Search for an Isospin I =3 Dibaryon

P. Adlarson , W. Augustyniak , W. Bardan , M. Bashkanov , F.S. Bergmann , M. Berlowski , H. Bhatt , A. Bondar

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M. Buescher H. Calen I. Ciepa H. Clement E. Czerwinski K. Demmich R. Engels A. Erven W. Erven W. Eyrich P. Fedorets K. Foehl K. Fransson F. Goldenbaum A.Goswami K. Grigoryev C.-O. Gullstroem L. Heijkenskjoeld V. Hejny N. Huesken L. Jarczyk T. Johansson B.Kamys G. Kemmerling F.A. Khan G. Khatri A. Khoukaz O. Khreptak D.A. Kirillov S. Kistryn H. Kleines B. Klos W. Krzemien P. Kulessa A. Kupsc A. Kuzmin K. Lalwani D. Lersch B. Lorentz A. Magiera R. Maier P. Marciniewski B. Marianski H.-P. Morsch P. Moskal H. Ohm E. Perez del Rio N.M. Piskunov D. Prasuhn D. Pszczel K. Pysz A. Pysniak J. Ritman A. Roy Z. Rudy O. Rundel S. Sawant S. Schadmand I. Schaetti-Ozerianska T. Sefzick V. Serdyuk B. Shwartz K. Sitterberg T. Skorodko M. Skurzok J. Smyrski V. Sopov R. Strassen J. Stepaniak E. Stephan G. Sterzenbach H. Stockhorst H. Stroeher A. Szczurek A. Trzcinski R. Varma M. Wolke A. Wronska P. Wuestner A. Yamamoto J. Zabierowski M.J. Zielinski A. Zink J. Zlomanczuk P. Zupranski M. Zurek

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classification ⚛️ nucl-ex hep-ex

keywords dibaryonresonancesearchadditionbeencalculationsclear-cutcross

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Various theoretical calculations based on QCD or hadronic interactions predict that in addition to the recently observed dibaryon resonance $d^*(2380)$ with $I(J^P) = 0(3^+)$ there should also exist a dibaryon resonance with mirrored quantum numbers $I(J^P) = 3(0^+)$. We report here on a search for such a $NN$-decoupled state in data on the $pp \to pp\pi^+\pi^+\pi^-\pi^-$ reaction. Since no clear-cut evidence has been found, we give upper limits for the production cross section of such a resonance in the mass range 2280 - 2500 MeV.

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Search for an Isospin I =3 Dibaryon

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