About: Central Pb+Pb collisions at 158 A GeV/c studied by pion-pion interferometry.

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About: Central Pb+Pb collisions at 158 A GeV/c studied by pion-pion interferometry. Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Two-particle correlations have been measured for identifiedpi.sup.- from central 158 A GeV Pb+Pb collisions and fittedradii of about 7 fm in all dimensions have been obtained. Amulti-dimensional study of the radii as a function of k.sup.T is presented, including a full correction for the resolution effects of the apparatus. The cross term R.sub.2 /out-lonng/ of the standard fit in the Longitudinally CoMoving System (LCMS) and the v.sup.L parameter of the generalised Yano-Koonin fit are compatible with 0, suggesting that the source undergoes a boost invariant expansion. The shapes of thecorrelation functions in Q.sup./inv/ and Q.sup./space/=sqrt/Q.sub.2.sup.x+Q.sub.2.sup.y+Q.sub.2.sup.z/ have been analyzed in detail. They are not Gaussian but better representedby exponentials. As a consequence, fitting Gaussians to these correlation functions may produce different radii depending on the acceptance of the experimental setup used for themeasurement. Two-particle correlations have been measured for identifiedpi.sup.- from central 158 A GeV Pb+Pb collisions and fittedradii of about 7 fm in all dimensions have been obtained. Amulti-dimensional study of the radii as a function of k.sup.T is presented, including a full correction for the resolution effects of the apparatus. The cross term R.sub.2 /out-lonng/ of the standard fit in the Longitudinally CoMoving System (LCMS) and the v.sup.L parameter of the generalised Yano-Koonin fit are compatible with 0, suggesting that the source undergoes a boost invariant expansion. The shapes of thecorrelation functions in Q.sup./inv/ and Q.sup./space/=sqrt/Q.sub.2.sup.x+Q.sub.2.sup.y+Q.sub.2.sup.z/ have been analyzed in detail. They are not Gaussian but better representedby exponentials. As a consequence, fitting Gaussians to these correlation functions may produce different radii depending on the acceptance of the experimental setup used for themeasurement. (en)
Title	Central Pb+Pb collisions at 158 A GeV/c studied by pion-pion interferometry. Central Pb+Pb collisions at 158 A GeV/c studied by pion-pion interferometry. (en)
skos:prefLabel	Central Pb+Pb collisions at 158 A GeV/c studied by pion-pion interferometry. Central Pb+Pb collisions at 158 A GeV/c studied by pion-pion interferometry. (en)
skos:notation	RIV/61389005:_____/00:49000284!RIV/2003/AV0/A49003/N
http://linked.open.../vavai/riv/strany	445;451
http://linked.open...avai/riv/aktivita	Z
http://linked.open...avai/riv/aktivity	Z(AV0Z1048901)
http://linked.open...iv/cisloPeriodika	N/A
http://linked.open...vai/riv/dodaniDat	2003
http://linked.open...aciTvurceVysledku	Rak, Jan Petráček, Vojtěch Šumbera, Michal Kugler, Andrej Eliseev, Sergej Hřivnáčová, Ivana Pachr, Miloš
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	706245
http://linked.open...ai/riv/idVysledku	RIV/61389005:_____/00:49000284
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	N/A (en)
http://linked.open.../riv/klicoveSlovo	N/A
http://linked.open...odStatuVydavatele	DE - Spolková republika Německo
http://linked.open...ontrolniKodProRIV	[B3DAB9631B4D]
http://linked.open...i/riv/nazevZdroje	European Physical Journal. C
http://linked.open...in/vavai/riv/obor	BG
http://linked.open...ichTvurcuVysledku	7 (xsd:int)
http://linked.open...cetTvurcuVysledku	20 (xsd:int)
http://linked.open...ocetUcastnikuAkce	0 (xsd:int)
http://linked.open...nichUcastnikuAkce	0 (xsd:int)
http://linked.open...UplatneniVysledku	2000
http://linked.open...v/svazekPeriodika	16
http://linked.open...iv/tvurceVysledku	Petráček, Vojtěch Yokota, Y. Šumbera, Michal Kugler, Andrej Aggarwal, M. M. Angelis, A. L. S. Antonenko, V. Astakhov, V. Hřivnáčová, Ivana Pachr, Miloš Rak, Jan Eliseev, Sergej Avdeichikov, V. Svensson, M. D. Vinogradov, A. Vodopyanov, A. Young, G. R. Trivedi, M. D. Viyogi, Y. P. Twenhöfel, C.
http://linked.open...n/vavai/riv/zamer	Theoretical and experimental investigation of atomic nuclei and exploitation of nuclear methods in interdisciplinary research
issn	1434-6001
number of pages	7 (xsd:int)

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