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In this letter we report the first multi-differential measurement of correlated pion-proton pairs from 2 billion Au+Au collisions at sNN=2.42 GeV collected with HADES. In this energy regime the population of Δ(1232) resonances plays an important role in the way energy is distributed between intrinsic excitation energy and kinetic energy of the hadrons in the fireball. The triple differential d3N/dMπjavax.xml.bind.JAXBElement@3b2318adpdpTdy distributions of correlated π±p pairs have been determined by subtracting the πp combinatorial background using an iterative method. The invariant-mass distributions in the Δ(1232) mass region show strong deviations from a Breit-Wigner function with vacuum width and mass. The yield of correlated pion-proton pairs exhibits a complex isospin, rapidity and transverse-momentum dependence. In the invariant mass range 1.1

Correlated pion-proton pair emission off hot and dense QCD matter

Adamczewski-Musch J.;Arnold O.;Behnke C.;Belounnas A.;Belyaev A.;Berger-Chen J. C.;Blanco A.;Blume C.;Bohmer M.;Bordalo P.;Chernenko S.;Chlad L.;Ciepal I.;Deveaux C.;Dreyer J.;Epple E.;Fabbietti L.;Fateev O.;Filip P.;Fonte P.;Franco C.;Friese J.;Frohlich I.;Galatyuk T.;Garzon J. A.;Gernhauser R.;Golubeva M.;Greifenhagen R.;Guber F.;Gumberidze M.;Harabasz S.;Heinz T.;Hennino T.;Hlavac S.;Hohne C.;Holzmann R.;Ierusalimov A.;Ivashkin A.;Kampfer B.;Karavicheva T.;Kardan B.;Koenig I.;Koenig W.;Kohls M.;Kolb B. W.;Korcyl G.;Kornakov G.;Kornas F.;Kotte R.;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.;Malige A.;Mangiarotti A.;Markert J.;Matulewicz T.;Maurus S.;Metag V.;Michel J.;Mihaylov D. M.;Morozov S.;Muntz C.;Munzer R.;Naumann L.;Nowakowski K.;Parpottas Y.;Pechenov V.;Pechenova O.;Petukhov O.;Piasecki K.;Pietraszko J.;Przygoda W.;Pysz K.;Ramos S.;Ramstein B.;Rathod N.;Reshetin A.;Rodriguez-Ramos P.;Rosier P.;Rost A.;Sadovsky A.;Salabura P.;Scheib T.;Schuldes H.;Schwab E.;Scozzi F.;Seck F.;Sellheim P.;Selyuzhenkov I.;Siebenson J.;Silva L.;Singh U.;Smyrski J.;Sobolev Y. G.;Spataro S.;Spies S.;Strobele H.;Stroth J.;Sturm C.;Svoboda O.;Szala M.;Tlusty P.;Traxler M.;Tsertos H.;Usenko E.;Wagner V.;Wendisch C.;Wiebusch M. G.;Wirth J.;Wojcik D.;Zanevsky Y.;Zumbruch P.

2021-01-01

Abstract

In this letter we report the first multi-differential measurement of correlated pion-proton pairs from 2 billion Au+Au collisions at sNN=2.42 GeV collected with HADES. In this energy regime the population of Δ(1232) resonances plays an important role in the way energy is distributed between intrinsic excitation energy and kinetic energy of the hadrons in the fireball. The triple differential d3N/dMπjavax.xml.bind.JAXBElement@3b2318adpdpTdy distributions of correlated π±p pairs have been determined by subtracting the πp combinatorial background using an iterative method. The invariant-mass distributions in the Δ(1232) mass region show strong deviations from a Breit-Wigner function with vacuum width and mass. The yield of correlated pion-proton pairs exhibits a complex isospin, rapidity and transverse-momentum dependence. In the invariant mass range 1.1

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Scheda completa

Scheda completa (DC)

	Anno
	
			2021
		
	Titolo rivista
	
			PHYSICS LETTERS. SECTION B
		
	N. Volume
	
			819
		
	Pagine (da)
	
			1
		
	Pagine (a)
	
			8
		
	DOI
	
			https://dx.doi.org/10.1016/j.physletb.2021.136421
		
	URL del prodotto (archivi open access, fulltext su sito editore, etc.)
	
			https://www.sciencedirect.com/science/article/pii/S0370269321003610?via=ihub
		
	Parole Chiave
	
			Baryonic resonances; Freezeout; Heavy-ion reactions
		
	Tutti gli autori
	
			Adamczewski-Musch J.; Arnold O.; Behnke C.; Belounnas A.; Belyaev A.; Berger-Chen J.C.; Blanco A.; Blume C.; Bohmer M.; Bordalo P.; Chernenko S.; Chlad L.; Ciepal I.; Deveaux C.; Dreyer J.; Epple E.; Fabbietti L.; Fateev O.; Filip P.; Fonte P.; Franco C.; Friese J.; Frohlich I.; Galatyuk T.; Garzon J.A.; Gernhauser R.; Golubeva M.; Greifenhagen R.; Guber F.; Gumberidze M.; Harabasz S.; Heinz T.; Hennino T.; Hlavac S.; Hohne C.; Holzmann R.; Ierusalimov A.; Ivashkin A.; Kampfer B.; Karavicheva T.; Kardan B.; Koenig I.; Koenig W.; Kohls M.; Kolb B.W.; Korcyl G.; Kornakov G.; Kornas F.; Kotte R.; 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.; Malige A.; Mangiarotti A.; Markert J.; Matulewicz T.; Maurus S.; Metag V.; Michel J.; Mihaylov D.M.; Morozov S.; Muntz C.; Munzer R.; Naumann L.; Nowakowski K.; Parpottas Y.; Pechenov V.; Pechenova O.; Petukhov O.; Piasecki K.; Pietraszko J.; Przygoda W.; Pysz K.; Ramos S.; Ramstein B.; Rathod N.; Reshetin A.; Rodriguez-Ramos P.; Rosier P.; Rost A.; Sadovsky A.; Salabura P.; Scheib T.; Schuldes H.; Schwab E.; Scozzi F.; Seck F.; Sellheim P.; Selyuzhenkov I.; Siebenson J.; Silva L.; Singh U.; Smyrski J.; Sobolev Y.G.; Spataro S.; Spies S.; Strobele H.; Stroth J.; Sturm C.; Svoboda O.; Szala M.; Tlusty P.; Traxler M.; Tsertos H.; Usenko E.; Wagner V.; Wendisch C.; Wiebusch M.G.; Wirth J.; Wojcik D.; Zanevsky Y.; Zumbruch P.
		
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			03A-Articolo su Rivista

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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/1804935

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