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 the Large Hadron Collider is reported. The N is produced via W→Nμ or W→Ne and decays into two charged leptons and a neutrino, forming a displaced vertex. The N mass is used to discriminate between signal and background. No signal is observed, and limits are set on the squared mixing parameters of the N with the left-handed neutrino states for the N mass range 3 GeV
Download full-text PDF
Source
http://dx.doi.org/10.1103/PhysRevLett.131.061803 DOI Listing Publication Analysis
Top Keywords
Similar Publications
Diverse reactivity of a cationic N-heterocyclic phosphenium complex towards anionic substrates - substitution reduction.
Dalton Trans
January 2025
Institut für Anorganische Chemie, University of Stuttgart, Pfaffenwaldring 55, 70550 Stuttgart, Germany.
Article Synopsis
- A cationic N-heterocyclic phosphenium iron tetracarbonyl complex was synthesized and its reactivity with various anionic reactants was investigated, resulting in different products depending on the anion involved.
- Reactions with fluoride and chloride produced neutral diazaphospholenes, while bromide and iodide led to NHP iron halides through metal addition and decarbonylation.
- At room temperature, the cationic complex primarily reduced to form a detectable Fe-centered radical, whereas at -78 °C, CH-metalation was favored, further evidenced by the characterization of a neutral borane-adduct.
- The complex’s reactivity variations are attributed to its higher electrophilicity compared to neutral complexes
Transformation mechanism, kinetics and ecotoxicity of kaempferol and quercetin in the gaseous and aqueous phases: A theoretical combined experimental study.
Sci Total Environ
January 2025
Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang 110034, China; State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Chang Ping, Beijing 102249, China.
The transformation and risk assessment of flavonoids triggered by free radicals deserve extensive attention. In this work, the degradation mechanisms, kinetics, and ecotoxicity of kaempferol and quercetin mediated by ∙OH, ∙OCH, ∙OOH, and O in gaseous and aqueous environments were investigated using cell experiments and quantum chemical calculations. Three radical scavenging mechanisms, including hydrogen atom transfer (HAT), radical adduct formation (RAF) and single electron transfer (SET) were discussed.
View Article and Find Full Text PDFWastewater treatment using Moringa oleifera (Lam.) and Eichhornia crassipes (Mart.) as neutral-carbon options within the framework of COP 27 recommendations.
Environ Sci Pollut Res Int
December 2024
Pharmacognosy Department, Faculty of Pharmacy, Misr International University, Cairo, Egypt.
Contamination of water by heavy toxic metal ions such as (e.g., Cr, Mn, Ni, Cu, Zn, As Pb, Cd, and Ag) can lead to serious environmental and human health problems because of their acute and chronic toxicity to the biological system.
View Article and Find Full Text PDFNanomaterials effectively alleviate cadmium hazards in soil-plant systems: A meta-analysis.
Sci Total Environ
December 2024
School of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, China; School of Environmental Science and Engineering, College of Engineering, Southern University of Science and Technology, Shenzhen 518055, China. Electronic address:
Soil cadmium (Cd) contamination is a non-negligible global environmental issue as it may threaten food security and human health through soil-plant interactions. Nanomaterials have a great potential to decrease Cd bioavailability and bioaccumulation, even though the effects have been inconsistent among various studies. Here we compiled data from 137 experiments on the remediation of Cd-contaminated soils by nanomaterials.
View Article and Find Full Text PDFModelling the transformation of energy-intensive industries based on site-specific investment decisions.
Sci Rep
December 2024
Institute of Energy Systems and Thermodynamics, TU Wien, Getreidemarkt 9, Wien, 1060, Austria.
The transition towards climate-neutral industry is a challenge, particularly for heavy industries like steel and basic chemicals. Existing models for assessing industrial transformation often lack spatial resolution and fail to capture individual investment decisions. Consequently, the spatial interplay between industry transformation, energy availability, infrastructure availability, and the dynamics of discrete investments is inadequately addressed.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!