About: Baryon resonance production and dielectron decays in proton-proton collisions at 3.5 GeV

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	We report on baryon resonance production and decay in proton-proton collisions at a kinetic energy of 3.5 GeV based on data measured with HADES. The exclusive channels pp -> np pi(+) and pp -> pp pi(0) as well as pp -> ppe(+)e(-) are studied simultaneously for the first time. The invariant masses and angular distributions of the pion-nucleon systems were studied and compared to simulations based on a resonance model ansatz assuming saturation of the pion production by an incoherent sum of baryonic resonances (R) with masses < 2 GeV/c(2). A very good description of the one-pion production is achieved allowing for an estimate of individual baryon resonance production cross sections which are used as input to calculate the dielectron yields from R -> pe(+)e(-) decays. Two models of the resonance decays into dielectrons are examined assuming a point-like RN gamma* coupling and the dominance of the rho meson. The results of model calculations are compared to data from the exclusive ppe(+)e(-) channel by means of the dielectron and pe(+)e(-) invariant mass distributions. We report on baryon resonance production and decay in proton-proton collisions at a kinetic energy of 3.5 GeV based on data measured with HADES. The exclusive channels pp -> np pi(+) and pp -> pp pi(0) as well as pp -> ppe(+)e(-) are studied simultaneously for the first time. The invariant masses and angular distributions of the pion-nucleon systems were studied and compared to simulations based on a resonance model ansatz assuming saturation of the pion production by an incoherent sum of baryonic resonances (R) with masses < 2 GeV/c(2). A very good description of the one-pion production is achieved allowing for an estimate of individual baryon resonance production cross sections which are used as input to calculate the dielectron yields from R -> pe(+)e(-) decays. Two models of the resonance decays into dielectrons are examined assuming a point-like RN gamma* coupling and the dominance of the rho meson. The results of model calculations are compared to data from the exclusive ppe(+)e(-) channel by means of the dielectron and pe(+)e(-) invariant mass distributions. (en)
Title	Baryon resonance production and dielectron decays in proton-proton collisions at 3.5 GeV Baryon resonance production and dielectron decays in proton-proton collisions at 3.5 GeV (en)
skos:prefLabel	Baryon resonance production and dielectron decays in proton-proton collisions at 3.5 GeV Baryon resonance production and dielectron decays in proton-proton collisions at 3.5 GeV (en)
skos:notation	RIV/61389005:_____/14:00428664!RIV15-GA0-61389005
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(GA13-06759S), P(LG14004)
http://linked.open...iv/cisloPeriodika	5
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Krása, Antonín Tlustý, Pavel Křížek, Filip Kugler, Andrej Wagner, Vladimír Sobolev, Yuri
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav jaderné fyziky AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	4886
http://linked.open...ai/riv/idVysledku	RIV/61389005:_____/14:00428664
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	heavy ion collisions; bayronic resonance; HADES (en)
http://linked.open.../riv/klicoveSlovo	HADES heavy ion collisions bayronic resonance
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[D9E2E4718792]
http://linked.open...i/riv/nazevZdroje	European Physical Journal A
http://linked.open...in/vavai/riv/obor	BG
http://linked.open...ichTvurcuVysledku	6 (xsd:int)
http://linked.open...cetTvurcuVysledku	97 (xsd:int)
http://linked.open...vavai/riv/projekt	Experimentální studium hadronů v baryonovém prostředí Cooperation of Czech Republic with JINR Dubna in the theoretical and nuclear physics and application of nuclear methods in other fields
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	50
http://linked.open...iv/tvurceVysledku	Krása, Antonín Křížek, Filip Tlustý, Pavel Wagner, Vladimír Agakishiev, G. Balanda, A. Belver, D. Belyaev, A. Blanco, A. Boyard, J. L. Cabanelas, P. Chernenko, S. Dybczak, A. Epple, E. Fabbietti, L. Fateev, O. Kugler, Andrej Böhmer, M. Berger-Chen, J. C. Sobolev, Yuri, G.
http://linked.open...ain/vavai/riv/wos	000335735700002
issn	1434-6001
number of pages	16 (xsd:int)
http://bibframe.org/vocab/doi	10.1140/epja/i2014-14082-1

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