A5052568652- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Particle Detector Development and Performance
- Quantum Chromodynamics and Particle Interactions
- Dark Matter and Cosmic Phenomena
- Computational Physics and Python Applications
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Neutrino Physics Research
- Cosmology and Gravitation Theories
- Crystallography and molecular interactions
- Synthesis and characterization of novel inorganic/organometallic compounds
- Organoboron and organosilicon chemistry
- Chemical Synthesis and Analysis
- Antimicrobial Peptides and Activities
- Coordination Chemistry and Organometallics
- Distributed and Parallel Computing Systems
- Medical Imaging Techniques and Applications
- Radiation Detection and Scintillator Technologies
- Advanced Data Storage Technologies
- Astrophysics and Cosmic Phenomena
- Atomic and Subatomic Physics Research
- Intellectual Property and Patents
- Boron Compounds in Chemistry
- Superconducting Materials and Applications
Humboldt-Universität zu Berlin
2004-2025
Tel Aviv University
2025
AGH University of Krakow
2023-2024
Jagiellonian University
2023-2024
A. Alikhanyan National Laboratory
2024
SR Research (Canada)
2024
Federación Española de Enfermedades Raras
2024
Deutsches Elektronen-Synchrotron DESY
2023-2024
Atlas Scientific (United States)
2024
The University of Adelaide
2022-2023
Catch it! Geminal phosphorus/aluminum-based frustrated Lewis pairs (FLPs) are easily obtained by hydroalumination of alkynylphosphines. These FLPs can activate terminal acetylenes two competitive pathways, which were analyzed DFT calculations, and they bind carbon dioxide reversibly. Therefore, alongside polyfluorinated boranes, alanes also ideal acids for FLP chemistry. Detailed facts importance to specialist readers published as "Supporting Information". Such documents peer-reviewed, but...
Abstract The standard model of particle physics 1–4 describes the known fundamental particles and forces that make up our Universe, with exception gravity. One central features is a field permeates all space interacts 5–9 . quantum excitation this field, as Higgs manifests itself boson, only no spin. In 2012, properties consistent boson was observed by ATLAS CMS experiments at Large Hadron Collider CERN 10,11 Since then, more than 30 times many bosons have been recorded experiment, enabling...
The flavour-tagging algorithms developed by the ATLAS Collaboration and used to analyse its dataset of $\sqrt s = 13$ TeV $pp$ collisions from Run 2 Large Hadron Collider are presented. These new tagging based on recurrent deep neural networks, their performance is evaluated in simulated collision events. developments yield considerable improvements over previous jet-flavour identification strategies. At 77% $b$-jet efficiency operating point, light-jet (charm-jet) rejection factors 170 (5)...
Many extensions of the Standard Model predict production dark matter particles at LHC. Sufficiently light may be produced in decays Higgs boson that would appear invisible to detector. This Letter presents a statistical combination searches for H $\rightarrow$ where multiple modes are considered. These performed with ATLAS detector using 139 fb$^{-1}$ proton-proton collisions centre-of-mass energy $\sqrt{s} =13$ TeV In results =7$ and 8 TeV, an upper limit on branching ratio 0.107 (0.077)...
Abstract The need for large-scale production of highly accurate simulated event samples the extensive physics programme ATLAS experiment at Large Hadron Collider motivates development new simulation techniques. Building on recent success deep learning algorithms, variational autoencoders and generative adversarial networks are investigated modelling response central region electromagnetic calorimeter to photons various energies. properties synthesised showers compared with from a full...
Open wide! The geminal P/Al-based frustrated Lewis pair (Mes2P)(tBu2Al)CC(H)Ph forms stable adducts with BH3 and NH3. This compound facilitates the dehydrocoupling of ammonia–borane adduct by unusual NH bond activation elimination dihydrogen at boron center, it is a very active main-group-based FLP catalyst for dehydrogenation amine–borane H3B⋅NMe2H. Mes=mesityl.
Hydroalumination of aryldialkynylphosphines RP(C≡C-(t)Bu)(2) (R = Ph, Mes) with equimolar quantities diethylaluminum hydride afforded mixed alkenyl-alkynyl cyclic dimers in which the dative aluminum-phosphorus bonds are geminal to exocyclic alkenyl groups. Addition triethylaluminum isolated 1 Ph) or situ generated species caused ethynide elimination yield arylethylphosphorus 2 and 3. These possess a chair-like Al(2)C(2)P(2) heterocycle intermolecular Al-P interactions. The boat conformation...
Schnapp, schnapp! Frustrierte Lewis-Paare (FLPs) mit geminalen Phosphor- und Aluminiumfunktionen sind durch die Hydroaluminierung von Alkinylphosphanen leicht zugänglich. Solche FLPs können terminale Acetylene auf zweierlei Wegen aktivieren, mithilfe DFT-Rechnungen analysiert wurden. Außerdem sie in der Lage, Kohlendioxid reversibel zu binden. Somit bieten sich Alane dem Gebiet neben polyfluorierten Boranen als alternative Lewis-Säuren an. Detailed facts of importance to specialist readers...
The cyclic depsipeptide skyllamycin A is a potent inhibitor of the platelet-derived growth factor (PDGF) signaling pathway by inhibiting binding homodimeric PDGF BB to β-receptor. Its structure contains cinnamoyl side chain and shows high amount β-hydroxylated amino acids as well an unusual α-hydroxyglycine moiety rare structural modification. biosynthetic gene cluster was cloned sequenced from Streptomyces sp. Acta 2897. analysis revealed presence open reading frames encoding proteins for...
A bstract direct search for Higgs bosons produced via vector-boson fusion and subsequently decaying into invisible particles is reported. The analysis uses 139 fb − 1 of pp collision data at a centre-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 by the ATLAS detector LHC. observed numbers events are found to be in agreement with background expectation from Standard Model...
A search for the Higgs boson decaying into a pair of charm quarks is presented. The analysis uses proton-proton collisions to target production in association with leptonically $W$ or $Z$ boson. dataset delivered by LHC at centre-of-mass energy $\sqrt{s}=13$ TeV and recorded ATLAS detector corresponds an integrated luminosity 139 fb$^{-1}$. Flavour-tagging algorithms are used identify jets originating from hadronisation quarks. method validated simultaneous measurement $WW,WZ$ $ZZ$...
Constraints on the Higgs boson self-coupling are set by combining double-Higgs analyses in bb¯bb¯, bb¯τ+τ− and bb¯γγ decay channels with single-Higgs targeting γγ, ZZ⁎, WW⁎, τ+τ− bb¯ channels. The data used these were recorded ATLAS detector at LHC proton–proton collisions s=13 TeV correspond to an integrated luminosity of 126–139 fb−1. combination sets upper limit μHH<2.4 95% confidence level production cross-section normalised its Standard Model prediction. Combining analyses, assumption...
A search for the electroweak production of pairs charged sleptons or charginos decaying into two-lepton final states with missing transverse momentum is presented. Two simplified models $R$-parity-conserving supersymmetry are considered: direct pair-production ($\tilde{\ell}\tilde{\ell}$), each a lepton and $\tilde{\chi}_1^0$ neutralino, lightest $(\tilde{\chi}_1^\pm\tilde{\chi}_1^\mp)$, $W$-boson $\tilde{\chi}_1^0$. The neutralino ($\tilde{\chi}_1^0$) assumed to be supersymmetric particle...
The identification of $b$-jets, referred to as $b$-tagging, is an important part many physics analyses in the ATLAS experiment at Large Hadron Collider and accurate calibration its performance essential for high-quality results. This publication describes light-flavour jet mistagging efficiency a data sample proton-proton collision events $\sqrt{s}=13$ TeV corresponding integrated luminosity 139 fb$^{-1}$. performed $Z$ bosons produced association with jets. Due low jets, method which uses...
A search for nonresonant Higgs boson pair production in the $b\overline{b}b\overline{b}$ final state is presented. The analysis uses $126\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ of $pp$ collision data at $\sqrt{s}=13\text{ }\mathrm{TeV}$ collected with ATLAS detector Large Hadron Collider, and targets both gluon-gluon fusion vector-boson modes. No evidence signal found observed (expected) upper limit on cross section determined to be 5.4 (8.1) times Standard Model predicted 95%...
In a special run of the LHC with $\beta^\star = 2.5~$km, proton-proton elastic-scattering events were recorded at $\sqrt{s} 13~$TeV an integrated luminosity $340~\mu \textrm{b}^{-1}$ using ALFA subdetector ATLAS in 2016. The elastic cross section was measured differentially Mandelstam $t$ variable range from $-t 2.5 \cdot 10^{-4}~$GeV$^{2}$ to 0.46~$GeV$^{2}$ 6.9 million candidates. This paper presents measurements total $\sigma_{\textrm{tot}}$, parameters nuclear slope, and $\rho$-parameter...
Differential and double-differential distributions of kinematic variables leptons from decays top-quark pairs ($t\bar{t}$) are measured using the full LHC Run 2 data sample collected with ATLAS detector. The were at a $pp$ collision energy $\sqrt{s}=13$ TeV correspond to an integrated luminosity 140 fb$^{-1}$. measurements use events containing oppositely charged $e\mu$ pair $b$-tagged jets. results compared predictions several Monte Carlo generators. While no prediction is found be...
A search for a long-lived, heavy neutral lepton (N) in 139 fb^{-1} of sqrt[s]=13 TeV pp collision data collected by the ATLAS detector at Large Hadron Collider is reported. The N produced via W→Nμ or W→Ne and decays into two charged leptons neutrino, forming displaced vertex. mass used to discriminate between signal background. No observed, limits are set on squared mixing parameters with left-handed neutrino states range 3 GeV<m_{N}<15 GeV. For first time, given both single-flavor...
Abstract A search for pair production of doubly charged Higgs bosons ( $$H^{\pm \pm }$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mi>H</mml:mi> <mml:mrow> <mml:mo>±</mml:mo> </mml:mrow> </mml:msup> </mml:math> ), each decaying into a prompt, isolated, and highly energetic leptons with the same electric charge, is presented. The uses proton–proton collision data sample at centre-of-mass energy 13 TeV corresponding to an integrated luminosity 139 fb $$^{-1}$$...
Abstract This paper presents the muon momentum calibration and performance studies for ATLAS detector based on pp collisions data sample produced at $$\sqrt{s}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> </mml:math> = 13 TeV LHC during Run 2 corresponding to an integrated luminosity of 139 $${\textrm{fb}}^{-1}$$ <mml:msup> <mml:mrow> <mml:mtext>fb</mml:mtext> </mml:mrow> <mml:mo>-</mml:mo> <mml:mn>1</mml:mn> </mml:msup> . An...
Helpful frustration: The geminal phosphorus/aluminum-based frustrated Lewis pair (Mes2P)(tBu2Al)CC(H)Ph (Mes=2,4,6-Me3C6H2) forms stable adducts with alkali metal hydrides (LiH, NaH, KH). These molecular hydride complexes display enhanced reactivity, which was demonstrated by the catalytic transformation of chlorotriphenylsilane to corresponding through a frontside SN2-f@Si pathway. Detailed facts importance specialist readers are published as "Supporting Information". Such documents...
Upon coordination of Mes<sub>2</sub>PC(CHPh)Al<italic>t</italic>Bu<sub>2</sub>, bridging P→M–Cl→Al was observed with Rh and Pd fragments, while chloride abstraction occurred Au. The resulting zwitterionic complexes have been fully characterized analyzed by DFT calculations.
Weiiit aufmachen …︁: Das geminale P/Al-basierte frustrierte Lewis-Paar (Mes2P)(tBu2Al)CC(H)Ph (Mes=Mesityl) bildet beständige Addukte mit BH3 und NH3, begünstigt die Dehydrokupplung eines Ammoniak-Boran-Addukts über eine ungewöhnliche N-H-Bindungsaktivierung zeigt sich als sehr aktiver Hauptgruppenelement-Katalysator bei der Dehydrierung des Dialkylaminborans H3B⋅NMe2H.
The methylene-bridged phosphinoalane tBu2PCH2AlMe2 exists as a stable, dimeric Lewis adduct, which reacts with carbon dioxide and tert-butyl isocyanate at room temperature, forming five-membered heterocycles; we explored the reaction pathways of these heterocycles computational chemistry. A carboxylate dimer results when excess is used. novel mechanism presented for this process that presumes cooperative effect two CO2 molecules in FLP captured expelled on insertion second molecule into Al–C...
Aluminum–phosphorus-based frustrated Lewis pairs (Al/P FLPs) are valuable reagents for the dipolar activation or coordination of small molecules ionic compounds. They accessible by hydroalumination alkynylphosphines. However, as reported in this article, application simple method synthesis a broad variety different compounds is limited to sterically shielded systems. Hydroalumination Mes2PC≡CPh with dialkyl- diarylaluminum hydrides HAlR2 (R = Me, iBu, Ph) afforded unique adducts which an...