25,194 research outputs found
The PANDA experiment: Antiproton physics at FAIR
No full textThe new Facility for Antiproton and Ion Research (FAIR), under
construction at the GSI laboratory at Darmstadt, in a few years will make available,
among different types of beams, even antiproton beams with unique features.
Through a High Energy Storage Ring (HESR) for antiprotons, an antiproton beam
will be available in a momentum range from 1.5 to 15 GeV/c, which will interact
on a hydrogen target. The products of the interaction, including hadronic systems
with strangeness and/or charm, will be detected with the PANDA magnetic spectrometer
(antiProton ANnihilation at DArmstadt), and the spectroscopic analysis
will allow a detailed investigation on a number of open problems of the hadronic
physics, as the quark confinement, the existence of non-conventional meson states
(so-called glueballs and hybrids), the structure of hadrons and of the strong interaction,
with particular attention to charmonium spectroscopy. An overview of the
scientific program of PANDA and the current status of the project will be presented
GPU-based Online Tracking for the PANDA Experiment
No full textThe PANDA experiment is a new hadron physics experiment currently being built at FAIR, Darmstadt (Germany). PANDA will study fixed-target collisions of antiprotons of 1 . 5 GeV/ c to 15 GeV/ c momentum with protons and nuclei at a rate of 20 million events per second. To distinguish between background and signal events, PANDA will utilize a novel data acquisition technique. The experiment uses a sophisticated software-based event filtering scheme involving the reconstruction of the whole incoming data stream in real- time to trigger its data taking. Algorithms for online track reconstruction are essential for this task. We investigate algorithms running on GPUs to solve PANDA’s real-time computing challenge
Hyperon signatures in the PANDA experiment at FAIR
No full textWe present a detailed simulation study of the signatures from the sequential
decays of the triple-strange pbar p -> {\Omega}+{\Omega}- -> K+{\Lambda}barK-
{\Lambda} -> K+pbar{\pi}+K-p{\pi}- process in the PANDA central tracking system
with focus on hit patterns and precise time measurement. We present a
systematic approach for studying physics channels at the detector level and
develop input criteria for tracking algorithms and trigger lines. Finally, we
study the beam momentum dependence on the reconstruction efficiency for the
PANDA detector
Physics Performance Report for PANDA : Strong Interaction Studies with Antiprotons
No full textTo study fundamental questions of hadron and nuclear physics in interactions of antiprotons with nucleons and nuclei, the universal PANDA detector will be built. Gluonic excitations, the physics of strange and charm quarks and nucleon structure studies will be performed with unprecedented accuracy thereby allowing high-precision tests of the strong interaction. The proposed PANDA detector is a state-of-the art internal target detector at the HESR at FAIR allowing the detection and identification of neutral and charged particles generated within the relevant angular and energy range. This report presents a summary of the physics accessible at PANDA and what performance can be expected. Comment: 216 page
PANDA Phase One: PANDA collaboration
No full textThe Facility for Antiproton and Ion Research (FAIR) in Darmstadt, Germany, provides unique possibilities for a new generation of hadron-, nuclear- and atomic physics experiments. The future antiProton ANnihilations at DArmstadt (PANDA or P ¯ ANDA) experiment at FAIR will offer a broad physics programme, covering different aspects of the strong interaction. Understanding the latter in the non-perturbative regime remains one of the greatest challenges in contemporary physics. The antiproton–nucleon interaction studied with PANDA provides crucial tests in this area. Furthermore, the high-intensity, low-energy domain of PANDA allows for searches for physics beyond the Standard Model, e.g. through high precision symmetry tests. This paper takes into account a staged approach for the detector setup and for the delivered luminosity from the accelerator. The available detector setup at the time of the delivery of the first antiproton beams in the HESR storage ring is referred to as the Phase One setup. The physics programme that is achievable during Phase One is outlined in this paper. © 2021, The Author(s)
Perspectives of Open Charm Physics at
No full textThe experiment at FAIR (Facility for Antiproton and Ion Research) in Darmstadt (Germany) is designed for annihilation studies and it will investigate fundamental questions of hadron and nuclear physics in interactions of antiprotons with nucleons and nuclei. Gluonic excitations and the physics of hadrons with strange and charm quarks will be accessible with unprecedented accuracy, thereby allowing high precision tests of the strong interactions. In particular, the and are still of high interest 11 years after their discovery, because they can not be simply understood in term of potential models. The available statistics and resolution of the past experiments did not allow to clarify their nature. Recently LHCb at CERN has made progresses in this respect, but still not at the level of precision required in order to clarify the puzzle of the -spectrum. will be able to achieve a factor 20 higher mass resolution than attained at the B-factories, which is expected to be decisive on these and second-order open questions. The technique to evaluate the width from the excitation function of the cross section of the mesons will be presented, and ongoing simulations performed with will be shown
The Structure of Scientific Collaboration Networks in Scientometrics
No full textThe structure of scientific collaboration networks in scientometrics was investigated at the level of individuals by using bibliographic data of all papers published in the international journal Scientometrics retrieved from the Science Citation Index (SCI) during 1978 to 2004. Combined analysis of social network analysis (SNA), co-occurrence analysis, cluster analysis and frequency analysis of words was explored to reveal: (1) The microstructure of the collaboration network on scientists’ aspects of scientometrics; (2) The major collaborative fields of the collaborative sub-networks; (3) The collaborative center of the collaboration network in scientometrics
Technical Design Report for PANDA Electromagnetic Calorimeter (EMC)
No full textThis document presents the technical layout and the envisaged performance of the Electromagnetic Calorimeter (EMC) for the PANDA target spectrometer. The EMC has been designed to meet the physics goals of the PANDA experiment, which is being developed for the Facility for Antiproton and Ion Research (FAIR) at Darmstadt, Germany. The performance figures are based on extensive prototype tests and radiation hardness studies. The document shows that the EMC is ready for construction up to the front-end electronics interface. Comment: 199 pages, submitted to FAIR STI on July 1st 2008, Editors: Fritz-Herbert Heinsius, Bertram Kopf, Bernd Lewandowski (Deputy Technical Coordinator), Herbert L\"ohner, Rainer Novotny (Project Coordinator), Klaus Peters, Philippe Rosier, Lars Schmitt (Technical Coordinator), Alexander Vasiliev; Spokespersons: Ulrich Wiedner, Paola Gianotti (deputy
Technical Design Report for the PANDA Barrel DIRC Detector
No full textThis documents describes the technical design and the expected performance of the Barrel DIRC detector for the PANDA experiment. The Barrel DIRC will provide hadronic charged particle identification in the polar angle range of to for particle momenta between 0.5 GeV/c and 3.5 GeV/c. The design is based on the successful BaBar DIRC with several key improvements. The performance and system cost were optimized in detailed detector simulations and validated with full system prototypes using particle beams at GSI and CERN. The final design meets or exceeds the PID goal of clean separation with at least 3 standard deviations over the entire phase space of charged kaons in the Barrel DIRC
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