data collected by CMS experiment at $$ \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...
A search for dark matter particles is performed using events with a Z boson candidate and large missing transverse momentum. The analysis based on proton-proton collision data at center-of-mass energy of 13 TeV, collected by the CMS experiment LHC in 2016-2018, corresponding to an integrated luminosity 137 fb$^{-1}$. uses decay channels $\to$ ee $\mu\mu$. No significant excess observed over background expected from standard model. Limits are set particle production context simplified models...
Abstract A search is presented for supersymmetric partners of the top quark (top squarks) in final states with two oppositely charged leptons (electrons or muons), jets identified as originating from $${\text {b}}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mtext>b</mml:mtext> </mml:math> quarks, and missing transverse momentum. The uses data proton-proton collisions at $$\sqrt{s}=13\,\text {TeV} $$ <mml:mrow> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt>...
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...
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...
Evidence is presented for the electroweak (EW) production of two jets (jj) in association with Z bosons and constraints on anomalous quartic gauge couplings are set. The analysis based a data sample proton-proton collisions at s=13TeV collected CMS detector 2016–2018, corresponding to an integrated luminosity 137fb−1. search performed fully leptonic final state ZZ→ℓℓℓ′ℓ′, where ℓ,ℓ′=e,μ. EW measured observed (expected) significance 4.0 (3.5) standard deviations. cross sections three fiducial...
Measurements of differential and double-differential cross sections top quark pair ($\text{t}\overline{\text{t}}$) production are presented in the lepton+jets channels with a single electron or muon jets final state. The analysis combines for first time signatures quarks low transverse momentum $p_\text{T}$, where decay products can be identified as separated isolated leptons, high collimated overlap. measurements based on proton-proton collision data at $\sqrt{s} = $ 13 TeV collected by CMS...
A bstract search is presented for a right-handed W boson (W R ) and heavy neutrino (N), in final state consisting of two same-flavor leptons (ee or μμ) quarks. The performed with the CMS experiment at CERN LHC using data sample proton-proton collisions center-of-mass energy 13 TeV corresponding to an integrated luminosity 138 fb − 1 . covers regions phase space, one where decay products are merged into single large-area jet, well separated. expected signal characterized by excess invariant...
The spectra measurements of charged hadrons produced in the shower a parton originating same hard scattering with leptonically decaying Z boson, are reported lead-lead (PbPb) and proton-proton (pp) collisions at nucleon-nucleon center-of-mass energy 5.02 TeV. Both PbPb pp data sets recorded by CMS experiment LHC, correspond to an integrated luminosity 1.7 nb$^{-1}$ 320 pb$^{-1}$, respectively. Hadronic collision one reconstructed boson candidate transverse momentum $p_\mathrm{T}$ $\gt$ 30...
The muon trigger system of the CMS experiment uses a combination hardware and software to identify events containing muon. During Run 2 (covering 2015-2018) LHC achieved instantaneous luminosities as high $\times$ 10$^{34}$cm$^{-2}$s$^{-1}$ while delivering proton-proton collisions at $\sqrt{s} =$ 13 TeV. challenge for is reduce registered event rate from about 40 MHz 1 kHz. Significant improvements important success physics program have been made via improved reconstruction identification...
Abstract This paper presents new sets of parameters (“tunes”) for the underlying-event model $${\textsc {herwig}} \,7$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mstyle> <mml:mi>H</mml:mi> <mml:mi>E</mml:mi> <mml:mi>R</mml:mi> <mml:mi>W</mml:mi> <mml:mi>I</mml:mi> <mml:mi>G</mml:mi> </mml:mstyle> <mml:mspace /> <mml:mn>7</mml:mn> </mml:mrow> </mml:math> event generator. These control description multiple-parton interactions (MPI) and colour reconnection in ,...
A search for low-mass dilepton resonances in Higgs boson decays is conducted the four-lepton final state. The decay assumed to proceed via a pair of beyond standard model particles, or one such particle and Z boson. uses proton-proton collision data collected with CMS detector at CERN LHC, corresponding an integrated luminosity 137 fb$^{-1}$, center-of-mass energy $\sqrt{s} =$ 13 TeV. No significant deviation from expectation observed. Upper limits 95% confidence level are set on...