An overview of recent results from the sPHENIX Collaboration spanning the full scientific program is presented. Recent publications on standard-candle measurements are presented in addition to photon and jet cross sections, which demonstrate how sPHENIX can extend to higher momentum measurements than previous RHIC experiments. Transverse Single Spin Asymmetries for neutral mesons and jets are also discussed. The evolution of the dijet-momentum imbalance as a function of centrality in Au+Au collisions is also compared to the imbalance in \(pp\) collisions. Finally, invariant mass distributions of several resonances and heavy-flavor hadrons are presented to demonstrate the significant progress made on tracking calibrations and corrections. Abstract Published by the Jagiellonian University 2026 authors
The \(B \rightarrow K\tau \ell \) decays (where \(\ell =e,\mu \)) are not allowed in the Standard Model (SM) at the tree level due to lepton flavor violation (LFV). In some New Physics (NP) models, their branching fractions are within the reach of the current experimental sensitivities. The Belle and Belle II experiments provide ideal conditions for their search. We used the basic kinematic constraints of the experiments to reconstruct them. A multivariate classifier score is used to model the signal and background. For the estimation of statistical upper limits (ULs), the Bayesian approach is used. To validate the analysis method, two control channel modes are used. Abstract Published by the Jagiellonian University 2026 authors
An overview of charm-quark hadronisation within the PYTHIA/Angantyr model is provided. The improvements to the junction formation and fragmentation mechanisms in the context of charm-quark hadronisation are discussed. We discuss these changes in the context of the recently developed global colour reconnection mechanism, which is based on the QCD-inspired colour reconnection model. We show the enhancement in \({\mit \Lambda }_c\) baryon yield in \(\pp \) and \(\pPb \) collisions at the LHC at \(\sqrt {s_{NN}} = 5.02\) TeV collision energy using the PYTHIA/Angantyr model. Abstract Published by the Jagiellonian University 2026 authors
A successor to the PACIFIC front-end ASIC, currently used in the LHCb Scintillating Fibre (SciFi) Tracker, is being developed for the second foreseen upgrade of the LHCb experiment. The new ASIC, referred to as PACIFIC++, is implemented in 65 nm CMOS technology and extends the architecture of the existing PACIFIC, designed in 130 nm CMOS technology. The new design introduces a 10-bit ADC and a 6-bit TDC measurement in each channel, together with on-chip clustering. The PACIFIC++ is proposed for the readout of the Mighty SciFi Tracker and Magnet Station detectors in the LHCb Upgrade II. An 8-channel prototype version of PACIFIC++, called PACIFIC+8, including all key functionalities, is currently being prepared for submission. This paper discusses the PACIFIC++ architecture and its current state of development. Abstract Published by the Jagiellonian University 2026 authors
An intermediate 48 V to 11 V DC/DC conversion stage, located in Patch Panel 2 (PP2), constitutes a key element of the power delivery chain for the ATLAS Inner Tracker (ITk) Strip detector. The design, based on commercial off-the-shelf components, meets the detector constraints and radiation tolerance requirements. Pre-production DC/DC boards demonstrate efficiencies above 81% across the full load range and low output noise, confirming the robustness of the PP2 system. Abstract Published by the Jagiellonian University 2026 authors
