Publications by authors named "L Bellagamba"
High-energy nuclear collisions create a quark-gluon plasma, whose initial condition and subsequent expansion vary from event to event, impacting the distribution of the eventwise average transverse momentum [P([p_{T}])]. Disentangling the contributions from fluctuations in the nuclear overlap size (geometrical component) and other sources at a fixed size (intrinsic component) remains a challenge. This problem is addressed by measuring the mean, variance, and skewness of P([p_{T}]) in ^{208}Pb+^{208}Pb and ^{129}Xe+^{129}Xe collisions at sqrt[s_{NN}]=5.
View Article and Find Full Text PDFArticle Synopsis
- The aryl hydrocarbon receptor (AhR) is significant in immune and metabolic processes, but its complexity and diverse ligands make drug discovery challenging.
- Researchers created quantitative structure-activity relationship (QSAR) models by analyzing 978 molecules to improve predictions of AhR activity.
- The best classification model achieved 76% accuracy and led to the development of a user-friendly web application, potentially paving the way for further studies on how ligand structure affects AhR modulation.
Article Synopsis
- The XENONnT dark matter experiment successfully measured nuclear recoils from solar ^{8}B neutrinos, marking a significant advancement in neutrino detection technology.
- Using a two-phase time projection chamber with a 5.9 t liquid xenon target, the experiment produced 37 observed events, which surpassed the expected background events, indicating a notable signal.
- The results provide a measured solar neutrino flux consistent with previous studies and confirm the neutrino cross section predictions aligned with the Standard Model, showcasing the effectiveness of dark matter detectors in neutrino research.
A search for the exclusive hadronic decays W^{±}→π^{±}γ, W^{±}→K^{±}γ, and W^{±}→ρ^{±}γ is performed using up to 140 fb^{-1} of proton-proton collisions recorded with the ATLAS detector at a center-of-mass energy of sqrt[s]=13 TeV. If observed, these rare processes would provide a unique test bench for the quantum chromodynamics factorization formalism used to calculate cross sections at colliders. Additionally, at future colliders, these decays could offer a new way to measure the W boson mass through fully reconstructed decay products.
View Article and Find Full Text PDFArticle Synopsis
- - The ATLAS experiment at the LHC conducted a search for long-lived particles (LLPs) using a large dataset (140 fb^{-1}) from proton-proton collisions at 13 TeV, focusing on LLPs with masses from 5 to 55 GeV that decay within the inner detector.
- - The study considered scenarios where LLPs are produced from exotic Higgs boson decays and models involving axionlike particles (ALPs).
- - No significant findings above expected background levels were detected, leading to the establishment of upper limits on various production rates involving the Higgs boson and the top quark related to LLPs and ALPs.