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Inclusive e+e− production in collisions of pions with protons and nuclei in the second resonance region of baryons

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arXiv 2023年

作者： Yassine, R. Abou Adamczewski-Musch, J. Arnold, O. Atomssa, E.T. Becker, M. Behnke, C. Berger-Chen, J.C. Blanco, A. Blume, C. Böhmer, M. Chlad, L. Chudoba, P. Ciepal, I. Deb, S. Deveaux, C. Dittert, D. Dreyer, J. Epple, E. Fabbietti, L. Fonte, P. Franco, C. Friese, J. Fröhlich, I. Förtsch, J. Galatyuk, T. Garzón, J.A. Gernhäuser, R. Greifenhagen, R. Grunwald, M. Gumberidze, M. Harabasz, S. Heinz, T. Hennino, T. Höhne, C. Hojeij, F. Holzmann, R. Idzik, M. Kämpfer, B. Kampert, K.-H. Kardan, B. Kedych, V. Koenig, I. Koenig, W. Kohls, M. Kolas, J. Kolb, B.W. Korcyl, G. Kornakov, G. Kotte, R. Krueger, W. Kugler, A. Kunz, T. Lalik, R. Lapidus, K. Linev, S. Linz, F. Lopes, L. Lorenz, M. Mahmoud, T. Maier, L. Malige, A. Markert, J. Maurus, S. Metag, V. Michel, J. Mihaylov, D.M. Mikhaylov, V. Molenda, A. Müntz, C. Münzer, R. Nabroth, M. Naumann, L. Nowakowski, K. Orlinski, J. Otto, J.-H. Parpottas, Y. Parschau, M. Pauly, C. Pechenov, V. Pechenova, O. Piasecki, K. Pietraszko, J. Povar, T. Proscinki, P. Prozorov, A. Przygoda, W. Pysz, K. Ramstein, B. Rathod, N. Rodriguez-Ramos, P. Rost, A. Rustamov, A. Salabura, P. Scheib, T. Schild, N. Schmidt-Sommerfeld, K. Schuldes, H. Schwab, E. Scozzi, F. Seck, F. Sellheim, P. Siebenson, J. Silva, L. Singh, U. Smyrski, J. Spataro, S. Spies, S. Stefaniak, M. Ströbele, H. Stroth, J. Sturm, C. Sumara, K. Svoboda, O. Szala, M. Tlusty, P. Traxler, M. Tsertos, H. Vazquez-Doce, O. Wagner, V. Weber, A.A. Wendisch, C. Wiebusch, M.G. Wirth, J. Wladyszewska, A. Zbroszczyk, H.P. Zherebtsova, E. Zielinski, M. Zumbruch, P. LIP-Laboratório de Instrumentação e Física Experimental de Partículas Coimbra3004-516 Portugal AGH University of Science and Technology Faculty of Physics and Applied Computer Science Kraków30-059 Poland Institute of Nuclear Physics Polish Academy of Sciences Kraków31342 Poland Smoluchowski Institute of Physics Jagiellonian University of Cracow Kraków30-059 Poland GSI Helmholtzzentrum für Schwerionenforschung GmbH Darmstadt64291 Germany Technische Universität Darmstadt Darmstadt64289 Germany Institut für Strahlenphysik Helmholtz-Zentrum Dresden-Rossendorf Dresden01314 Germany Institut für Kernphysik Goethe-Universität Frankfurt60438 Germany Excellence Cluster’Origin and Structure of the Universe’ Garching85748 Germany Physik Department E62 Technische Universität München Garching85748 Germany II.Physikalisches Institut Justus Liebig Universität Giessen Giessen35392 Germany Frederick University Nicosia1036 Cyprus Laboratoire de Physique des 2 infinis Irène Joliot-Curie Université Paris-Saclay CNRS-IN2P3. OrsayF-91405 France Nuclear Physics Institute The Czech Academy of Sciences Rez25068 Czech Republic LabCAF. F. Física Univ. de Santiago de Compostela Santiago de Compostela15706 Spain Uniwersytet Warszawski - Instytut Fizyki Doświadczalnej Warszawa02-093 Poland Warsaw University of Technology Warsaw00-662 Poland Bergische Universität Wuppertal Wuppertal42119 Germany Instituto Politécnico de Coimbra Instituto Superior de Engenharia de Coimbra Coimbra3030-199 Portugal Campus Darmstadt Darmstadt64390 Germany Technische Universität Dresden Dresden01062 Germany Campus Frankfurt Frankfurt am Main60438 Germany Charles University Faculty of Mathematics and Physics Prague12116 Czech Republic Czech Technical University in Prague Prague16000 Czech Republic Dipartimento di Fisica INFN Università di Torino Torino10125 Italy University of Wroclaw Wroclaw50-204 Poland

Inclusive e+e− production has been studied with HADES in π− + p, π− + C and π− + CH2 reactions, using the GSI pion beam at √sπp = 1.49 GeV. Invariant mass and transverse momentum distributions have been measured and reveal contributions from Dalitz decays of π0, η mesons and baryon resonances. The transverse momentum distributions are very sensitive to the underlying kinematics of the various processes. The baryon contribution exhibits a deviation up to a factor seven from the QED reference expected for the dielectron decay of a hypothetical point-like baryon with the production cross section constrained from the inverse γ n→ π− p reaction. The enhancement is attributed to a strong four-momentum squared dependence of the time-like electromagnetic transition form factors as suggested by Vector Meson Dominance (VMD). Two versions of the VMD, that differ in the photon-baryon coupling, have been applied in simulations and compared to data. VMD1 (or two-component VMD) assumes a coupling via the ρ meson and a direct coupling of the photon, while in VMD2 (or strict VMD) the coupling is only mediated via the ρ meson. The VMD2 model, frequently used in transport calculations for dilepton decays, is found to overestimate the measured dielectron yields, while a good description of the data can be obtained with the VMD1 model assuming no phase difference between the two amplitudes. Similar descriptions have also been obtained using a time-like baryon transition form factor model where the pion cloud plays the major role. © 2023, CC BY.

关键词： Photons

Systemic consequences of disorder in magnetically self-organized topological MnBi2Te4/(Bi2Te3)n superlattices

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arXiv 2021年

作者： Sitnicka, Joanna Park, Kyungwha Skupiński, Pawel Grasza, Krzysztof Reszka, Anna Sobczak, Kamil Borysiuk, Jolanta Adamus, Zbigniew Tokarczyk, Mateusz Avdonin, Andrei Fedorchenko, Irina Abaloszewa, Irina Turczyniak-Surdacka, Sylwia Olszowska, Natalia Kolodziej, Jacek Kowalski, Bogdan J. Deng, Haiming Konczykowski, Marcin Krusin-Elbaum, Lia Woloś, Agnieszka Faculty of Physics University of Warsaw ul. Pasteura 5 Warsaw02-093 Poland Department of Physics Virginia Tech 850 West Campus Drive BlacksburgVA24061 United States Institute of Physics Polish Academy of Sciences Aleja Lotników 32/46 WarsawPL-02668 Poland Faculty of Chemistry Biological and Chemical Research Centre University of Warsaw ul. Zwirki i Wigury 101 Warsaw02-089 Poland Kurnakov Institute of General and Inorganic Chemistry Russian Academy of Sciences Leninskii prosp. 31 Moscow117901 Russia National Synchrotron Radiation Centre SOLARIS Jagiellonian University ul. Czerwone Maki 98 Cracow30-392 Poland Faculty of Physics Astronomy and Applied Computer Science Jagiellonian University ul. prof. Stanislawa Lojasiewicza 11 Cracow30-348 Poland Department of Physics The City College of New York–CUNY 85 St. Nicholas Terrace New YorkNY10027 United States Laboratoire des Solides Irradiés CEA/DRF/lRAMIS Ecole Polytechnique CNRS Institut Polytechnique de Paris PalaiseauF-91128 France

MnBi2Te4/(Bi2Te3)n materials system has recently generated strong interest as a natural platform for realization of the quantum anomalous Hall (QAH) state. The system is magnetically much better ordered than substitutionally doped materials, however, the detrimental effects of certain disorders are becoming increasingly acknowledged. Here, from compiling structural, compositional, and magnetic metrics of disorder in ferromagnetic MnBi2Te4/(Bi2Te3)n it is found that migration of Mn between MnBi2Te4 septuple layers (SLs) and otherwise non-magnetic Bi2Te3 quintuple layers (QLs) has systemic consequences - it induces ferromagnetic coupling of Mn-depleted SLs with Mn-doped QLs, seen in ferromagnetic resonance as an acoustic and optical resonance mode of the two coupled spin subsystems. Even for a large SL separation (n 4 QLs) the structure cannot be considered as a stack of uncoupled two-dimensional layers. Angle-resolved photoemission spectroscopy and density functional theory studies show that Mn disorder within an SL causes delocalization of electron wave functions and a change of the surface band structure as compared to the ideal MnBi2Te4/(Bi2Te3)n. These findings highlight the critical importance of inter- and intra-SL disorder towards achieving new QAH platforms as well as exploring novel axion physics in intrinsic topological *** Codes 00A79 © 2021, CC BY.

关键词： Ferromagnetic materials

A survey of user expectations and tool limitations in collaborative scientific authoring and reviewing

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arXiv 2018年

作者： Sadeghi, Afshin Ansari, Mahdi Jaberzadeh Wilm, Johannes Lange, Christoph Institute for Applied Computer Science University of Bonn Germany Fraunhofer Institute f. Intelligent Analysis and Information Systems IAIS Germany GESIS Leibniz Institute for the Social Sciences Germany

Collaborative scientific authoring is increasingly being supported by software tools. Traditionally, desktop-based authoring tools had the most advanced editing features, allowed for more formatting options, and included more import/export filters. Web-based tools have excelled in their collaboration support. Recently, developers on both sides have been trying to close this gap by extending desktop-based tools to better support collaboration and by making web-based tools richer in functionality. To verify to what extent these developments actually meet the needs of researchers, we gathered precise requirements towards better tool support for scientific authoring and reviewing workflows by interviewing 213 users and studying a corpus of 27 documents. We present the design of the survey and interpret its results. The conclusion is that WYSIWYG and offline desktop authoring tools continue to be more popular among academics than text-based and online editors. Copyright © 2018, The Authors. All rights reserved.

关键词： Surveys

On the existence of four or more curved foldings with common creases and crease patterns

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arXiv 2019年

作者： Honda, A. Naokawa, K. Saji, K. Umehara, M. Yamada, K. Department of Applied Mathematics Faculty of Engineering Yokohama National University 79-5 Tokiwadai Hodogaya Yokohama240-8501 Japan Department of Computer Science Faculty of Applied Information Science Hiroshima Institute of Technology 2-1-1 Miyake Saeki Hiroshima731-5193 Japan Department of Mathematics Faculty of Science Kobe University Rokko Kobe657-8501 Department of Mathematical and Computing Sciences Tokyo Institute of Technology Tokyo152-8552 Japan Department of Mathematics Tokyo Institute of Technology Tokyo152-8551 Japan

Consider a curve Γ in a domain D in the plane R2. Thinking of D as a piece of paper, one can make a curved folding in the Euclidean space R3. This can be expressed as the image of an ‘origami map’ : D → R3 such that Γ is the singular set of , the word ‘origami’ coming from the Japanese term for paper folding. We call the singular set image C:= (Γ) the crease of and the singular set Γ the crease pattern of . We are interested in the number of origami maps whose creases and crease patterns are C and Γ respectively. Two such possibilities have been known. In the previous authors’ work, two other new possibilities and an explicit example with four such non-congruent distinct curved foldings were established. In this paper, we show that the case of four mutually non-congruent curved foldings with the same crease and crease pattern occurs if and only if Γ and C do not admit any symmetries. Moreover, when C is a closed curve, we show that there are infinitely many distinct possibilities for curved foldings with the same crease and crease pattern, in *** Codes 53A05, 51M15 Copyright © 2019, The Authors. All rights reserved.

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Dynamics of nanosecond laser pulse propagation and of associated instabilities in a magnetized underdense plasma

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arXiv 2022年

作者： Yao, W. Higginson, A. Marquès, J.-R. Antici, P. Béard, J. Burdonov, K. Borghesi, M. Castan, A. Ciardi, A. Coleman, B. Chen, S.N. D'Humières, E. Gangolf, T. Gremillet, L. Khiar, B. Lancia, L. Loiseau, P. Ribeyre, X. Soloviev, A. Starodubtsev, M. Wang, Q. Fuchs, J. Luli Cnrs Cea Upmc Univ Paris 06 : Sorbonne Université Ecole Polytechnique Institut Polytechnique de Paris PalaiseauF-91128 cedex France Sorbonne Université Observatoire de Paris Université Psl CNRS Lerma ParisF-75005 France Center for Energy Research University of California San Diego 9500 Gilman Drive La Jolla CA92093-0417 United States INRS-EMT 1650 boul Lionel-Boulet VarennesQCJ3X 1S2 Canada Cnrs Lncmi Univ Toulouse 3 Insa Toulouse Univ Grenoble Alpes Emfl Toulouse31400 France Jiht Russian Academy of Sciences Moscow125412 Russia School of Mathematics and Physics The Queen's University Belfast Belfast United Kingdom Cea Dam Dif F-91297 France 'Horia Hulubei' National Institute for Physics and Nuclear Engineering Bucharest-MagureleRO-077125 Romania University of Bordeaux Celia Cnrs Cea Umr 5107 TalenceF-33405 France Université Paris-Saclay Cea Lmce Bruyères-le-Châtel91680 France Palaiseau91123 France IAP-RAS Nizhny Novgorod Russia Institute of Applied Physics and Computational Mathematics Beijing100094 China Department of Electrical and Computer Engineering University of Alberta 9211 116 St. NW EdmontonABT6G 1H9 Canada

The propagation and energy coupling of intense laser beams in plasmas are critical issues in laser-driven inertial confinement fusion. Applying magnetic fields to such a setup has been evoked to enhance fuel confinement and heating, and mitigate laser energy losses. Here we report on experimental measurements demonstrating improved transmission and increased smoothing of a high-power laser beam propagating in an underdense magnetized plasma. We also measure enhanced backscattering, which our simulations show is due to hot electrons confinement, thus leading to reduced target preheating. © 2022, CC BY-NC-SA.

关键词： Hot electrons

Iridium 5d-electron driven superconductivity in ThIr3

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arXiv 2019年

作者： Górnicka, Karolina Das, Debarchan Gutowska, Sylwia Wiendlocha, Bartlomiej Winiarski, Michal J. Klimczuk, Tomasz Kaczorowski, Dariusz Faculty of Applied Physics and Mathematics Gdansk University of Technology ul. Narutowicza 11/12 Gdańsk80-233 Poland Institute of Low Temperature and Structure Research Polish Academy of Sciences P.O.Box 1410 Wroclaw 250-590 Poland Faculty of Physics and Applied Computer Science AGH University of Science and Technology Aleja Mickiewicza 30 Kraków30-059 Poland

Polycrystalline sample of superconducting ThIr3 was obtained by arc-melting Th and Ir metals. Powder x-ray diffraction revealed that the compound crystalizes in a rhombohedral crystal structure (R-3m, s.g. #166) with the lattice parameters: a = 5.3414(2) Å and c = 26.432(1) Å. Normal and superconducting states were studied by magnetic susceptibility, electrical resistivity and heat capacity measurements. The results showed that ThIr3 is a type II superconductor (Ginzburg-Landau parameter κ = 33) with the critical temperature Tc = 4.41 K. The heat capacity data yielded the Sommerfeld coefficient γ = 17.6 mJ mol-1 K-2 and the Debye temperature ΘD= 169 K. The ratio ΔC/(γTc) = 1.6, where ΔC stands for the specific heat jump at Tc , and the electron–phonon coupling constant λe-p= 0.74 suggest that ThIr3 is a moderate-strength superconductor. The experimental studies were supplemented by band structure calculations, which indicated that the superconductivity in ThIr3 is governed mainly by 5d states of iridium. The significantly smaller band-structure value of Sommerfeld coefficient as well as the experimentally observed quadratic temperature dependence of resistivity and enhanced magnetic susceptibility suggest presence of electronic interactions in the system, which compete with superconductivity. Copyright © 2019, The Authors. All rights reserved.

关键词： Temperature distribution

Characterization of the breakup channel in the asymmetric systems Ca40,48+C12 at 25 and 40 MeV/nucleon

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Physical Review C 2023年第4期107卷 044607-044607页

作者： S. Piantelli G. Casini P. Ottanelli L. Baldesi S. Barlini B. Borderie R. Bougault A. Camaiani A. Chbihi C. Ciampi J. A. Dueñas D. Fabris Q. Fable J. D. Frankland C. Frosin F. Gramegna D. Gruyer B. Hong A. Kordyasz T. Kozik M. J. Kweon J. Lemarié N. LeNeindre I. Lombardo O. Lopez T. Marchi K. Mazurek S. H. Nam M. Pârlog J. Park G. Pasquali G. Poggi A. Rebillard-Soulié A. A. Stefanini S. Upadhyaya S. Valdré G. Verde E. Vient M. Vigilante INFN Sezione di Firenze I-50019 Sesto Fiorentino Italy Dipartimento di Fisica Università di Firenze I-50019 Sesto Fiorentino Italy Université Paris-Saclay CNRS/IN2P3 IJCLab F-91405 Orsay France Normandie Université ENSICAEN UNICAEN CNRS/IN2P3 LPC Caen F-14000 Caen France Instituut voor Kern-en Stralingsfysica KU Leuven B-3001 Heverlee Belgium GANIL CEA/DRF-CNRS/IN2P3 F-14076 Caen France Departamento de Ingenierá Eléctrica y Centro de Estudios Avanzados en Física Matemáticas y Computación Universidad de Huelva 21007 Huelva Spain INFN Sezione di Padova I-35131 Padova Italy Laboratoire des 2 Infinis - Toulouse (L2IT-IN2P3) Université de Toulouse CNRS UPS F-31062 Toulouse Cedex 9 France INFN Laboratori Nazionali di Legnaro I-35020 Legnaro Italy Center for Extreme Nuclear Matters (CENuM) Korea University Seoul 02841 Republic of Korea Department of Physics Korea University Seoul 02841 Republic of Korea Heavy Ion Laboratory University of Warsaw PL-02093 Warszawa Poland Faculty of Physics Astronomy and Applied Computer Science Jagiellonian University PL-30348 Kraków Poland Department of Physics Inha University Incheon 22212 Republic of Korea INFN Sezione di Catania I-95123 Catania Italy Dipartimento di Fisica e Astronomia Università di Catania I-95123 Catania Italy Institute of Nuclear Physics Polish Academy of Sciences PL-31342 Kraków Poland “Horia Hulubei” National Institute of Physics and Nuclear Engineering (IFIN-HH) RO-077125 Bucharest Magurele Romania Dipartimento di Fisica Università di Napoli I-80126 Napoli Italy INFN Sezione di Napoli I-80126 Napoli Italy

An analysis of the asymmetric reactions Ca40,48+C12 at 25 and 40 MeV/nucleon is presented. Data were collected with six modules of the FAZIA array. The analysis is focused on the breakup channel of sources produced in dissipative collisions, partially corresponding to incomplete fusion processes. The study was performed both on detected fragments and on some resonances reconstructed by means of particle-fragment correlations, with a focus on the evolution of the breakup channel with the beam energy and the neutron content of the system, looking in particular at the relative velocity between the breakup fragments. Results show that also carbon fragments reconstructed by means of particle correlations can be in large part interpreted as the light partner of a scission.

关键词： Low & intermediate energy heavy-ion reactions Nuclear reactions

Cuspidal edges with the same first fundamental forms along a common closed space curve

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arXiv 2019年

作者： Honda, A. Naokawa, K. Saji, K. Umehara, M. Yamada, K. Department of Applied Mathematics Faculty of Engineering Yokohama National University 79-5 Tokiwadai Hodogaya Yokohama240-8501 Japan Department of Computer Science Faculty of Applied Information Science Hiroshima Institute of Technology 2-1-1 Miyake Saeki Hiroshima731-5193 Japan Department of Mathematics Faculty of Science Kobe University Rokko Kobe657-8501 Japan Department of Mathematical and Computing Sciences Tokyo Institute of Technology Tokyo152-8552 Japan Department of Mathematics Tokyo Institute of Technology Tokyo152-8551 Japan

Along an embedded space curve C, local existence of four distinct cuspidal edges with the same first fundamental forms was shown in the authors' previous work. Here, if C is closed, we show the existence of infinitely many cuspidal edges with the same first fundamental forms. Copyright © 2019, The Authors. All rights reserved.

关键词： Wavefronts

Correction: Exergame (ExerG)-Based Physical-Cognitive Training for Rehabilitation in Adults With Motor and Balance Impairments: Usability Study

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JMIR serious games 2025年 13卷 e73405页

作者： Silvia Herren Barbara Seebacher Sarah Mildner Yanick Riederer Ulrike Pachmann Nija Sonja Böckler Stephan Niedecken Sabrina Alicia Sgandurra Leo Bonati Isabella Hotz Alexandra Schättin Roman Jurt Christian Brenneis Katharina Lenfert Frank Behrendt Stefan Schmidlin Lennart Nacke Corina Schuster-Amft Anna Lisa Martin-Niedecken Research Department Reha Rheinfelden Rheinfelden Switzerland. Department of Rehabilitation Science Clinic for Rehabilitation Muenster Gröben 700 Muenster 6232 Austria 43 533720004 ext 6205. Clinical Department of Neurology Medical University of Innsbruck Innsbruck Austria. Karl Landsteiner Institute for Interdisciplinary Rehabilitation Research Muenster Austria. Sphery Ltd Zurich Switzerland. VASCage - Centre on Clinical Stroke Research Innsbruck Austria. Department of Design Institute for Design Research Zurich University of the Arts Zurich Switzerland. English Language and Literature Faculty of Arts University of Waterloo Waterloo ON Canada. Stroke Center and Department of Neurology University Hospital Basel Basel Switzerland. Department of Clinical Research University of Basel Basel Switzerland. Department of Neurology Clinic for Rehabilitation Muenster Muenster Austria. School of Engineering and Computer Science Bern University of Applied Sciences Burgdorf Switzerland. HCI Games Group Stratford School of Interaction Design and Business University of Waterloo Waterloo ON Canada. Department for Sport Exercise and Health University of Basel Basel Switzerland.