Study of B Meson Production in p plus Pb Collisions at root s(NN)=5.02 TeV Using Exclusive Hadronic Decays

Peer reviewe

Reconstruction of interactions in the ProtoDUNE-SP detector with Pandora

The Pandora Software Development Kit and algorithm libraries provide pattern-recognition logic essential to the reconstruction of particle interactions in liquid argon time projection chamber detectors. Pandora is the primary event reconstruction software used at ProtoDUNE-SP, a prototype for the Deep Underground Neutrino Experiment far detector. ProtoDUNE-SP, located at CERN, is exposed to a charged-particle test beam. This paper gives an overview of the Pandora reconstruction algorithms and how they have been tailored for use at ProtoDUNE-SP. In complex events with numerous cosmic-ray and beam background particles, the simulated reconstruction and identification efficiency for triggered test-beam particles is above 80% for the majority of particle type and beam momentum combinations. Specifically, simulated 1 GeV/c charged pions and protons are correctly reconstructed and identified with efficiencies of 86.1 ± 0.6 % and 84.1 ± 0.6 %, respectively. The efficiencies measured for test-beam data are shown to be within 5% of those predicted by the simulation

Proton reconstruction with the CMS-TOTEM Precision Proton Spectrometer

arXiv ePrint: 2210.05854 (https://arxiv.org/abs/2210.05854).Copyright © 2023 CERN. The Precision Proton Spectrometer (PPS) of the CMS and TOTEM experiments collected 107.7 fb-1 in proton-proton (pp) collisions at theLHCat 13 TeV(Run 2). This paper describes the key features of the PPS alignment and optics calibrations, the proton reconstruction procedure, as well as the detector efficiency and the performance of the PPS simulation. The reconstruction and simulation are validated using a sample of (semi)exclusive dilepton events. The performance of PPS has proven the feasibility of continuously operating a near-beam proton spectrometer at a high luminosity hadron collider.SCOAP3

Case 37-1994: Juvenile chronic myelogenous leukemia

To the Editor: The case report in the October 13 issue1 describes a newborn boy with juvenile chronic myelogenous leukemia that was diagnosed on the basis of “an open-liver biopsy, which revealed an extensive… infiltrate composed of immature-appearing mononuclear cells… having reactivity for myeloperoxidase… and lysozyme.” In our view, this diagnostic procedure was potentially dangerous for the patient and adds little information. In fact, the diagnosis could have been made by assessing the proliferation of the patient's granulocyte–macrophage progenitors in vitro. In patients with juvenile chronic myelogenous leukemia, the peripheral-blood… © 1995, Massachusetts Medical Society. All rights reserved