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    Search for the double Dalitz decays η/η´\eta/\eta^{´}\rightarrowe+eμ+μe^{+}e^{-}\mu^{+}\mu^{-} and η´\eta^{´}\rightarrow μ+μμ+μ\mu^{+}\mu^{-}\mu^{+}\mu^{-}

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    Measurement of the decay Ξ0Λγ\Xi^{0}\rightarrow\Lambda\gamma with entangled Ξ0Ξ0\Xi^{0}\overline{\Xi}^{0} pairs

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    Search for lepton number violating decays of Ds+hh0e+e+{\textrm{D}}_{\textrm{s}}^{+}\rightarrow h^{−}h^{0}e^{+}e^{+}

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    Integrating HPC Centers with JENA Computing Infrastructures: Key Findings and Recommendations

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    The conclusions of the Joint ECFA-NuPECC-APPEC (JENA) Computing Workshop, held in Bologna on June 12–14, 2023, emphasized the growing need for strategic discussions on the implementation of European federated computing at future large-scale research facilities. The workshop identified five priority areas for assessment. This report focuses on one of them, summarizing discussions on the needs and recommendations for integrating High-Performance Computing (HPC) centers with the High-Throughput Computing (HTC) systems used to manage and analyze data from large-scale experiments like the Worldwide LHC Computing Grid (WLCG). This report, written by the HPC Working Group (WG), a group of experts on HPC integration from the three JENA research areas, has been presented at the 3rd Joint ECFA-NuPECC-ApPEC Symposium, held at the Harwell Campus, Didcot, Oxfordshire (UK) on April 8-11, 2025

    Determining the duration of the hadronic stage at RHIC-BES energies via resonance suppression using a full set of rate equations

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    We present realistic estimates for the duration of the hadronic stage in central Au+Au reactions in the RHIC-BES energy regime. To this aim, we employ a full set of coupled rate equations to describe the time evolution of the system from chemical to kinetic freeze-out. Combined with the recently measured data by the STAR collaboration on K⁎/K ratios, we show that the previous estimates substantially underestimated the duration of this stage due to the omission of the regeneration of hadron resonances. We provide an improved relation between the K⁎/K ratio at chemical and kinetic freeze-out and the life time of the hadronic phase. The calculated improved life times are now in line with estimates from other methods and are relevant for the NA61 and STAR collaborations and for upcoming experiments at the FAIR facility

    Evolution οf the spin-οrbit splitting from 160 tο 220 and the role οf tensor force

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