Examination of the production of an isotensor dibaryon in the pp -> pp pi(+)pi(-) reaction

Journal article

Publication Details

Author(s): Adlarson P, Augustyniak W, Bardan W, Bashkanov M, Bergmann FS, Berlowski M, Bondar A, Buescher M, Calen H, Ciepal I, Clement H, Czerwinski E, Demmich K, Engels R, Erven A, Erven W, Eyrich W, Fedorets P, Foehl K, Fransson K, Goldenbaum F, Goswami A, Grigoryev K, Heijkenskjoeld L, Hejny V, Huesken N, Jarczyk L, Johansson T, Kamys B, Kemmerling G, Khoukaz A, Khreptak O, Kirillov DA, Kistryn S, Kleines H, Klos B, Krzemien W, Kulessa P, Kupsc A, Lalwani K, Lersch D, Lorentz B, Magiera A, Maier R, Marciniewski P, Marianski B, Morsch HP, Moskal P, Ohm H, Parol W, Del Rio EP, Piskunov NM, Prasuhn D, Pszczel D, Pysz K, Ritman J, Roy A, Rudy Z, Rundel O, Sawant S, Schadmand S, Schatti-Ozerianska I, Sefzick T, Serdyuk V, Shwartz B, Skorodko T, Skurzok M, Smyrski J, Sopov V, Stassen R, Stepaniak J, Stephan E, Sterzenbach G, Stockhorst H, Stroeher H, Szczurek A, Trzcinski A, Wolke M, Wronska A, Wuestner P, Yamamoto A, Zabierowski J, Zielinski MJ, Zlomanczuk J, Zupranski P, Zurek M
Journal: Physical Review C
Publication year: 2019
Volume: 99
Journal issue: 2
ISSN: 0556-2813


The quasifree pp -> pp pi(+)pi(-) reaction has been measured by means of pd collisions at T-p = 1.2 GeV using the WASA detector setup at COSY enabling exclusive and kinematically complete measurements. Total and differential cross sections have been extracted for the energy region T-p = 1.08-1.36 GeV (root s = 2.35-2.46 GeV) covering thus the regions of N* (1440 ) and Delta(1232)Delta(1232) resonance excitations. Calculations describing these excitations by t-channel meson exchange as well as isospin relations based on the pp -> pp pi(0)pi(0) data underpredict substantially the measured total cross section. The calculations are also at variance with specific experimental differential cross sections. An isotensor Delta N dibaryon resonance with I(J(P)) = 2(1(+) ) produced associatedly with a pion is able to overcome these deficiencies. Such a dibaryon was predicted by Dyson and Xuong [Phys. Rev. Lett. 13, 815 (1964)] and more recently calculated by A. Gal and H. Garcilazo [Nucl. Phys. A 928, 73 (2014)].

FAU Authors / FAU Editors

Eyrich, Wolfgang apl. Prof. Dr.
Lehrstuhl für Experimentalphysik (Teilchen- und Astroteilchenphysik)

External institutions with authors

Eberhard Karls Universität Tübingen
Forschungszentrum Jülich / Research Centre Jülich (FZJ)
Indian Institute of Technology Bombay
Indian Institute of Technology Indore (IITI) / भारतीय प्रौद्योगिकी संस्थान इंदौर
Jagiellonian University / Uniwersytet Jagielloński (UJ)
Joint Institute for Nuclear Research (JINR) / Объединённый институт ядерных исследований (ОИЯИ)
Justus-Liebig-Universität Gießen
Malaviya National Institute of Technology Jaipur (MNIT) / मालवीय राष्ट्रीय प्रौद्योगिकी संस्थान जयपुर
National Centre for Nuclear Research (früher:Institute of Atomic Energy POLATOM & Andrzej Sołtan Institute for Nuclear Studies) / Narodowe Centrum Badań Jądrowych (NCBJ)
National Research Centre "Kurchatov Institute" / Hациональный исследовательский центр "Курчатовский Институт"
Polska Akademia Nauk (PAN) / Polish Academy of Sciences
Russian Academy of Sciences / Росси́йская акаде́мия нау́к (RAS)
The High Energy Accelerator Research Organization (KEK)
University of Silesia in Katowice / Uniwersytet Śląski w Katowicach
University of York
Uppsala University
Westfälische Wilhelms-Universität (WWU) Münster

How to cite

Adlarson, P., Augustyniak, W., Bardan, W., Bashkanov, M., Bergmann, F.S., Berlowski, M.,... Zurek, M. (2019). Examination of the production of an isotensor dibaryon in the pp -> pp pi(+)pi(-) reaction. Physical Review C, 99(2). https://dx.doi.org/10.1103/PhysRevC.99.025201

Adlarson, P., et al. "Examination of the production of an isotensor dibaryon in the pp -> pp pi(+)pi(-) reaction." Physical Review C 99.2 (2019).


Last updated on 2019-08-03 at 08:53