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

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 (2019)

Publication Type: Journal article

Publication year: 2019

Journal

Book Volume: 99

Article Number: 025201

Journal Issue: 2

DOI: 10.1103/PhysRevC.99.025201

Abstract

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)].

Authors with CRIS profile

Involved external institutions

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

How to cite

APA:

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://doi.org/10.1103/PhysRevC.99.025201

MLA:

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).

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