The Key4hep project aims to provide a turnkey software solution for the full experiment life-cycle, based on established community tools. Several future collider communities (CEPC, CLIC, EIC, FCC, and ILC) have joined to develop and adapt their workflows to use the common data model EDM4hep and common framework. Besides sharing of existing experiment workflows, one focus of the Key4hep project...
The Standard Model prediction for the $Z$-boson pole $b$-quark forward-backward asymmetry is calculated to be $(A_{FB}^{0,b})_{th} = 0.1030 \pm 0.0002$. From the experimental point of view, $A_{FB}^b$ as measured by the large electron-positron (LEP) collider at the $Z$-pole is $A_{FB}^{0,b} = 0.0992 \pm 0.0016$, which remains today the electroweak precision observable with the largest...
The FCC-ee is a proposed future $e^+e^-$ collider capable of producing an unparalleled number of Higgs, Z, and W bosons, as well as of top quarks, in very clean experimental conditions. Up to four experiments can detect the collision products, with IDEA being one of the proposed detector concepts. A plethora of measurements at the FCC-ee rely on precise and accurate measurements of bottom and...
The Future Circular Collider (FCC) study explores the feasibility of post-LHC colliders with a circumference of almost 100 km. As a first stage, a high-luminosity electron-positron collider (FCC-ee) is envisaged, with a beam energy ranging from 45.6 GeV (Z pole) to 182.5 GeV (ttbar threshold). The most intense radiation source at FCC-ee interaction region (IR) is the production of synchrotron...
Reconstructing particles from raw detector outputs at the FCC is a challenging task due to complex detector geometries and highly granular, unique shower shapes. Conventional computer vision approaches are typically not suitable for application to the sparse detector outputs, so other methods more suited for unstructured data shall be consulted. We employ E(n) equivariant graph neural networks...
A future high energy muon collider can probe the multi-TeV regime and greatly improve our understanding of the Higgs self-coupling. One of the major challenges to detector performance is the beam induced background (BIB) which comes from muon decays along the beam pipe. The upstream and downstream electromagnetic showers blanket the detector with low energy photons, electrons and neutrons....
The analysis of the long-range particle correlations can
yield valuable insights into the initial state of matter and
potentially reveal the existence of Beyond the Standard Model
scenarios, such as the "Hidden Valley"(HV) one. In this work, we are
interested in QCD-like hidden sectors in which the production of HV
matter would enhance and enlarge azimuthal correlations of...
