Isotensor Dibaryon in the pp →ppπ+π- Reaction?

Adlarson P.; Augustyniak W.; Bardan W.; Bashkanov M.; Bergmann F. S.; Berlowski M.; Bondar A.; Buscher M.; Calen H.; Ciepal I.; Clement H.; Czerwinski E.; Demmich K.; Engels R.; Erven A.; Erven W.; Eyrich W.; Fedorets P.; Fohl K.; Fransson K.; Goldenbaum F.; Goswami A.; Grigoryev K.; Heijkenskjold L.; Hejny V.; Husken N.; Jarczyk L.; Johansson T.; Kamys B.; Kemmerling G.; Khoukaz A.; Khreptak O.; Kirillov D. A.; 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 H. -P.; Moskal P.; Ohm H.; Parol W.; Perez Del Rio E.; Piskunov N. M.; 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.; Stroher H.; Szczurek A.; Trzcinski A.; Wolke M.; Wronska A.; Wustner P.; Yamamoto A.; Zabierowski J.; Zielinski M. J.; Zlomanczuk J.; Zupranski P.; Zurek M.

doi:10.1103/PhysRevLett.121.052001

Exclusive measurements of the quasifree pp→ppπ+π- reaction have been carried out at WASA@COSY by means of pd collisions at Tp=1.2 GeV. Total and differential cross sections have been extracted covering the energy region Tp=1.08-1.36 GeV, which is the region of N∗(1440) and Δ(1232)Δ(1232) resonance excitations. Calculations describing these excitations by t-channel meson exchange are at variance with the measured differential cross sections and underpredict substantially the experimental total cross section. An isotensor ΔN dibaryon resonance with I(JP)=2(1+) produced associatedly with a pion is able to overcome these deficiencies.

Isotensor Dibaryon in the pp →ppπ+π- Reaction? / Adlarson, P., Augustyniak, W., Bardan, W., Bashkanov, M., Bergmann, F.S., Berlowski, M., Bondar, A., Buscher, M., Calen, H., Ciepal, I., Clement, H., Czerwinski, E., Demmich, K., Engels, R., Erven, A., Erven, W., Eyrich, W., Fedorets, P., Fohl, K., Fransson, K., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 121:5(2018), p. 052001. [10.1103/PhysRevLett.121.052001]

Isotensor Dibaryon in the pp →ppπ+π- Reaction?

Adlarson P.;Augustyniak W.;Bardan W.;Bashkanov M.;Bergmann F. S.;Berlowski M.;Bondar A.;Buscher M.;Calen H.;Ciepal I.;Clement H.;Czerwinski E.;Demmich K.;Engels R.;Erven A.;Erven W.;Eyrich W.;Fedorets P.;Fohl K.;Fransson K.;Goldenbaum F.;Goswami A.;Grigoryev K.;Heijkenskjold L.;Hejny V.;Husken N.;Jarczyk L.;Johansson T.;Kamys B.;Kemmerling G.;Khoukaz A.;Khreptak O.;Kirillov D. A.;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 H. -P.;Moskal P.;Ohm H.;Parol W.;Perez Del Rio E.;Piskunov N. M.;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.;Stroher H.;Szczurek A.;Trzcinski A.;Wolke M.;Wronska A.;Wustner P.;Yamamoto A.;Zabierowski J.;Zielinski M. J.;Zlomanczuk J.;Zupranski P.;Zurek M.

2018

Abstract

Exclusive measurements of the quasifree pp→ppπ+π- reaction have been carried out at WASA@COSY by means of pd collisions at Tp=1.2 GeV. Total and differential cross sections have been extracted covering the energy region Tp=1.08-1.36 GeV, which is the region of N∗(1440) and Δ(1232)Δ(1232) resonance excitations. Calculations describing these excitations by t-channel meson exchange are at variance with the measured differential cross sections and underpredict substantially the experimental total cross section. An isotensor ΔN dibaryon resonance with I(JP)=2(1+) produced associatedly with a pion is able to overcome these deficiencies.

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	Anno di pubblicazione
	
				2018
			
	Parole chiave
	
				dibaryon, particle physics, nuclear physics
			
	Tipologia
	
				01 Pubblicazione su rivista::01a Articolo in rivista
			
	Citazione
	
				Isotensor Dibaryon in the pp →ppπ+π- Reaction? / Adlarson, P., Augustyniak, W., Bardan, W., Bashkanov, M., Bergmann, F.S., Berlowski, M., Bondar, A., Buscher, M., Calen, H., Ciepal, I., Clement, H., Czerwinski, E., Demmich, K., Engels, R., Erven, A., Erven, W., Eyrich, W., Fedorets, P., Fohl, K., Fransson, K., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 121:5(2018), p. 052001. [10.1103/PhysRevLett.121.052001]

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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1417439

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