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Description
  • Je prezentována studie dvoučásticových azimutálních korelací nabitých částic s příčnými hybnostmi (0.5<Pt<2.5 GeV/c) a pionů s vysokým příčným impulsem (1.2<Pt<3.5 GeV/c). Eliptický tok (v2) narůstá lineárně s příčným impulsem k hodnotě 10% pro Pt 2GeV/c. Pro Pt ~1.5 GeV/c, sklon závislosti klesá a naznačuje možnou saturaci při vysokých Pt. Dvoupionové azimutální korelace pro Pt>1.2 GeV/c převyšují hodnoty v2 o 60% v semicentrálních srážkách. Tato netoková komponenta je spojována s jetovými korelacemi v blízkém a odvráceném kónusu. Zatímco korelační pík v blízkém kónusu se s centralitou nemění, což odpovídá fragmentaci, pík v odvráceném kónusu se rozšiřuje a v centrálních srážkách mizí. (cs)
  • A study of elliptic flow and two-particle azimuthal correlations of charged particles (0.5<Pt<2.5 GeV/c) and high- Pt pions (1.2<Pt<3.5 GeV/c) in Pb + Au collisions at 158A GeV/c, close to midrapidity, is presented. Elliptic flow (v2) rises linearly with Pt to a value of about 10 %at 2 GeV/c. Beyond Pt ~1.5 GeV/c, the slope decreases and possibly indicates a v2 saturation at high Pt. Two-pion azimuthal anisotropies for Pt>1.2 GeV/c exceed the v2 values by about 60 % in semicentral collisions. This non-flow component is attributed to near-side and away-side jetlike correlations. While the near-side peak remains constant with centrality 0.23 +/-0.03 rad, as expected for fragmentation, the away-side peak experiences broadening and disappears in central collisions.
  • A study of elliptic flow and two-particle azimuthal correlations of charged particles (0.5<Pt<2.5 GeV/c) and high- Pt pions (1.2<Pt<3.5 GeV/c) in Pb + Au collisions at 158A GeV/c, close to midrapidity, is presented. Elliptic flow (v2) rises linearly with Pt to a value of about 10 %at 2 GeV/c. Beyond Pt ~1.5 GeV/c, the slope decreases and possibly indicates a v2 saturation at high Pt. Two-pion azimuthal anisotropies for Pt>1.2 GeV/c exceed the v2 values by about 60 % in semicentral collisions. This non-flow component is attributed to near-side and away-side jetlike correlations. While the near-side peak remains constant with centrality 0.23 +/-0.03 rad, as expected for fragmentation, the away-side peak experiences broadening and disappears in central collisions. (en)
Title
  • Semihard Scattering Unraveled from Collective Flow at the SPS
  • Semihard Scattering Unraveled from Collective Flow at the SPS (en)
  • Polo-tvrdé rozptylové procesy vyděleny z kolektivního toku na SPS (cs)
skos:prefLabel
  • Semihard Scattering Unraveled from Collective Flow at the SPS
  • Semihard Scattering Unraveled from Collective Flow at the SPS (en)
  • Polo-tvrdé rozptylové procesy vyděleny z kolektivního toku na SPS (cs)
skos:notation
  • RIV/68407700:21340/05:04114927!RIV06-MSM-21340___
http://linked.open.../vavai/riv/strany
  • 323 ; 327
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(1P04LA211)
http://linked.open...iv/cisloPeriodika
  • 4
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 542256
http://linked.open...ai/riv/idVysledku
  • RIV/68407700:21340/05:04114927
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • Polo-tvrdé rozptylové procesy (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • FR - Francouzská republika
http://linked.open...ontrolniKodProRIV
  • [B005843A9374]
http://linked.open...i/riv/nazevZdroje
  • European Physical Journal C
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 43
http://linked.open...iv/tvurceVysledku
  • Petráček, Vojtěch
  • Bielcikova, J.
issn
  • 1434-6044
number of pages
http://localhost/t...ganizacniJednotka
  • 21340
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