About: Inclusive dielectron spectra in p plus p collisions at 3.5 GeV kinetic beam energy

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	We present the inclusive invariant mass, transverse momentum and rapidity distributions of dielectrons (e(+)e(-) pairs) in p+p interactions at 3.5 GeV beam kinetic energy. In the vector meson mass region, a distinct peak corresponding to direct omega decays is reconstructed with a 2% mass resolution. The data is compared to predictions from three model calculations. Due to the large acceptance of the HADES apparatus for e(+)e(-) invariant masses above 0.2 GeV/c(2) and for transverse pair momenta p(t) < 1 GeV/c, acceptance corrections are, to a large extent, model independent. This allows us to extract from dielectron data for the first time at this energy the inclusive production cross-sections for light vector mesons. Inclusive production cross-sections for pi(0) and eta mesons are also reported. The obtained results will serve as an important reference for the study of vector meson production in proton-nucleus and heavy-ion collisions. Furthermore, using this data, an improved value for the upper bound of the branching ratio for direct eta decays into the electron-positron channel is obtained. We present the inclusive invariant mass, transverse momentum and rapidity distributions of dielectrons (e(+)e(-) pairs) in p+p interactions at 3.5 GeV beam kinetic energy. In the vector meson mass region, a distinct peak corresponding to direct omega decays is reconstructed with a 2% mass resolution. The data is compared to predictions from three model calculations. Due to the large acceptance of the HADES apparatus for e(+)e(-) invariant masses above 0.2 GeV/c(2) and for transverse pair momenta p(t) < 1 GeV/c, acceptance corrections are, to a large extent, model independent. This allows us to extract from dielectron data for the first time at this energy the inclusive production cross-sections for light vector mesons. Inclusive production cross-sections for pi(0) and eta mesons are also reported. The obtained results will serve as an important reference for the study of vector meson production in proton-nucleus and heavy-ion collisions. Furthermore, using this data, an improved value for the upper bound of the branching ratio for direct eta decays into the electron-positron channel is obtained. (en)
Title	Inclusive dielectron spectra in p plus p collisions at 3.5 GeV kinetic beam energy Inclusive dielectron spectra in p plus p collisions at 3.5 GeV kinetic beam energy (en)
skos:prefLabel	Inclusive dielectron spectra in p plus p collisions at 3.5 GeV kinetic beam energy Inclusive dielectron spectra in p plus p collisions at 3.5 GeV kinetic beam energy (en)
skos:notation	RIV/61389005:_____/12:00384750!RIV13-AV0-61389005
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(IAA100480803), P(LC07050)
http://linked.open...iv/cisloPeriodika	5
http://linked.open...vai/riv/dodaniDat	2013
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	141081
http://linked.open...ai/riv/idVysledku	RIV/61389005:_____/12:00384750
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	relativistic collisions; nuclear matter; dielectron spectra; HADES (en)
http://linked.open.../riv/klicoveSlovo	nuclear matter HADES relativistic collisions dielectron spectra
http://linked.open...odStatuVydavatele	DE - Spolková republika Německo
http://linked.open...ontrolniKodProRIV	[BE5EB99D042E]
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	103 (xsd:int)
http://linked.open...vavai/riv/projekt	Center of experimental nuclear astrophysics and nuclear physics Dilepton production in ion-ion collisions studied using HADES setup
http://linked.open...UplatneniVysledku	2012
http://linked.open...v/svazekPeriodika	48
http://linked.open...iv/tvurceVysledku	Krása, Antonín Křížek, Filip Tlustý, Pavel Wagner, Vladimír Agakishiev, G. Balanda, A. Belyaev, A. Finocchiaro, P. Kugler, Andrej Rustamov, A. Sobolev, Yuri Guber, F. Karavicheva, T. Lapidus, K. Markert, J. Pechenova, O. Tarantola, A. Teilab, K. Michel, J. Strobele, H.
http://linked.open...ain/vavai/riv/wos	000304696800011
issn	1434-6001
number of pages	11 (xsd:int)
http://bibframe.org/vocab/doi	10.1140/epja/i2012-12064-y

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