Physics Letters B (Jun 2018)
Σ0 production in proton nucleus collisions near threshold
- J. Adamczewski-Musch,
- G. Agakishiev,
- O. Arnold,
- E.T. Atomssa,
- C. Behnke,
- J.C. Berger-Chen,
- J. Biernat,
- A. Blanco,
- C. Blume,
- M. Böhmer,
- P. Bordalo,
- S. Chernenko,
- C. Deveaux,
- A. Dybczak,
- E. Epple,
- L. Fabbietti,
- O. Fateev,
- P. Fonte,
- C. Franco,
- J. Friese,
- I. Fröhlich,
- T. Galatyuk,
- J.A. Garzón,
- R. Gernhäuser,
- K. Gill,
- M. Golubeva,
- F. Guber,
- M. Gumberidze,
- S. Harabasz,
- T. Hennino,
- S. Hlavac,
- C. Höhne,
- R. Holzmann,
- A. Ierusalimov,
- A. Ivashkin,
- M. Jurkovic,
- B. Kämpfer,
- T. Karavicheva,
- B. Kardan,
- I. Koenig,
- W. Koenig,
- B.W. Kolb,
- G. Korcyl,
- G. Kornakov,
- R. Kotte,
- A. Krása,
- E. Krebs,
- H. Kuc,
- A. Kugler,
- T. Kunz,
- A. Kurepin,
- A. Kurilkin,
- P. Kurilkin,
- V. Ladygin,
- R. Lalik,
- K. Lapidus,
- A. Lebedev,
- L. Lopes,
- M. Lorenz,
- T. Mahmoud,
- L. Maier,
- S. Maurus,
- A. Mangiarotti,
- J. Markert,
- V. Metag,
- J. Michel,
- C. Müntz,
- R. Münzer,
- L. Naumann,
- M. Palka,
- Y. Parpottas,
- V. Pechenov,
- O. Pechenova,
- V. Petousis,
- J. Pietraszko,
- W. Przygoda,
- S. Ramos,
- B. Ramstein,
- L. Rehnisch,
- A. Reshetin,
- A. Rost,
- A. Rustamov,
- A. Sadovsky,
- P. Salabura,
- T. Scheib,
- K. Schmidt-Sommerfeld,
- H. Schuldes,
- P. Sellheim,
- J. Siebenson,
- L. Silva,
- Yu.G. Sobolev,
- S. Spataro,
- H. Ströbele,
- J. Stroth,
- P. Strzempek,
- C. Sturm,
- O. Svoboda,
- A. Tarantola,
- K. Teilab,
- P. Tlusty,
- M. Traxler,
- H. Tsertos,
- T. Vasiliev,
- V. Wagner,
- C. Wendisch,
- J. Wirth,
- J. Wüstenfeld,
- Y. Zanevsky,
- P. Zumbruch
Affiliations
- J. Adamczewski-Musch
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- G. Agakishiev
- Joint Institute of Nuclear Research, 141980 Dubna, Russia
- O. Arnold
- Excellence Cluster ‘Origin and Structure of the Universe’, 85748 Garching, Germany; Physik Department E62, Technische Universität München, 85748 Garching, Germany
- E.T. Atomssa
- Institut de Physique Nucléaire (UMR 8608), CNRS/IN2P3-Université Paris Sud, F-91406 Orsay Cedex, France
- C. Behnke
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
- J.C. Berger-Chen
- Excellence Cluster ‘Origin and Structure of the Universe’, 85748 Garching, Germany; Physik Department E62, Technische Universität München, 85748 Garching, Germany
- J. Biernat
- Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland
- A. Blanco
- LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal
- C. Blume
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
- M. Böhmer
- Physik Department E62, Technische Universität München, 85748 Garching, Germany
- P. Bordalo
- LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal
- S. Chernenko
- Joint Institute of Nuclear Research, 141980 Dubna, Russia
- C. Deveaux
- II.Physikalisches Institut, Justus Liebig Universität Giessen, 35392 Giessen, Germany
- A. Dybczak
- Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland
- E. Epple
- Excellence Cluster ‘Origin and Structure of the Universe’, 85748 Garching, Germany; Physik Department E62, Technische Universität München, 85748 Garching, Germany
- L. Fabbietti
- Excellence Cluster ‘Origin and Structure of the Universe’, 85748 Garching, Germany; Physik Department E62, Technische Universität München, 85748 Garching, Germany; Corresponding authors.
- O. Fateev
- Joint Institute of Nuclear Research, 141980 Dubna, Russia
- P. Fonte
- LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal
- C. Franco
- LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal
- J. Friese
- Physik Department E62, Technische Universität München, 85748 Garching, Germany
- I. Fröhlich
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
- T. Galatyuk
- Technische Universität Darmstadt, 64289 Darmstadt, Germany
- J.A. Garzón
- LabCAF. F. Física, Univ. de Santiago de Compostela, 15706 Santiago de Compostela, Spain
- R. Gernhäuser
- Physik Department E62, Technische Universität München, 85748 Garching, Germany
- K. Gill
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
- M. Golubeva
- Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia
- F. Guber
- Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia
- M. Gumberidze
- Technische Universität Darmstadt, 64289 Darmstadt, Germany
- S. Harabasz
- Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland; Technische Universität Darmstadt, 64289 Darmstadt, Germany
- T. Hennino
- Institut de Physique Nucléaire (UMR 8608), CNRS/IN2P3-Université Paris Sud, F-91406 Orsay Cedex, France
- S. Hlavac
- Institute of Physics, Slovak Academy of Sciences, 84228 Bratislava, Slovakia
- C. Höhne
- II.Physikalisches Institut, Justus Liebig Universität Giessen, 35392 Giessen, Germany
- R. Holzmann
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- A. Ierusalimov
- Joint Institute of Nuclear Research, 141980 Dubna, Russia
- A. Ivashkin
- Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia
- M. Jurkovic
- Physik Department E62, Technische Universität München, 85748 Garching, Germany
- B. Kämpfer
- Institut für Strahlenphysik, Helmholtz-Zentrum Dresden-Rossendorf, 01314 Dresden, Germany
- T. Karavicheva
- Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia
- B. Kardan
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
- I. Koenig
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- W. Koenig
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- B.W. Kolb
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- G. Korcyl
- Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland
- G. Kornakov
- Technische Universität Darmstadt, 64289 Darmstadt, Germany
- R. Kotte
- Institut für Strahlenphysik, Helmholtz-Zentrum Dresden-Rossendorf, 01314 Dresden, Germany
- A. Krása
- Nuclear Physics Institute, Academy of Sciences of Czech Republic, 25068 Rez, Czech Republic
- E. Krebs
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
- H. Kuc
- Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland; Institut de Physique Nucléaire (UMR 8608), CNRS/IN2P3-Université Paris Sud, F-91406 Orsay Cedex, France
- A. Kugler
- Nuclear Physics Institute, Academy of Sciences of Czech Republic, 25068 Rez, Czech Republic
- T. Kunz
- Physik Department E62, Technische Universität München, 85748 Garching, Germany; Corresponding authors.
- A. Kurepin
- Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia
- A. Kurilkin
- Joint Institute of Nuclear Research, 141980 Dubna, Russia
- P. Kurilkin
- Joint Institute of Nuclear Research, 141980 Dubna, Russia
- V. Ladygin
- Joint Institute of Nuclear Research, 141980 Dubna, Russia
- R. Lalik
- Excellence Cluster ‘Origin and Structure of the Universe’, 85748 Garching, Germany; Physik Department E62, Technische Universität München, 85748 Garching, Germany
- K. Lapidus
- Excellence Cluster ‘Origin and Structure of the Universe’, 85748 Garching, Germany; Physik Department E62, Technische Universität München, 85748 Garching, Germany
- A. Lebedev
- Institute of Theoretical and Experimental Physics, 117218 Moscow, Russia
- L. Lopes
- LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal
- M. Lorenz
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
- T. Mahmoud
- II.Physikalisches Institut, Justus Liebig Universität Giessen, 35392 Giessen, Germany
- L. Maier
- Physik Department E62, Technische Universität München, 85748 Garching, Germany
- S. Maurus
- Excellence Cluster ‘Origin and Structure of the Universe’, 85748 Garching, Germany; Physik Department E62, Technische Universität München, 85748 Garching, Germany
- A. Mangiarotti
- LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal
- J. Markert
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
- V. Metag
- II.Physikalisches Institut, Justus Liebig Universität Giessen, 35392 Giessen, Germany
- J. Michel
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
- C. Müntz
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
- R. Münzer
- Excellence Cluster ‘Origin and Structure of the Universe’, 85748 Garching, Germany; Physik Department E62, Technische Universität München, 85748 Garching, Germany
- L. Naumann
- Institut für Strahlenphysik, Helmholtz-Zentrum Dresden-Rossendorf, 01314 Dresden, Germany
- M. Palka
- Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland
- Y. Parpottas
- Department of Physics, University of Cyprus, 1678 Nicosia, Cyprus
- V. Pechenov
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- O. Pechenova
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
- V. Petousis
- Department of Physics, University of Cyprus, 1678 Nicosia, Cyprus
- J. Pietraszko
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- W. Przygoda
- Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland
- S. Ramos
- LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal
- B. Ramstein
- Institut de Physique Nucléaire (UMR 8608), CNRS/IN2P3-Université Paris Sud, F-91406 Orsay Cedex, France
- L. Rehnisch
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
- A. Reshetin
- Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia
- A. Rost
- Technische Universität Darmstadt, 64289 Darmstadt, Germany
- A. Rustamov
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
- A. Sadovsky
- Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia
- P. Salabura
- Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland
- T. Scheib
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
- K. Schmidt-Sommerfeld
- Physik Department E62, Technische Universität München, 85748 Garching, Germany
- H. Schuldes
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
- P. Sellheim
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
- J. Siebenson
- Physik Department E62, Technische Universität München, 85748 Garching, Germany
- L. Silva
- LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal
- Yu.G. Sobolev
- Nuclear Physics Institute, Academy of Sciences of Czech Republic, 25068 Rez, Czech Republic
- S. Spataro
- Institute of Physics, Slovak Academy of Sciences, 84228 Bratislava, Slovakia; LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal; Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland; GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany; Technische Universität Darmstadt, 64289 Darmstadt, Germany; Institut für Strahlenphysik, Helmholtz-Zentrum Dresden-Rossendorf, 01314 Dresden, Germany; Joint Institute of Nuclear Research, 141980 Dubna, Russia; Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany; Excellence Cluster ‘Origin and Structure of the Universe’, 85748 Garching, Germany; Physik Department E62, Technische Universität München, 85748 Garching, Germany; II.Physikalisches Institut, Justus Liebig Universität Giessen, 35392 Giessen, Germany; Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia; Institute of Theoretical and Experimental Physics, 117218 Moscow, Russia; Department of Physics, University of Cyprus, 1678 Nicosia, Cyprus; Institut de Physique Nucléaire (UMR 8608), CNRS/IN2P3-Université Paris Sud, F-91406 Orsay Cedex, France; Nuclear Physics Institute, Academy of Sciences of Czech Republic, 25068 Rez, Czech Republic; LabCAF. F. Física, Univ. de Santiago de Compostela, 15706 Santiago de Compostela, Spain
- H. Ströbele
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
- J. Stroth
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany; GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- P. Strzempek
- Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland
- C. Sturm
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- O. Svoboda
- Nuclear Physics Institute, Academy of Sciences of Czech Republic, 25068 Rez, Czech Republic
- A. Tarantola
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
- K. Teilab
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
- P. Tlusty
- Nuclear Physics Institute, Academy of Sciences of Czech Republic, 25068 Rez, Czech Republic
- M. Traxler
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- H. Tsertos
- Department of Physics, University of Cyprus, 1678 Nicosia, Cyprus
- T. Vasiliev
- Joint Institute of Nuclear Research, 141980 Dubna, Russia
- V. Wagner
- Nuclear Physics Institute, Academy of Sciences of Czech Republic, 25068 Rez, Czech Republic
- C. Wendisch
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- J. Wirth
- Excellence Cluster ‘Origin and Structure of the Universe’, 85748 Garching, Germany; Physik Department E62, Technische Universität München, 85748 Garching, Germany
- J. Wüstenfeld
- Institut für Strahlenphysik, Helmholtz-Zentrum Dresden-Rossendorf, 01314 Dresden, Germany
- Y. Zanevsky
- Joint Institute of Nuclear Research, 141980 Dubna, Russia
- P. Zumbruch
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- Journal volume & issue
-
Vol. 781
pp. 735 – 740
Abstract
The production of Σ0 baryons in the nuclear reaction p (3.5 GeV) + Nb (corresponding to sNN=3.18 GeV) is studied with the detector set-up HADES at GSI, Darmstadt. Σ0s were identified via the decay Σ0→Λγ with subsequent decays Λ→pπ− in coincidence with a e+e− pair from either external (γ→e+e−) or internal (Dalitz decay γ⁎→e+e−) gamma conversions. The differential Σ0 cross section integrated over the detector acceptance, i.e. the rapidity interval 0.5<y<1.1, has been extracted as ΔσΣ0=2.3±(0.2)stat±(−0.6+0.6)sys±(0.2)norm mb, yielding the inclusive production cross section in full phase space σΣ0total=5.8±(0.5)stat±(−1.4+1.4)sys±(0.6)norm±(1.7)extrapol mb by averaging over different extrapolation methods. The Λall/Σ0 ratio within the HADES acceptance is equal to 2.3±(0.2)stat±(−0.6+0.6)sys. The obtained rapidity and momentum distributions are compared to transport model calculations. The Σ0 yield agrees with the statistical model of particle production in nuclear reactions. Keywords: Hyperons, Strangeness, Proton, Nucleus
