About: Di-electron spectrum at mid-rapidity in p+p collisions at root s=200 GeV

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	We report on the mid-rapidity mass spectrum of di-electrons and cross sections of pseudoscalar and vector mesons via e(+) e(-) decays, from root s = 200 GeV p + p collisions, measured by the large-acceptance experiment STAR at the Relativistic Heavy Ion Collider. The ratio of the di-electron continuum to the combinatorial background is larger than 10% over the entire mass range. Simulations of di-electrons from light-meson decays and heavy-flavor decays (charmonium and open charm correlation) are found to describe the data. The extracted omega -> e(+) e(-) invariant yields are consistent with previous measurements. The mid-rapidity yields (dN/dy) of phi and J/psi are extracted through their di-electron decay channels and are consistent with the previous measurements of phi -> K+ K- and J/psi -> e(+) e(-). Our results suggest a new upper limit of the branching ratio of the eta -> e(+) e(-) of 1.7 x 10(-5) at the 90% confidence level. We report on the mid-rapidity mass spectrum of di-electrons and cross sections of pseudoscalar and vector mesons via e(+) e(-) decays, from root s = 200 GeV p + p collisions, measured by the large-acceptance experiment STAR at the Relativistic Heavy Ion Collider. The ratio of the di-electron continuum to the combinatorial background is larger than 10% over the entire mass range. Simulations of di-electrons from light-meson decays and heavy-flavor decays (charmonium and open charm correlation) are found to describe the data. The extracted omega -> e(+) e(-) invariant yields are consistent with previous measurements. The mid-rapidity yields (dN/dy) of phi and J/psi are extracted through their di-electron decay channels and are consistent with the previous measurements of phi -> K+ K- and J/psi -> e(+) e(-). Our results suggest a new upper limit of the branching ratio of the eta -> e(+) e(-) of 1.7 x 10(-5) at the 90% confidence level. (en)
Title	Di-electron spectrum at mid-rapidity in p+p collisions at root s=200 GeV Di-electron spectrum at mid-rapidity in p+p collisions at root s=200 GeV (en)
skos:prefLabel	Di-electron spectrum at mid-rapidity in p+p collisions at root s=200 GeV Di-electron spectrum at mid-rapidity in p+p collisions at root s=200 GeV (en)
skos:notation	RIV/61389005:_____/12:00385117!RIV13-AV0-61389005
http://linked.open...avai/predkladatel	Ústav jaderné fyziky AV ČR, v.v.i.
http://linked.open...avai/riv/aktivita	I P S Z
http://linked.open...avai/riv/aktivity	I, P(LA09013), S, Z(MSM6840770039)
http://linked.open...iv/cisloPeriodika	2
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Šumbera, Michal Bielčíková, Jana Tlustý, David Kapitán, Jan Barnovská, Zuzana Chaloupka, Petr Rusnak, Jan Chung, Paul
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	131177
http://linked.open...ai/riv/idVysledku	RIV/61389005:_____/12:00385117
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	di-electron production; relativistic collision (en)
http://linked.open.../riv/klicoveSlovo	relativistic collision di-electron production
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[534F58135042]
http://linked.open...i/riv/nazevZdroje	Physical Review. C
http://linked.open...in/vavai/riv/obor	BG
http://linked.open...ichTvurcuVysledku	8 (xsd:int)
http://linked.open...cetTvurcuVysledku	369 (xsd:int)
http://linked.open...vavai/riv/projekt	Participation of the Czech Republic in the STAR experiment at Brookhaven National Laboratory, U.S.A.
http://linked.open...UplatneniVysledku	2012
http://linked.open...v/svazekPeriodika	86
http://linked.open...iv/tvurceVysledku	Bielčík, J. Bielčíková, Jana Šumbera, Michal Agakishiev, G. Aggarwal, M. M. Ahammed, Z. Barnovská, Zuzana Chaloupka, Petr Kapitán, Jan Tlustý, David Chung, Paul Alakhverdyants, A. V. Alford, J. Alekseev, I. Anderson, B. D. Hajková, O. Pachr, M. Rusňák, Jan Adamczyk, M.
http://linked.open...ain/vavai/riv/wos	000307274900004
http://linked.open...n/vavai/riv/zamer	Matematické, počítačové a experimentální metody ve fyzice
issn	0556-2813
number of pages	14 (xsd:int)
http://bibframe.org/vocab/doi	10.1103/PhysRevC.86.024906
is http://linked.open...avai/riv/vysledek of	Di-electron spectrum at mid-rapidity in p+p collisions at root s=200 GeV

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