P. Paulitsch
A5060173848- 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
- Radiation Detection and Scintillator Technologies
- Radiation Therapy and Dosimetry
- Astrophysics and Cosmic Phenomena
- Particle Accelerators and Free-Electron Lasers
- Nuclear Physics and Applications
- Historical and Archaeological Studies
- Stochastic processes and financial applications
- Organometallic Compounds Synthesis and Characterization
- X-ray Diffraction in Crystallography
- Grouting, Rheology, and Soil Mechanics
- Geological and Geochemical Analysis
- Physics and Engineering Research Articles
- Mineralogy and Gemology Studies
- Cultural Heritage Materials Analysis
- Black Holes and Theoretical Physics
- Engineering and Materials Science Studies
- Recycling and utilization of industrial and municipal waste in materials production
Institute of High Energy Physics
2019-2024
A. Alikhanyan National Laboratory
2022-2023
Austrian Academy of Sciences
2019-2020
Darmstadt University of Applied Sciences
1963-1992
Technical University of Darmstadt
1972-1974
University of Graz
1948-1962
Technische Universität Berlin
1959
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...
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 $$ \sqrt{s} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> </mml:math> = 13 TeV, corresponding to an integrated luminosity 138 fb − 1 . Upper limits 95% confidence level (CL) set on products branching fraction decay into τ leptons and cross...
A bstract Measurements of Higgs boson production cross sections and couplings in events where the decays into a pair photons are reported. Events selected from sample proton-proton collisions at $$ \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 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 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 $$ \sqrt{s} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> </mml:math> = 13 TeV CERN LHC. The correspond to an integrated luminosity of 138 fb − 1 . HNLs could be produced through mixing standard model neutrinos...
A bstract search is presented for vector-like T and B quark-antiquark pairs produced in proton-proton collisions at a center-of-mass energy of 13 TeV. Data were collected by the CMS experiment CERN LHC 2016–2018, with an integrated luminosity 138 fb − 1 . Events are separated into single-lepton, same-sign charge dilepton, multi-lepton channels. In analysis single-lepton channel multilayer neural network jet identification techniques employed to select signal events, while dilepton...
A search for decays to invisible particles of Higgs bosons produced in association with a top-antitop quark pair or vector boson, which both decay fully hadronic final state, has been performed using proton-proton collision data collected at s=13TeV by the CMS experiment LHC, corresponding an integrated luminosity 138fb-1. The 95% confidence level upper limit set on branching fraction 125GeV boson particles, B(H→inv), is 0.54 (0.39 expected), assuming standard model production cross...
Decays of $Z$ bosons to charm quark-antiquark pairs have been observed for the first time at a hadron collider, as part search decays Higgs pairs, which are bounded 14 times standard model value.
A bstract The first collider search for dark matter arising from a strongly coupled hidden sector is presented and uses data sample corresponding to 138 fb −1 , collected with the CMS detector at CERN LHC, $$ \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 $$ \sqrt{s} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msqrt><mml:mi>s</mml:mi></mml:msqrt></mml:math> = 13 TeV is presented. The double-differential cross sections are measured as a function transverse momentum p T and absolute rapidity |y| . anti- k clustering algorithm used with distance parameter 0.4 (0.7) phase space region from 97 GeV up to 3.1 < 2 0. Data collected CMS...
Abstract Measurements of Higgs boson production, where the decays into a pair $$\uptau $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>τ</mml:mi> </mml:math> leptons, are presented, using sample proton-proton collisions collected with CMS experiment at center-of-mass energy "Equation missing"<!-- image only, no MathML or LaTex -->, corresponding to an integrated luminosity 138 $$\,\text {fb}^{-1}$$ <mml:mrow> <mml:mspace /> <mml:msup> <mml:mtext>fb</mml:mtext>...
A search for the direct production of a pair $\ensuremath{\tau}$ sleptons, supersymmetric partners leptons, is presented. Each slepton assumed to decay lepton and lightest particle (LSP), which be stable not interact in detector, leading an imbalance total reconstructed transverse momentum. The carried out events identified as containing two each decaying one or more hadrons neutrino, significant momentum imbalance. In addition scenarios sleptons promptly, also addresses have sufficiently...
Abstract A combination of searches for top squark pair production using proton–proton collision data at a center-of-mass energy 13 $$\,\text {Te}\text {V}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mspace/> <mml:mtext>Te</mml:mtext> </mml:mrow> </mml:math> the CERN LHC, corresponding to an integrated luminosity 137 {fb}^{-1}$$ <mml:msup> <mml:mtext>fb</mml:mtext> <mml:mo>-</mml:mo> <mml:mn>1</mml:mn> </mml:msup> collected by CMS experiment, is presented....
An inclusive search for nonresonant signatures of beyond the standard model (SM) phenomena in events with three or more charged leptons, including hadronically decaying $\ensuremath{\tau}$ is presented. The analysis based on a data sample corresponding to an integrated luminosity $138\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ proton-proton collisions at $\sqrt{s}=13\text{ }\mathrm{TeV}$, collected by CMS experiment LHC 2016--2018. Events are categorized lepton and $b$-tagged jet...
A search for the nonresonant production of Higgs boson pairs (HH) via gluon-gluon and vector fusion processes in final states with two bottom quarks tau leptons is presented. The uses data from proton-proton collisions at a center-of-mass energy $\sqrt{s}$ = 13 TeV recorded CMS detector LHC, corresponding to an integrated luminosity 138 fb$^{-1}$. Events which least one lepton decays hadronically are considered multiple machine learning techniques used identify extract signal. found be...
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...
The results of a search for Higgs boson pair (HH) production in the WW*WW*, WW*$\tau\tau$, and $\tau\tau\tau\tau$ decay modes are presented. uses 138 fb$^{-1}$ proton-proton collision data recorded by CMS experiment at LHC center-of-mass energy 13 TeV from 2016 to 2018. Analyzed events contain two, three, or four reconstructed leptons, including electrons, muons, hadronically decaying tau leptons. No evidence signal is found data. Upper limits set on cross section nonresonant HH production,...
A search for nonresonant Higgs boson ($H$) pair production via gluon and vector ($V$) fusion is performed in the four-bottom-quark final state, using proton-proton collision data at 13 TeV corresponding to $138\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ collected by CMS experiment LHC. The analysis targets Lorentz-boosted $H$ pairs identified a graph neural network. It constrains strengths relative standard model of self-coupling quartic $VVHH$ couplings, ${\ensuremath{\kappa}}_{2V}$,...
The azimuthal anisotropy of mesons in high-multiplicity proton-lead collisions is studied using data collected by the CMS experiment at a nucleon-nucleon center-of-mass energy 8.16 TeV. are reconstructed their dimuon decay channel. characterized second Fourier harmonic coefficients, found two-particle correlation technique, which correlated with charged hadrons. A large pseudorapidity gap used to suppress short-range correlations. Nonflow contamination from dijet background removed...
Two-particle Bose–Einstein momentum correlation functions are studied for charged-hadron pairs in lead-lead collisions at a center-of-mass energy per nucleon pair of <a:math xmlns:a="http://www.w3.org/1998/Math/MathML"><a:mrow><a:msqrt><a:msub><a:mi>s</a:mi><a:mi>NN</a:mi></a:msub></a:msqrt><a:mo>=</a:mo><a:mn>5.02</a:mn><a:mspace width="4pt"/><a:mi>TeV</a:mi></a:mrow></a:math>. The data sample, containing <c:math...
Differential cross sections for top quark pair ($\mathrm{t\bar{t}}$) production are measured in proton-proton collisions at a center-of-mass energy of 13 TeV using sample events containing two oppositely charged leptons. The data were recorded with the CMS detector CERN LHC and correspond to an integrated luminosity 138 fb$^{-1}$. differential as functions kinematic observables $\mathrm{t\bar{t}}$ system, antiquark their decay products, well number additional jets event. results presented up...
A bstract Measurements of jet substructure describing the composition quark- and gluon-initiated jets are presented. Proton-proton (pp) 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 collected with CMS detector used, corresponding to an integrated luminosity 35.9 fb − 1 . Generalized angularities measured that characterize distinguish jets. These observables sensitive distributions...