Suchergebnisse

Wronka, Slawomir/0000-0003-3277-138X; Diaz, Jose/0000-0002-7239-223X; Mochalov, Vasilii/0000-0002-5752-5807 ; The antiproton experiment PANDA at FAIR is designed to bring hadron physics to a new level in terms of scope, precision and accuracy. In this work, its unique capability for studies of hyperons is outlined. We discuss groundstate hyperons as diagnostic tools to study non-perturbative aspects of the strong interaction, and fundamental symmetries. New simulation studies have been carried out for two benchmark hyperon-antihyperon production channels: (p) over barp -> (Lambda) over bar Lambda and (p) over barp -> (Xi) over bar+Xi(-). The results, presented in detail in this paper, show that hyperon-antihyperon pairs from these reactions can be exclusively reconstructed with high efficiency and very low background contamination. In addition, the polarisation and spin correlations have been studied, exploiting the weak, self-analysing decay of hyperons and antihyperons. Two independent approaches to the finite efficiency have been applied and evaluated: one standard multidimensional efficiency correction approach, and one efficiency independent approach. The applicability of the latter was thoroughly evaluated for all channels, beam momenta and observables. The standard method yields good results in all cases, and shows that spin observables can be studied with high precision and accuracy already in the first phase of data taking with PANDA. ; Bhabha Atomic Research Centre (BARC), India; Indian Institute of Technology Bombay, India; Bundesministerium fur Bildung und Forschung (BMBF), GermanyFederal Ministry of Education & Research (BMBF); Carl-Zeiss-Stiftung, Mainz, Germany [21-0563-2.8/122/1, 21-0563-2.8/131/1]; Center for Advanced Radiation Technology (KVI-CART), Groningen, Netherlands; CNRS/IN2P3, FranceCentre National de la Recherche Scientifique (CNRS); Universite Paris-Sud, France; Czech Ministry (MEYS), Germany [LM2015049, CZ.02.1.01/0.0/0.0/16, 013/0001677]; Deutsche Forschungsgemeinschaft (DFG), GermanyGerman Research Foundation (DFG); Deutscher Akademischer Austauschdienst (DAAD), GermanyDeutscher Akademischer Austausch Dienst (DAAD); European Union's Horizon 2020 research and innovation programme [824093]; Forschungszentrum Julich, Germany; Gesellschaft fur Schwerionenforschung GmbH (GSI), Darmstadt, GermanyHelmholtz Association; Helmholtz-Gemeinschaft Deutscher Forschungszentren (HGF), Germany; INTAS, European Commission funding, China; Institute of High Energy Physics (IHEP), China; Chinese Academy of Sciences, Beijing, ChinaChinese Academy of Sciences; stituto Nazionale di Fisica Nucleare (INFN), Italy; Ministerio de Educacion y Ciencia (MEC)Spanish GovernmentEuropean Commission [FPA2006-12120-C03-02]; Polish Ministry of Science and Higher Education (MNiSW), PolandMinistry of Science and Higher Education, Poland [2593/7, PR UE/2012/2]; National Science Centre (NCN), PolandNational Science Centre, Poland [DEC-2013/09/N/ST2/02180]; State Atomic Energy Corporation Rosatom, National Research Center Kurchatov Institute, Russia; Schweizerischer Nationalfonds zur Forderung der Wissenschaftlichen Forschung (SNF), Swiss; Science and Technology Facilities Council (STFC), British funding agency, Great BritainUK Research & Innovation (UKRI)Science & Technology Facilities Council (STFC); Scientific and Technological Research Council of Turkey (TUBITAK)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [119F094]; Stefan Meyer Institut fur Subatomare Physik; osterreichische Akademie der Wissenschaften, Wien, Austria; Swedish Research CouncilSwedish Research CouncilEuropean Commission; Knut and Alice Wallenberg Foundation, SwedenKnut & Alice Wallenberg Foundation ; We acknowledge financial support from the Bhabha Atomic Research Centre (BARC) and the Indian Institute of Technology Bombay, India; the Bundesministerium fur Bildung und Forschung (BMBF), Germany; the Carl-Zeiss-Stiftung 21-0563-2.8/122/1 and 21-0563-2.8/131/1, Mainz, Germany; the Center for Advanced Radiation Technology (KVI-CART), Groningen, Netherlands; the CNRS/IN2P3 and the Universite Paris-Sud, France; the Czech Ministry (MEYS) grants LM2015049, CZ.02.1.01/0.0/0.0/16 and 013/0001677, the Deutsche Forschungsgemeinschaft (DFG), Germany; the Deutscher Akademischer Austauschdienst (DAAD), Germany; the European Union's Horizon 2020 research and innovation programme under grant agreement No 824093. the Forschungszentrum Julich, Germany; the Gesellschaft fur Schwerionenforschung GmbH (GSI), Darmstadt, Germany; the Helmholtz-Gemeinschaft Deutscher Forschungszentren (HGF), Germany; the INTAS, European Commission funding; the Institute of High Energy Physics (IHEP) and the Chinese Academy of Sciences, Beijing, China; the Istituto Nazionale di Fisica Nucleare (INFN), Italy; the Ministerio de Educacion y Ciencia (MEC) under grant FPA2006-12120-C03-02; the Polish Ministry of Science and Higher Education (MNiSW) grant No. 2593/7, PR UE/2012/2, and the National Science Centre (NCN) DEC-2013/09/N/ST2/02180, Poland; the State Atomic Energy Corporation Rosatom, National Research Center Kurchatov Institute, Russia; the Schweizerischer Nationalfonds zur Forderung der Wissenschaftlichen Forschung (SNF), Swiss; the Science and Technology Facilities Council (STFC), British funding agency, Great Britain; the Scientific and Technological Research Council of Turkey (TUBITAK) under the Grant No. 119F094 the Stefan Meyer Institut fur Subatomare Physik and the osterreichische Akademie der Wissenschaften, Wien, Austria; the Swedish Research Council and the Knut and Alice Wallenberg Foundation, Sweden.

Kozela, Adam/0000-0002-3286-4933; Wronka, Slawomir/0000-0003-3277-138X; Mochalov, Vasilii/0000-0002-5752-5807; Filo, Grzegorz/0000-0003-0848-6124; Szczurek, Antoni/0000-0001-5247-8442; Kantsyrev, Alexey V/0000-0001-5301-5597; Widmann, Eberhard/0000-0003-0486-6023; Yilmaz, Ali/0000-0001-5963-8306; Barnyakov, Alexander/0000-0002-8556-6622; Bracco, Gianangelo/0000-0002-0055-5802; Moskal, Pawel/0000-0002-4229-3548; Davi, Fabrizio/0000-0002-8146-7715; Novotny, Radek/0000-0002-1630-694X; Schmidt, Mustafa/0000-0002-4467-2461 ; This paper reports on Monte Carlo simulation results for future measurements of the moduli of time-like proton electromagnetic form factors, vertical bar G(E)vertical bar and vertical bar G(M)vertical bar, using the (p) over barp -> mu(+)mu(-) reaction at PANDA (FAIR). The electromagnetic form factors are fundamental quantities parameterizing the electric and magnetic structure of hadrons. This work estimates the statistical and total accuracy with which the form factors can be measured at PANDA, using an analysis of simulated data within the PandaRoot software framework. The most crucial background channel is (p) over barp -> pi(+)pi(-), due to the very similar behavior of muons and pions in the detector. The suppression factors are evaluated for this and all other relevant background channels at different values of antiproton beam momentum. The signal/background separation is based on a multivariate analysis, using the Boosted Decision Trees method. An expected background subtraction is included in this study, based on realistic angular distributions of the background contribution. Systematic uncertainties are considered and the relative total uncertainties of the form factor measurements are presented. ; Science and Technology Facilities Council (STFC), British funding agency, Great BritainUK Research & Innovation (UKRI)Science & Technology Facilities Council (STFC); Bhabha Atomic Research Centre (BARC), India; Indian Institute of Technology Bombay, India; Bundesministerium fur Bildung und Forschung (BMBF), GermanyFederal Ministry of Education & Research (BMBF); Carl-Zeiss-Stiftung, Mainz, Germany [21-0563-2.8/122/1, 21-0563-2.8/131/1]; Center for Advanced Radiation Technology (KVI-CART), Groningen, Netherlands; CNRS/IN2P3, FranceCentre National de la Recherche Scientifique (CNRS); Universite Paris-Sud, France; Czech Ministry (MEYS), Germany [LM2015049, CZ.02.1.01/0.0/0.0/16, 013/0001677]; Deutsche Forschungsgemeinschaft (DFG), GermanyGerman Research Foundation (DFG); Deutscher Akademischer Austauschdienst (DAAD), GermanyDeutscher Akademischer Austausch Dienst (DAAD); Forschungszentrum Julich, Germany; European Union's Horizon 2020 research and innovation program [824093]; Gesellschaft fur Schwerionenforschung GmbH (GSI), Darmstadt, GermanyHelmholtz Association; Helmholtz-Gemeinschaft Deutscher Forschungszentren (HGF), Germany; INTAS, European Commission funding; Institute of High Energy Physics (IHEP), Beijing, China; Chinese Academy of Sciences, Beijing, ChinaChinese Academy of Sciences; Istituto Nazionale di Fisica Nucleare (INFN), ItalyIstituto Nazionale di Fisica Nucleare (INFN); Ministerio de Educacion y Ciencia (MEC)Spanish GovernmentEuropean Commission [FPA2006-12120-C03-02]; Polish Ministry of Science and Higher Education (MNiSW), PolandMinistry of Science and Higher Education, Poland [2593/7, PR UE/2012/2]; National Science Centre (NCN), PolandNational Science Centre, Poland [DEC-2013/09/N/ST2/02180]; State Atomic Energy Corporation Rosatom, National Research Center Kurchatov Institute, Russia; Schweizerischer Nationalfonds zur Forderung der Wissenschaftlichen Forschung (SNF), Swiss; Stefan Meyer Institut fur Subatomare Physik, Austria; osterreichische Akademie der Wissenschaften, Wien, Austria; Swedish Research Council, SwedenSwedish Research Council; Knut and Alice Wallenberg Foundation, SwedenKnut & Alice Wallenberg Foundation; Scientific and Technological Research Council of Turkey (TUBITAK)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [119F094] ; We acknowledge financial support from the Science and Technology Facilities Council (STFC), British funding agency, Great Britain; the Bhabha Atomic Research Centre (BARC) and the Indian Institute of Technology Bombay, India; the Bundesministerium fur Bildung und Forschung (BMBF), Germany; the Carl-Zeiss-Stiftung 21-0563-2.8/122/1 and 21-0563-2.8/131/1, Mainz, Germany; the Center for Advanced Radiation Technology (KVI-CART), Groningen, Netherlands; the CNRS/IN2P3 and the Universite Paris-Sud, France; the Czech Ministry (MEYS) Grants LM2015049, CZ.02.1.01/0.0/0.0/16 and 013/0001677, the Deutsche Forschungsgemeinschaft (DFG), Germany; the Deutscher Akademischer Austauschdienst (DAAD), Germany; the Forschungszentrum Julich, Germany; the European Union's Horizon 2020 research and innovation program under grant agreement No 824093; the Gesellschaft fur Schwerionenforschung GmbH (GSI), Darmstadt, Germany; the Helmholtz-Gemeinschaft Deutscher Forschungszentren (HGF), Germany; the INTAS, European Commission funding; the Institute of High Energy Physics (IHEP) and the Chinese Academy of Sciences, Beijing, China; the Istituto Nazionale di Fisica Nucleare (INFN), Italy; the Ministerio de Educacion y Ciencia (MEC) under Grant FPA2006-12120-C03-02; the Polish Ministry of Science and Higher Education (MNiSW) Grant No. 2593/7, PR UE/2012/2, and the National Science Centre (NCN) DEC-2013/09/N/ST2/02180, Poland; the State Atomic Energy Corporation Rosatom, National Research Center Kurchatov Institute, Russia; the Schweizerischer Nationalfonds zur Forderung der Wissenschaftlichen Forschung (SNF), Swiss; the Stefan Meyer Institut fur Subatomare Physik and the osterreichische Akademie der Wissenschaften, Wien, Austria; the Swedish Research Council and the Knut and Alice Wallenberg Foundation, Sweden; the Scientific and Technological Research Council of Turkey (TUBITAK) under Grant No. 119F094.

Szczurek, Antoni/0000-0001-5247-8442; Yilmaz, Ali/0000-0001-5963-8306; Mochalov, Vasilii/0000-0002-5752-5807; Davi, Fabrizio/0000-0002-8146-7715 ; The study of baryon excitation spectra provides insight into the inner structure of baryons. So far, most of the world-wide efforts have been directed towards N * and Delta spectroscopy. Nevertheless, the study of the double and triple strange baryon spectrum provides independent information to the N * and Delta spectra. The future antiproton experiment (P) over bar ANDA will provide direct access to final states containing a (Xi) over bar Xi pair, for which production cross sections up to mu b are expected in (p) over barp reactions. With a luminosity of L = 10(31) cm(-2) s(-1) in the first phase of the experiment, the expected cross sections correspond to a production rate of similar to 10(6) events/day. With a nearly 4 pi detector acceptance, (P) over bar ANDA will thus be a hyperon factory. In this study, reactions of the type (p) over barp -> (Xi) over bar (+)Xi*(-) as well as (p) over barp -> (Xi) over bar*(+)Xi(-) with various decay modes are investigated. For the exclusive reconstruction of the signal events a full decay tree fit is used, resulting in reconstruction efficiencies between 3 and 5%. This allows high statistics data to be collected within a few weeks of data taking. ; Bhabha Atomic Research Centre (BARC), India; Indian Institute of Technology Bombay, India; Bundesministerium fur Bildung und Forschung (BMBF), GermanyFederal Ministry of Education & Research (BMBF); Carl-Zeiss-Stiftung, Mainz, Germany [21-0563-2.8/122/1, 21-0563-2.8/131/1]; Center for Advanced Radiation Technology (KVI-CART), Groningen, Netherlands; Universite Paris-Sud, France; Czech Ministry (MEYS), Czech Republic [LM2015049, CZ.02.1.01/0.0/0.0/16, 013/0001677]; Deutscher Akademischer Austauschdienst (DAAD), GermanyDeutscher Akademischer Austausch Dienst (DAAD); Deutsche Forschungsgemeinschaft (DFG), GermanyGerman Research Foundation (DFG); European UnionEuropean Commission [824093]; Forschungszentrum Julich, Germany; Gesellschaft fur Schwerionenforschung GmbH (GSI), Darmstadt, GermanyHelmholtz Association; Helmholtz-Gemeinschaft Deutscher Forschungszentren (HGF), Germany; INTAS, European Commission funding; Chinese Academy of Sciences, Beijing, ChinaChinese Academy of Sciences; Istituto Nazionale di Fisica Nucleare (INFN), ItalyIstituto Nazionale di Fisica Nucleare (INFN); Ministerio de Educacion y Ciencia (MEC), SpainSpanish Government [FPA2006-12120-C03-02]; Polish Ministry of Science and Higher Education (MNiSW)Ministry of Science and Higher Education, Poland [2593/7, PR UE/2012/2]; National Science Centre (NCN), PolandNational Science Centre, Poland [DEC-2013/09/N/ST2/02180]; State Atomic Energy Corporation Rosatom, Russia; National Research Center Kurchatov Institute, Russia; Schweizerischer Nationalfonds zur Forderung der Wissenschaftlichen Forschung (SNF), Switzerland; Science and Technology Facilities Council (STFC), British funding agency, Great BritainUK Research & Innovation (UKRI)Science & Technology Facilities Council (STFC); Scientific and Technological Research Council of Turkey (TUBITAK), TurkeyTurkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [119F094]; Osterreichische Akademie der Wissenschaften, Wien, Austria; Knut and Alice Wallenberg Foundation, SwedenKnut & Alice Wallenberg Foundation; CNRS/IN2P3, FranceCentre National de la Recherche Scientifique (CNRS); Institute of High Energy Physics (IHEP), Beijing, China; Stefan Meyer Institut fur Subatomare Physik, Wien, Austria; Swedish Research Council, SwedenSwedish Research Council ; We acknowledge financial support from the Bhabha Atomic Research Centre (BARC) and the Indian Institute of Technology Bombay, India; the Bundesministerium fur Bildung und Forschung (BMBF), Germany; the Carl-Zeiss-Stiftung 21-0563-2.8/122/1 and 21-0563-2.8/131/1, Mainz, Germany; the Center for Advanced Radiation Technology (KVI-CART), Groningen, Netherlands; the CNRS/IN2P3 and the Universite Paris-Sud, France; the Czech Ministry (MEYS) Grants LM2015049, CZ.02.1.01/0.0/0.0/16 and 013/0001677, Czech Republic; the Deutsche Forschungsgemeinschaft (DFG), Germany; the Deutscher Akademischer Austauschdienst (DAAD), Germany; the European Union's Horizon 2020 research and innovation programme under grant agreement No 824093; the Forschungszentrum Julich, Germany; the Gesellschaft fur Schwerionenforschung GmbH (GSI), Darmstadt, Germany; the Helmholtz-Gemeinschaft Deutscher Forschungszentren (HGF), Germany; the INTAS, European Commission funding; the Institute of High Energy Physics (IHEP) and the Chinese Academy of Sciences, Beijing, China; the Istituto Nazionale di Fisica Nucleare (INFN), Italy; the Ministerio de Educacion y Ciencia (MEC) under grant FPA2006-12120-C03-02, Spain; the Polish Ministry of Science and Higher Education (MNiSW) Grant No. 2593/7, PR UE/2012/2, and the National Science Centre (NCN) DEC-2013/09/N/ST2/02180, Poland; the State Atomic Energy Corporation Rosatom, National Research Center Kurchatov Institute, Russia; the Schweizerischer Nationalfonds zur Forderung der Wissenschaftlichen Forschung (SNF), Switzerland; the Science and Technology Facilities Council (STFC), British funding agency, Great Britain; the Scientific and Technological Research Council of Turkey (TUBITAK) under the Grant No. 119F094, Turkey; the Stefan Meyer Institut fur Subatomare Physik and the Osterreichische Akademie der Wissenschaften, Wien, Austria; the Swedish Research Council and the Knut and Alice Wallenberg Foundation, Sweden.

The 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 PANDA) 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. ; Theory Advisory Group (ThAG) of PANDA; Bhabha Atomic Research Centre (BARC)Department of Atomic Energy (DAE); Indian Institute of Technology Bombay, India; Bundesministerium fur Bildung und Forschung (BMBF), GermanyFederal Ministry of Education & Research (BMBF); Carl-Zeiss-Stiftung, Mainz, Germany [21-0563-2.8/122/1, 21-05632.8/131/1]; CNRS/IN2P3Centre National de la Recherche Scientifique (CNRS); Universite Paris-Sud, France; Czech Ministry (MEYS) [LM2015049, CZ.02.1.01/0.0/0.0/16, 013/0001677]; Deutsche Forschungsgemeinschaft (DFG), GermanyGerman Research Foundation (DFG); Deutscher Akademischer Austauschdienst (DAAD), GermanyDeutscher Akademischer Austausch Dienst (DAAD); European UnionEuropean Commission [824093]; Forschungszentrum Julich, Germany; Gesellschaft fur Schwerionenforschung GmbH (GSI), Darmstadt, GermanyHelmholtz Association; Helmholtz Gemeinschaft Deutscher Forschungszentren (HGF), Germany; INTAS, European Commission fund; Institute of High Energy Physics (IHEP)Chinese Academy of Sciences; Chinese Academy of Sciences, Beijing, ChinaChinese Academy of Sciences; Istituto Nazionale di Fisica Nucleare (INFN), ItalyIstituto Nazionale di Fisica Nucleare (INFN); Ministerio de Educacion y Ciencia (MEC)Spanish GovernmentEuropean Commission [FPA2006-12120-C03-02]; Polish Ministry of Science and Higher Education (MNiSW)Ministry of Science and Higher Education, Poland [2593/7, PR UE/2012/2]; National Science Centre (NCN), PolandNational Science Centre, Poland [DEC-2013/09/N/ST2/02180]; State Atomic Energy Corporation Rosatom, National Research Center Kurchatov Institute, Russia; Schweizerischer Nationalfonds zur Forderung der Wissenschaftlichen Forschung (SNF), Swiss; Science and Technology Facilities Council (STFC)UK Research & Innovation (UKRI)Science & Technology Facilities Council (STFC)Science and Technology Development Fund (STDF); British funding agency, Great Britain; Scientific and Technological Research Council of Turkey (TUBITAK)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [119F094]; Stefan Meyer Institut fur Subatomare Physik; Osterreichische Akademie der Wissenschaften, Wien, Austria; Swedish Research CouncilSwedish Research CouncilEuropean Commission; Knut and Alice Wallenberg Foundation, SwedenKnut & Alice Wallenberg Foundation ; We acknowledge the support of the Theory Advisory Group (ThAG) of PANDA and we value the various discussions that took place with the ThAG sharpening the physics programme of PANDA. We appreciate the comments and feedback we received from Gunnar Bali, Nora Brambilla, Stan Brodsky, Alexei Larionov, Horst Lenske, Stefan Leupold, Ulf Meissner, Simone Pacetti, Mark Strikman, and Lech Szymanowski.; We acknowledge financial support from the Bhabha Atomic Research Centre (BARC) and the Indian Institute of Technology Bombay, India; the Bundesministerium fur Bildung und Forschung (BMBF), Germany; the Carl-Zeiss-Stiftung 21-0563-2.8/122/1 and 21-05632.8/131/1, Mainz, Germany; the CNRS/IN2P3 and the Universite Paris-Sud, France; the Czech Ministry (MEYS) grants LM2015049, CZ.02.1.01/0.0/0.0/16 and 013/0001677, the Deutsche Forschungsgemeinschaft (DFG), Germany; the Deutscher Akademischer Austauschdienst (DAAD), Germany; the European Union'sHorizon 2020 research and innovation programme under grant agreement No 824093. the Forschungszentrum Julich, Germany; the Gesellschaft fur Schwerionenforschung GmbH (GSI), Darmstadt, Germany; the Helmholtz Gemeinschaft Deutscher Forschungszentren (HGF), Germany; the INTAS, European Commission funding; the Institute of High Energy Physics (IHEP) and the Chinese Academy of Sciences, Beijing, China; the Istituto Nazionale di Fisica Nucleare (INFN), Italy; theMinisterio de Educacion y Ciencia (MEC) under grant FPA2006-12120-C03-02; the Polish Ministry of Science and Higher Education (MNiSW) grant No. 2593/7, PR UE/2012/2, and the National Science Centre (NCN) DEC2013/09/N/ST2/02180, Poland; the State Atomic Energy Corporation Rosatom, National Research Center Kurchatov Institute, Russia; the Schweizerischer Nationalfonds zur Forderung der Wissenschaftlichen Forschung (SNF), Swiss; the Science and Technology FacilitiesCouncil (STFC), British funding agency, Great Britain; the Scientific and Technological Research Council of Turkey (TUBITAK) under the Grant No. 119F094 the Stefan Meyer Institut fur Subatomare Physik and the Osterreichische Akademie der Wissenschaften, Wien, Austria; the Swedish Research Council and the Knut and Alice Wallenberg Foundation, Sweden.