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The inclusive production of Λ hyperons in proton-proton collisions at s=3.18GeV was measured with HADES at the GSI Helmholtzzentrum für Schwerionenforschung in Darmstadt. The experimental data are compared to a data-based model for individual exclusive Λ production channels in the same reaction. The contributions of intermediate resonances such as Σ(1385), Δ++, or N∗ are considered in detail. In particular, the result of a partial-wave analysis accounts for the abundant pK+Λ final state. Model and data show a reasonable agreement at midrapidities, while a difference is found for larger rapidities. A total Λ production cross section in p+p collisions at s=3.18GeV of σ(p+p→Λ+X)=207.3±1.3-7.3+6.0(stat.)±8.4(syst.)-0.5+0.4(model.)μb is found.

Inclusive Λ production in proton-proton collisions at 3.5 GeV

Adamczewski-Musch J.;Agakishiev G.;Arnold O.;Atomssa E. T.;Behnke C.;Berger-Chen J. C.;Biernat J.;Blanco A.;Blume C.;Bohmer M.;Bordalo P.;Chernenko S.;Deveaux C.;Dreyer J.;Dybczak A.;Epple E.;Fabbietti L.;Fateev O.;Fonte P.;Franco C.;Friese J.;Frohlich I.;Galatyuk T.;Garzon J. A.;Gill K.;Golubeva M.;Guber F.;Gumberidze M.;Harabasz S.;Hennino T.;Hlavac S.;Hohne C.;Holzmann R.;Ierusalimov A.;Ivashkin A.;Jurkovic M.;Kampfer B.;Karavicheva T.;Kardan B.;Koenig I.;Koenig W.;Kolb B. W.;Korcyl G.;Kornakov G.;Kotte R.;Krasa A.;Krebs E.;Kuc H.;Kugler A.;Kunz T.;Kurepin A.;Kurilkin A.;Kurilkin P.;Ladygin V.;Lalik R.;Lapidus K.;Lebedev A.;Lopes L.;Lorenz M.;Mahmoud T.;Maier L.;Maurus S.;Mangiarotti A.;Markert J.;Metag V.;Michel J.;Morozov S.;Muntz C.;Munzer R.;Naumann L.;Palka M.;Parpottas Y.;Pechenov V.;Pechenova O.;Petousis V.;Pietraszko J.;Przygoda W.;Ramos S.;Ramstein B.;Rehnisch L.;Reshetin A.;Rost A.;Rustamov A.;Sadovsky A.;Salabura P.;Scheib T.;Schmidt-Sommerfeld K.;Schuldes H.;Sellheim P.;Siebenson J.;Silva L.;Sobolev Y. G.;Spataro S.;Strobele H.;Stroth J.;Strzempek P.;Sturm C.;Svoboda O.;Tarantola A.;Teilab K.;Tlusty P.;Traxler M.;Tsertos H.;Vasiliev T.;Wagner V.;Wendisch C.;Wirth J.;Zanevsky Y.;Zumbruch P.

2017-01-01

Abstract

The inclusive production of Λ hyperons in proton-proton collisions at s=3.18GeV was measured with HADES at the GSI Helmholtzzentrum für Schwerionenforschung in Darmstadt. The experimental data are compared to a data-based model for individual exclusive Λ production channels in the same reaction. The contributions of intermediate resonances such as Σ(1385), Δ++, or N∗ are considered in detail. In particular, the result of a partial-wave analysis accounts for the abundant pK+Λ final state. Model and data show a reasonable agreement at midrapidities, while a difference is found for larger rapidities. A total Λ production cross section in p+p collisions at s=3.18GeV of σ(p+p→Λ+X)=207.3±1.3-7.3+6.0(stat.)±8.4(syst.)-0.5+0.4(model.)μb is found.

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Scheda completa

Scheda completa (DC)

	Anno
	
			2017
		
	Titolo rivista
	
			PHYSICAL REVIEW C
		
	N. Volume
	
			95
		
	Fascicolo
	
			1
		
	Pagine (da)
	
			015207-1
		
	Pagine (a)
	
			015207-10
		
	DOI
	
			https://dx.doi.org/10.1103/PhysRevC.95.015207
		
	URL del prodotto (archivi open access, fulltext su sito editore, etc.)
	
			https://journals.aps.org/prc/abstract/10.1103/PhysRevC.95.015207
		
	Tutti gli autori
	
			Adamczewski-Musch J.; Agakishiev G.; Arnold O.; Atomssa E.T.; Behnke C.; Berger-Chen J.C.; Biernat J.; Blanco A.; Blume C.; Bohmer M.; Bordalo P.; Chernenko S.; Deveaux C.; Dreyer J.; Dybczak A.; Epple E.; Fabbietti L.; Fateev O.; Fonte P.; Franco C.; Friese J.; Frohlich I.; Galatyuk T.; Garzon J.A.; Gill K.; Golubeva M.; Guber F.; Gumberidze M.; Harabasz S.; Hennino T.; Hlavac S.; Hohne C.; Holzmann R.; Ierusalimov A.; Ivashkin A.; Jurkovic M.; Kampfer B.; Karavicheva T.; Kardan B.; Koenig I.; Koenig W.; Kolb B.W.; Korcyl G.; Kornakov G.; Kotte R.; Krasa A.; Krebs E.; Kuc H.; Kugler A.; Kunz T.; Kurepin A.; Kurilkin A.; Kurilkin P.; Ladygin V.; Lalik R.; Lapidus K.; Lebedev A.; Lopes L.; Lorenz M.; Mahmoud T.; Maier L.; Maurus S.; Mangiarotti A.; Markert J.; Metag V.; Michel J.; Morozov S.; Muntz C.; Munzer R.; Naumann L.; Palka M.; Parpottas Y.; Pechenov V.; Pechenova O.; Petousis V.; Pietraszko J.; Przygoda W.; Ramos S.; Ramstein B.; Rehnisch L.; Reshetin A.; Rost A.; Rustamov A.; Sadovsky A.; Salabura P.; Scheib T.; Schmidt-Sommerfeld K.; Schuldes H.; Sellheim P.; Siebenson J.; Silva L.; Sobolev Y.G.; Spataro S.; Strobele H.; Stroth J.; Strzempek P.; Sturm C.; Svoboda O.; Tarantola A.; Teilab K.; Tlusty P.; Traxler M.; Tsertos H.; Vasiliev T.; Wagner V.; Wendisch C.; Wirth J.; Zanevsky Y.; Zumbruch P.
		
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/1803731

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