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  1. Jet modification via πœ‹0-hadron correlations in Au + Au collisions at $$\sqrt{s_{NN}}$$ = 200 GeV

    Abdulameer, N. J. ; Acharya, U. ; Adare, A. ; ... - Physical Review. C
    High-momentum two-particle correlations are a useful tool for studying jet-quenching effects in the quark-gluon plasma. Angular correlations between neutral-pion triggers and charged hadrons with transverse momenta in the range 4–12 GeV/𝑐 and 0.5–7 GeV/𝑐, respectively, have been measured by the PHENIX experiment in 2014 for Au + Au collisions at $$\sqrt{s_{NN}}$$ = 200 GeV. Suppression is observed in the yield of high-momentum jet fragments opposite the trigger particle, which indicates jet suppression stemming from in-medium partonic energy loss, while enhancement is observed for low-momentum particles. The ratio and differences between the yield in Au + Au collisions and 𝑝 +more » 𝑝 collisions, 𝐼𝐴⁒𝐴 and Δ𝐴⁒𝐴, as a function of the trigger-hadron azimuthal separation, Ξ”β’πœ™, are measured for the first time at the BNL Relativistic Heavy Ion Collider. Finally, these results better quantify how the yield of low-𝑝𝑇 associated hadrons is enhanced at wide angle, which is crucial for studying energy loss as well as medium-response effects.« less

  2. Position sensitive device technologies for particle physics

    Merkel, Petra - Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
    Here, I will give a brief overview of the use of position sensitive devices for particle physics. I will focus on silicon-based systems only. In addition to the depiction of a suite of recently designed, built, and operated detectors I will also introduce planned near term additions. I will conclude with a brief outlook regarding challenges for silicon detector applications for future colliders.

  3. A Neural Network approach to reconstructing SuperKEKB beam parameters from beamstrahlung

    Di Carlo, Salvatore ; Bonvicini, G. ; Althubiti, N. A. ; ... - Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
    Here, this work shows how it is possible to reconstruct SuperKEKB’s beam parameters using a Neural Network with beamstrahlung signal from the Large Angle Beamstrahlung Monitor (LABM) as input. We describe the device, the model, and discuss the results.
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