International Linear Collider
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Measurements of Higgs couplings to fermions and interpretations of Higgs XS measurements at ATLAS and CMS
No full textThe presentation comprises the latest Higgs boson couplings to fermions and the combination of the cross-section measurements with their interpretations
CERN PGDay 2025
No full textIn this talk, we will showcase our use of a Massively Parallel Postgres Database as a petabyte-scale astronomical datastore, powering variable star analysis for the ESA Gaia space telescope. Our presentation will also highlight two Postgres extensions developed in-house: a new Postgres-to-Java interface and a GPU-accelerated vector index. Both extensions are implemented as Postgres background workers and improve on existing solutions in the HPC context
From QCD phenomenology to nuclear physics phenomenology: the chiral confining model
No full textWe present a theoretical framework that allows one to make an explicit connection between the phenomenology of QCD, namely the properties of the gluon correlator and Wilson loops, and a particular relativistic model for the description of nuclear matter and neutron stars: the chiral confining model. Starting with the field correlator method, which explicitly and simultaneously incorporates confinement and chiral symmetry breaking, we describe how to obtain the response of the composite nucleon to the nuclear scalar field, as well as the relative role of confinement and chiral symmetry breaking in in-medium nucleon mass evolution, thereby generating the three-body forces needed for the saturation mechanism.We present a theoretical framework allowing to make an explicit connection between the phenomenology of QCD, namely the properties of the gluon correlator and Wilson loops, and a particular relativistic model for the description of nuclear matter and neutron stars, the chiral confining model. Starting with the Field Correlator Method, which incorporates explicitly and simultaneously confinement and chiral symmetry breaking, we describe how to obtain the response of the composite nucleon to the nuclear scalar field, the relative role of confinement and chiral symmetry breaking in the in-medium nucleon mass evolution, generating the three-body forces needed for the saturation mechanism
Advancements in the in-file metadata system for the ATLAS experiment
No full textThe High-Luminosity upgrade of the Large Hadron Collider (HL-LHC) will increase luminosity and the number of events by an order of magnitude, demanding more concurrent processing. Event processing is trivially parallel, but metadata handling is more complex and breaks that parallelism. However, correct and reliable in-file metadata is crucial for all workflows of the experiment, enabling tasks such as job configuration, decoding trigger information, and keeping track of event selection. Therefore, ATLAS is enhancing its current in-file metadata system to support metadata creation and propagation in more robust ways. This work presents developments in the evolution of the metadata system. We investigate storage technologies tailored for in-file metadata payload, exploring advancements in the ROOT framework, which is used for storing data collected by the ATLAS experiment. We also discuss the challenging process of summarising the content of metadata objects when combining information from several sources
Artwork illustrating current and projected CMS integrated luminosity, with selected results and prospects
No full textAn artwork (infographic) depicting integrated luminosity collected by the CMS detector until now, and projected to 2041. Pointers to selected physics results highlights, and possibilities for the future, are also depicted
Probes of flavour symmetry and violation with top quarks in ATLAS and CMS
No full textResults are presented of searches and measurements in the top quark sector by the ATLAS and CMS experiments. These analyses use data from proton-proton collisions at a centre-of-mass energy of 13 TeV, recorded between 2015 and 2018 at the Large Hadron Collider and corresponding to integrated luminosities of 138--140 fb-1. Searches are carried out for charged lepton flavour violation, baryon number violation and the presence of neutral heavy leptons. A precise measurement of lepton flavour universality between electrons and muons originating from top quark-antiquark events is also presented
AIDAinnova Course on Quantum Applications
No full textQuantitative CMOS (qCMOS) is a cutting-edge image sensor capable of not only detecting single photons but also resolving their number, making it a powerful tool in advanced photonics. With exceptionally low readout noise and high quantum efficiency, qCMOS has found broad range of applications, including a rapidly expanding role in quantum technologies such as quantum sensing and quantum computing.
This lecture begins by introducing key concepts and metrics fundamental to photon-number resolving detectors, with a focus on the unique capabilities of qCMOS. It then traces the historical development of photon-number resolving technologies and concludes with a discussion on quantum applications, highlighting how qCMOS serves as a critical asset in modern quantum systems
