Physics Letters B (Mar 2020)
Search for η mesic 3He with the WASA-at-COSY facility in the pd→3He2γ and pd→3He6γ reactions
- P. Adlarson,
- W. Augustyniak,
- W. Bardan,
- M. Bashkanov,
- S.D. Bass,
- M. Berłowski,
- A. Bondar,
- M. Büscher,
- H. Calén,
- I. Ciepał,
- H. Clement,
- E. Czerwiński,
- R. Engels,
- A. Erven,
- W. Erven,
- W. Eyrich,
- P. Fedorets,
- K. Föhl,
- K. Fransson,
- F. Goldenbaum,
- A. Goswami,
- K. Grigoryev,
- L. Heijkenskjöld,
- V. Hejny,
- S. Hirenzaki,
- L. Jarczyk,
- T. Johansson,
- B. Kamys,
- N.G. Kelkar,
- G. Kemmerling,
- A. Khreptak,
- D.A. Kirillov,
- S. Kistryn,
- H. Kleines,
- B. Kłos,
- W. Krzemień,
- P. Kulessa,
- A. Kupść,
- K. Lalwani,
- D. Lersch,
- B. Lorentz,
- A. Magiera,
- R. Maier,
- P. Marciniewski,
- B. Mariański,
- H.-P. Morsch,
- P. Moskal,
- H. Ohm,
- W. Parol,
- E. Perez del Rio,
- N.M. Piskunov,
- D. Prasuhn,
- D. Pszczel,
- K. Pysz,
- J. Ritman,
- A. Roy,
- O. Rundel,
- S. Sawant,
- S. Schadmand,
- I. Schätti–Ozerianska,
- T. Sefzick,
- V. Serdyuk,
- B. Shwartz,
- T. Skorodko,
- M. Skurzok,
- J. Smyrski,
- V. Sopov,
- R. Stassen,
- J. Stepaniak,
- E. Stephan,
- G. Sterzenbach,
- H. Stockhorst,
- H. Ströher,
- A. Szczurek,
- A. Trzciński,
- M. Wolke,
- A. Wrońska,
- P. Wüstner,
- A. Yamamoto,
- J. Zabierowski,
- M.J. Zieliński,
- J. Złomańczuk,
- P. Żuprański,
- M. Żurek
Affiliations
- P. Adlarson
- Division of Nuclear Physics, Department of Physics and Astronomy, Uppsala University, Box 516, 75120 Uppsala, Sweden
- W. Augustyniak
- Department of Nuclear Physics, National Centre for Nuclear Research, ul. Pasteura 7, 02-093, Warsaw, Poland
- W. Bardan
- Institute of Physics, Jagiellonian University, prof. Stanisława Łojasiewicza 11, 30-348 Kraków, Poland
- M. Bashkanov
- School of Physics and Astronomy, University of Edinburgh, James Clerk Maxwell Building, Peter Guthrie Tait Road, Edinburgh EH9 3FD, United Kingdom of Great Britain and Northern Ireland
- S.D. Bass
- Institute of Physics, Jagiellonian University, prof. Stanisława Łojasiewicza 11, 30-348 Kraków, Poland; Kitzbühel Centre for Physics, Kitzbühel, Austria
- M. Berłowski
- High Energy Physics Department, National Centre for Nuclear Research, ul. Pasteura 7, 02-093, Warsaw, Poland
- A. Bondar
- Budker Institute of Nuclear Physics of SB RAS, 11 akademika Lavrentieva prospect, Novosibirsk, 630090, Russia; Novosibirsk State University, 2 Pirogova Str., Novosibirsk, 630090, Russia
- M. Büscher
- Peter Grünberg Institut, PGI–6 Elektronische Eigenschaften, Forschungszentrum Jülich, 52425 Jülich, Germany; Institut für Laser– und Plasmaphysik, Heinrich–Heine Universität Düsseldorf, Universitätsstr. 1, 40225 Düsseldorf, Germany
- H. Calén
- Division of Nuclear Physics, Department of Physics and Astronomy, Uppsala University, Box 516, 75120 Uppsala, Sweden
- I. Ciepał
- The Henryk Niewodniczański Institute of Nuclear Physics, Polish Academy of Sciences, 152 Radzikowskiego St, 31-342 Kraków, Poland
- H. Clement
- Physikalisches Institut, Eberhard–Karls–Universität Tübingen, Auf der Morgenstelle 14, 72076 Tübingen, Germany; Kepler Center für Astro– und Teilchenphysik, Physikalisches Institut der Universität Tübingen, Auf der Morgenstelle 14, 72076 Tübingen, Germany
- E. Czerwiński
- Institute of Physics, Jagiellonian University, prof. Stanisława Łojasiewicza 11, 30-348 Kraków, Poland
- R. Engels
- Institut für Kernphysik, Forschungszentrum Jülich, 52425 Jülich, Germany
- A. Erven
- Zentralinstitut für Engineering, Elektronik und Analytik, Forschungszentrum Jülich, 52425 Jülich, Germany
- W. Erven
- Zentralinstitut für Engineering, Elektronik und Analytik, Forschungszentrum Jülich, 52425 Jülich, Germany
- W. Eyrich
- Physikalisches Institut, Friedrich–Alexander–Universität Erlangen–Nürnberg, Erwin–Rommel-Str. 1, 91058 Erlangen, Germany
- P. Fedorets
- Institut für Kernphysik, Forschungszentrum Jülich, 52425 Jülich, Germany; Institute for Theoretical and Experimental Physics named by A.I. Alikhanov of National Research Centre “Kurchatov Institute”, 25 Bolshaya Cheremushkinskaya, Moscow, 117218, Russia
- K. Föhl
- II. Physikalisches Institut, Justus–Liebig–Universität Gießen, Heinrich–Buff–Ring 16, 35392 Giessen, Germany
- K. Fransson
- Division of Nuclear Physics, Department of Physics and Astronomy, Uppsala University, Box 516, 75120 Uppsala, Sweden
- F. Goldenbaum
- Institut für Kernphysik, Forschungszentrum Jülich, 52425 Jülich, Germany
- A. Goswami
- Institut für Kernphysik, Forschungszentrum Jülich, 52425 Jülich, Germany; Department of Physics, Indian Institute of Technology Indore, Khandwa Road, Simrol, Indore 453552, Madhya Pradesh, India
- K. Grigoryev
- Institut für Kernphysik, Forschungszentrum Jülich, 52425 Jülich, Germany; High Energy Physics Division, Petersburg Nuclear Physics Institute named by B.P. Konstantinov of National Research Centre “Kurchatov Institute”, 1 mkr. Orlova roshcha, Leningradskaya Oblast, Gatchina, 188300, Russia
- L. Heijkenskjöld
- Division of Nuclear Physics, Department of Physics and Astronomy, Uppsala University, Box 516, 75120 Uppsala, Sweden
- V. Hejny
- Institut für Kernphysik, Forschungszentrum Jülich, 52425 Jülich, Germany
- S. Hirenzaki
- Department of Physics, Nara Women's University, Nara 630-8506, Japan
- L. Jarczyk
- Institute of Physics, Jagiellonian University, prof. Stanisława Łojasiewicza 11, 30-348 Kraków, Poland
- T. Johansson
- Division of Nuclear Physics, Department of Physics and Astronomy, Uppsala University, Box 516, 75120 Uppsala, Sweden
- B. Kamys
- Institute of Physics, Jagiellonian University, prof. Stanisława Łojasiewicza 11, 30-348 Kraków, Poland
- N.G. Kelkar
- Departamento de Fisica, Universidad de los Andes, Cra. 1E, 18A–10, Bogotá, Colombia
- G. Kemmerling
- Zentralinstitut für Engineering, Elektronik und Analytik, Forschungszentrum Jülich, 52425 Jülich, Germany
- A. Khreptak
- Institute of Physics, Jagiellonian University, prof. Stanisława Łojasiewicza 11, 30-348 Kraków, Poland
- D.A. Kirillov
- Veksler and Baldin Laboratory of High Energiy Physics, Joint Institute for Nuclear Physics, 6 Joliot–Curie, Dubna, 141980, Russia
- S. Kistryn
- Institute of Physics, Jagiellonian University, prof. Stanisława Łojasiewicza 11, 30-348 Kraków, Poland
- H. Kleines
- Zentralinstitut für Engineering, Elektronik und Analytik, Forschungszentrum Jülich, 52425 Jülich, Germany
- B. Kłos
- August Chełkowski Institute of Physics, University of Silesia, Uniwersytecka 4, 40-007, Katowice, Poland
- W. Krzemień
- High Energy Physics Division, National Centre for Nuclear Research, 05-400 Otwock-Świerk, Poland
- P. Kulessa
- The Henryk Niewodniczański Institute of Nuclear Physics, Polish Academy of Sciences, 152 Radzikowskiego St, 31-342 Kraków, Poland
- A. Kupść
- Division of Nuclear Physics, Department of Physics and Astronomy, Uppsala University, Box 516, 75120 Uppsala, Sweden; High Energy Physics Department, National Centre for Nuclear Research, ul. Pasteura 7, 02-093, Warsaw, Poland
- K. Lalwani
- Department of Physics, Malaviya National Institute of Technology Jaipur, JLN Marg Jaipur 302017, Rajasthan, India
- D. Lersch
- Institut für Kernphysik, Forschungszentrum Jülich, 52425 Jülich, Germany
- B. Lorentz
- Institut für Kernphysik, Forschungszentrum Jülich, 52425 Jülich, Germany
- A. Magiera
- Institute of Physics, Jagiellonian University, prof. Stanisława Łojasiewicza 11, 30-348 Kraków, Poland
- R. Maier
- Institut für Kernphysik, Forschungszentrum Jülich, 52425 Jülich, Germany; JARA–FAME, Jülich Aachen Research Alliance, Forschungszentrum Jülich, 52425 Jülich, and RWTH Aachen, 52056 Aachen, Germany
- P. Marciniewski
- Division of Nuclear Physics, Department of Physics and Astronomy, Uppsala University, Box 516, 75120 Uppsala, Sweden
- B. Mariański
- Department of Nuclear Physics, National Centre for Nuclear Research, ul. Pasteura 7, 02-093, Warsaw, Poland
- H.-P. Morsch
- Department of Nuclear Physics, National Centre for Nuclear Research, ul. Pasteura 7, 02-093, Warsaw, Poland
- P. Moskal
- Institute of Physics, Jagiellonian University, prof. Stanisława Łojasiewicza 11, 30-348 Kraków, Poland
- H. Ohm
- Institut für Kernphysik, Forschungszentrum Jülich, 52425 Jülich, Germany
- W. Parol
- The Henryk Niewodniczański Institute of Nuclear Physics, Polish Academy of Sciences, 152 Radzikowskiego St, 31-342 Kraków, Poland
- E. Perez del Rio
- Physikalisches Institut, Eberhard–Karls–Universität Tübingen, Auf der Morgenstelle 14, 72076 Tübingen, Germany; Kepler Center für Astro– und Teilchenphysik, Physikalisches Institut der Universität Tübingen, Auf der Morgenstelle 14, 72076 Tübingen, Germany
- N.M. Piskunov
- Veksler and Baldin Laboratory of High Energiy Physics, Joint Institute for Nuclear Physics, 6 Joliot–Curie, Dubna, 141980, Russia
- D. Prasuhn
- Institut für Kernphysik, Forschungszentrum Jülich, 52425 Jülich, Germany
- D. Pszczel
- Division of Nuclear Physics, Department of Physics and Astronomy, Uppsala University, Box 516, 75120 Uppsala, Sweden; High Energy Physics Department, National Centre for Nuclear Research, ul. Pasteura 7, 02-093, Warsaw, Poland
- K. Pysz
- The Henryk Niewodniczański Institute of Nuclear Physics, Polish Academy of Sciences, 152 Radzikowskiego St, 31-342 Kraków, Poland
- J. Ritman
- Institut für Kernphysik, Forschungszentrum Jülich, 52425 Jülich, Germany; JARA–FAME, Jülich Aachen Research Alliance, Forschungszentrum Jülich, 52425 Jülich, and RWTH Aachen, 52056 Aachen, Germany; Institut für Experimentalphysik I, Ruhr–Universität Bochum, Universitätsstr. 150, 44780 Bochum, Germany
- A. Roy
- Department of Physics, Indian Institute of Technology Indore, Khandwa Road, Simrol, Indore 453552, Madhya Pradesh, India
- O. Rundel
- Institute of Physics, Jagiellonian University, prof. Stanisława Łojasiewicza 11, 30-348 Kraków, Poland
- S. Sawant
- Department of Physics, Indian Institute of Technology Bombay, Powai, Mumbai 400076, Maharashtra, India
- S. Schadmand
- Institut für Kernphysik, Forschungszentrum Jülich, 52425 Jülich, Germany
- I. Schätti–Ozerianska
- Institute of Physics, Jagiellonian University, prof. Stanisława Łojasiewicza 11, 30-348 Kraków, Poland
- T. Sefzick
- Institut für Kernphysik, Forschungszentrum Jülich, 52425 Jülich, Germany
- V. Serdyuk
- Institut für Kernphysik, Forschungszentrum Jülich, 52425 Jülich, Germany
- B. Shwartz
- Budker Institute of Nuclear Physics of SB RAS, 11 akademika Lavrentieva prospect, Novosibirsk, 630090, Russia; Novosibirsk State University, 2 Pirogova Str., Novosibirsk, 630090, Russia
- T. Skorodko
- Physikalisches Institut, Eberhard–Karls–Universität Tübingen, Auf der Morgenstelle 14, 72076 Tübingen, Germany; Kepler Center für Astro– und Teilchenphysik, Physikalisches Institut der Universität Tübingen, Auf der Morgenstelle 14, 72076 Tübingen, Germany; Department of Physics, Tomsk State University, 36 Lenina Avenue, Tomsk, 634050, Russia
- M. Skurzok
- Institute of Physics, Jagiellonian University, prof. Stanisława Łojasiewicza 11, 30-348 Kraków, Poland; Corresponding author.
- J. Smyrski
- Institute of Physics, Jagiellonian University, prof. Stanisława Łojasiewicza 11, 30-348 Kraków, Poland
- V. Sopov
- Institute for Theoretical and Experimental Physics named by A.I. Alikhanov of National Research Centre “Kurchatov Institute”, 25 Bolshaya Cheremushkinskaya, Moscow, 117218, Russia
- R. Stassen
- Institut für Kernphysik, Forschungszentrum Jülich, 52425 Jülich, Germany
- J. Stepaniak
- High Energy Physics Department, National Centre for Nuclear Research, ul. Pasteura 7, 02-093, Warsaw, Poland
- E. Stephan
- August Chełkowski Institute of Physics, University of Silesia, Uniwersytecka 4, 40-007, Katowice, Poland
- G. Sterzenbach
- Institut für Kernphysik, Forschungszentrum Jülich, 52425 Jülich, Germany
- H. Stockhorst
- Institut für Kernphysik, Forschungszentrum Jülich, 52425 Jülich, Germany
- H. Ströher
- Institut für Kernphysik, Forschungszentrum Jülich, 52425 Jülich, Germany; JARA–FAME, Jülich Aachen Research Alliance, Forschungszentrum Jülich, 52425 Jülich, and RWTH Aachen, 52056 Aachen, Germany
- A. Szczurek
- The Henryk Niewodniczański Institute of Nuclear Physics, Polish Academy of Sciences, 152 Radzikowskiego St, 31-342 Kraków, Poland
- A. Trzciński
- Department of Nuclear Physics, National Centre for Nuclear Research, ul. Pasteura 7, 02-093, Warsaw, Poland
- M. Wolke
- Division of Nuclear Physics, Department of Physics and Astronomy, Uppsala University, Box 516, 75120 Uppsala, Sweden
- A. Wrońska
- Institute of Physics, Jagiellonian University, prof. Stanisława Łojasiewicza 11, 30-348 Kraków, Poland
- P. Wüstner
- Zentralinstitut für Engineering, Elektronik und Analytik, Forschungszentrum Jülich, 52425 Jülich, Germany
- A. Yamamoto
- High Energy Accelerator Research Organisation KEK, Tsukuba, Ibaraki 305–0801, Japan
- J. Zabierowski
- Department of Astrophysics, National Centre for Nuclear Research, 90–950 Łódź, Poland
- M.J. Zieliński
- Institute of Physics, Jagiellonian University, prof. Stanisława Łojasiewicza 11, 30-348 Kraków, Poland
- J. Złomańczuk
- Division of Nuclear Physics, Department of Physics and Astronomy, Uppsala University, Box 516, 75120 Uppsala, Sweden
- P. Żuprański
- Department of Nuclear Physics, National Centre for Nuclear Research, ul. Pasteura 7, 02-093, Warsaw, Poland
- M. Żurek
- Institut für Kernphysik, Forschungszentrum Jülich, 52425 Jülich, Germany
- Journal volume & issue
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Vol. 802
Abstract
We report on the experimental search for the bound state of an η meson and He3 nucleus performed using the WASA-at-COSY detector setup. In order to search for the η-mesic nucleus decay, the pd→3He2γ and pd→3He6γ channels have been analysed. These reactions manifest the direct decay of the η meson bound in a He3 nucleus. This non-mesonic decay channel has been considered for the first time. When taking into account only statistical errors, the obtained excitation functions reveal a slight indication for a possible bound state signal corresponding to a 3He-η nucleus width Γ above 20 MeV and binding energy Bs between 0 and 15 MeV. However, the determined cross sections are consistent with zero in the range of the systematic uncertainty. Therefore, as final result we estimate only the upper limit for the cross section of the η-mesic He3 nucleus formation followed by the η meson decay which varies between 2 nb and 15 nb depending on possible bound state parameters. Keywords: η-mesic nuclei, η meson
