About: Long-range angular correlations of pi, K and p in p-Pb collisions at root s(NN)=5.02 TeV     Goto   Sponge   NotDistinct   Permalink

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Description
  • Angular correlations between unidentified charged trigger particles and various species of charged associated particles (unidentified particles, pions, kaons, protons and antiprotons) are measured by the ALICE detector in p-Pb collisions at a nucleon-nucleon centre-of-mass energy of 5.02 TeV in the transverse-momentum range 0.3 < p(T) < 4 GeV/c. The correlations expressed as associated yield per trigger particle are obtained in the pseudorapidity range vertical bar n(lab)vertical bar < 0.8. Fourier coefficients are extracted from the long-range correlations projected onto the azimuthal angle difference and studied as a function of p(T) and in intervals of event multiplicity. In high-multiplicity events, the second-order coefficient for protons, 4, is observed to be smaller than that for pions, v(2)(pi), up to about p(T) = 2 GeV/c. To reduce correlations due to jets, the per-trigger yield measured in low-multiplicity events is subtracted from that in high-multiplicity events. A two-ridge structure is obtained for all particle species. The Fourier decomposition of this structure shows that the second-order coefficients for pions and kaons are similar. The v(2)(p) is found to be smaller at low P-T and larger at higher p(T) than v(2)(pi), with a crossing occurring at about 2 GeV/c. This is qualitatively similar to the elliptic-flow pattern observed in heavy-ion collisions. A mass ordering effect at low transverse momenta is consistent with expectations from hydrodynamic model calculations assuming a collectively expanding system.
  • Angular correlations between unidentified charged trigger particles and various species of charged associated particles (unidentified particles, pions, kaons, protons and antiprotons) are measured by the ALICE detector in p-Pb collisions at a nucleon-nucleon centre-of-mass energy of 5.02 TeV in the transverse-momentum range 0.3 < p(T) < 4 GeV/c. The correlations expressed as associated yield per trigger particle are obtained in the pseudorapidity range vertical bar n(lab)vertical bar < 0.8. Fourier coefficients are extracted from the long-range correlations projected onto the azimuthal angle difference and studied as a function of p(T) and in intervals of event multiplicity. In high-multiplicity events, the second-order coefficient for protons, 4, is observed to be smaller than that for pions, v(2)(pi), up to about p(T) = 2 GeV/c. To reduce correlations due to jets, the per-trigger yield measured in low-multiplicity events is subtracted from that in high-multiplicity events. A two-ridge structure is obtained for all particle species. The Fourier decomposition of this structure shows that the second-order coefficients for pions and kaons are similar. The v(2)(p) is found to be smaller at low P-T and larger at higher p(T) than v(2)(pi), with a crossing occurring at about 2 GeV/c. This is qualitatively similar to the elliptic-flow pattern observed in heavy-ion collisions. A mass ordering effect at low transverse momenta is consistent with expectations from hydrodynamic model calculations assuming a collectively expanding system. (en)
Title
  • Long-range angular correlations of pi, K and p in p-Pb collisions at root s(NN)=5.02 TeV
  • Long-range angular correlations of pi, K and p in p-Pb collisions at root s(NN)=5.02 TeV (en)
skos:prefLabel
  • Long-range angular correlations of pi, K and p in p-Pb collisions at root s(NN)=5.02 TeV
  • Long-range angular correlations of pi, K and p in p-Pb collisions at root s(NN)=5.02 TeV (en)
skos:notation
  • RIV/68378271:_____/13:00424874!RIV14-MSM-68378271
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • I, P(LG13031), P(LK11209), S, Z(MSM6840770039)
http://linked.open...iv/cisloPeriodika
  • 1-3
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
  • 85371
http://linked.open...ai/riv/idVysledku
  • RIV/68378271:_____/13:00424874
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • transverse momentum; heavy ion collisions; ALICE (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • NL - Nizozemsko
http://linked.open...ontrolniKodProRIV
  • [E597C48928A0]
http://linked.open...i/riv/nazevZdroje
  • Physics Letters. B
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
  • 726
http://linked.open...iv/tvurceVysledku
  • Adamová, Dagmar
  • Bielčík, J.
  • Bielčíková, Jana
  • Kushpil, Svetlana
  • Kushpil, Vasilij
  • Křížek, Filip
  • Mareš, Jiří A.
  • Wagner, V.
  • Závada, Petr
  • Špaček, M.
  • Šumbera, Michal
  • Abelev, B.
  • Adam, J.
  • Čepila, J.
  • Pospíšil, V.
  • Pachr, M.
  • Krus, M.
  • Křelina, M.
  • Petráček, V.
  • Petráň, M.
  • Vajzer, Michal
  • Zach, Č.
  • Šmakal, R.
  • Kučera, Vít
  • Schulc, M.
  • Kravčáková, A.
http://linked.open...ain/vavai/riv/wos
  • 000326482200018
http://linked.open...n/vavai/riv/zamer
issn
  • 0370-2693
number of pages
http://bibframe.org/vocab/doi
  • 10.1016/j.physletb.2013.08.024
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