About: Elliptic flow of identified hadrons in Au + Au collisions at root s(NN)=7.7-62.4 GeV     Goto   Sponge   NotDistinct   Permalink

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  • Measurements of the elliptic flow, upsilon(2), of identified hadrons (pi(+/-), K-+/-, K-s(0), p, (p) over bar, phi, Lambda, (Lambda) over bar, Xi(-), (Xi) over bar (+), Omega(-), (Omega) over bar (+)) in Au + Au collisions at root s(NN) = 7.7, 11.5, 19.6, 27, 39, and 62.4 GeV are presented. The measurements were done at midrapidity using the time-projection chamber and the time-of-flight detectors of the Solenoidal Tracker at RHIC experiment during the beam-energy scan program at Relativistic Heavy Ion Collider. A significant difference in the upsilon(2) values for particles and the corresponding antiparticles was observed at all transverse momenta for the first time. The difference increases with decreasing center-of-mass energy, root s(NN) (or increasing baryon chemical potential, mu(B)), and is larger for the baryons as compared to the mesons. This implies that particles and antiparticles are no longer consistent with the universal number-of-constituent quark (NCQ) scaling of upsilon(2) that was observed at root s(NN) = 200 GeV. However, for the selected group of particles (p(+), K+, K-s(0), p, Lambda, Xi(-), Omega(-)) NCQ scaling at (m(T) - m(0))/n(q) > 0.4 GeV/c(2) is not violated within +/- 10%. The upsilon(2) values for f mesons at 7.7 and 11.5 GeV are approximately two standard deviations from the trend defined by the other hadrons at the highest measured p(T) values.
  • Measurements of the elliptic flow, upsilon(2), of identified hadrons (pi(+/-), K-+/-, K-s(0), p, (p) over bar, phi, Lambda, (Lambda) over bar, Xi(-), (Xi) over bar (+), Omega(-), (Omega) over bar (+)) in Au + Au collisions at root s(NN) = 7.7, 11.5, 19.6, 27, 39, and 62.4 GeV are presented. The measurements were done at midrapidity using the time-projection chamber and the time-of-flight detectors of the Solenoidal Tracker at RHIC experiment during the beam-energy scan program at Relativistic Heavy Ion Collider. A significant difference in the upsilon(2) values for particles and the corresponding antiparticles was observed at all transverse momenta for the first time. The difference increases with decreasing center-of-mass energy, root s(NN) (or increasing baryon chemical potential, mu(B)), and is larger for the baryons as compared to the mesons. This implies that particles and antiparticles are no longer consistent with the universal number-of-constituent quark (NCQ) scaling of upsilon(2) that was observed at root s(NN) = 200 GeV. However, for the selected group of particles (p(+), K+, K-s(0), p, Lambda, Xi(-), Omega(-)) NCQ scaling at (m(T) - m(0))/n(q) > 0.4 GeV/c(2) is not violated within +/- 10%. The upsilon(2) values for f mesons at 7.7 and 11.5 GeV are approximately two standard deviations from the trend defined by the other hadrons at the highest measured p(T) values. (en)
Title
  • Elliptic flow of identified hadrons in Au + Au collisions at root s(NN)=7.7-62.4 GeV
  • Elliptic flow of identified hadrons in Au + Au collisions at root s(NN)=7.7-62.4 GeV (en)
skos:prefLabel
  • Elliptic flow of identified hadrons in Au + Au collisions at root s(NN)=7.7-62.4 GeV
  • Elliptic flow of identified hadrons in Au + Au collisions at root s(NN)=7.7-62.4 GeV (en)
skos:notation
  • RIV/68407700:21340/13:00208079!RIV14-MSM-21340___
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • I, P(GA13-20841S), S, Z(MSM6840770039)
http://linked.open...iv/cisloPeriodika
  • 1
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
  • 72603
http://linked.open...ai/riv/idVysledku
  • RIV/68407700:21340/13:00208079
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • ELATIVISTIC NUCLEAR COLLISIONS; HEAVY-ION COLLISIONS; QUARK-GLUON PLASMA; STRANGE PARTICLES; STAR; COLLABORATION; ANISOTROPY; SIGNATURE; ENERGY; MODELS (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • US - Spojené státy americké
http://linked.open...ontrolniKodProRIV
  • [F60063562F98]
http://linked.open...i/riv/nazevZdroje
  • Physical Review 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
  • 88
http://linked.open...iv/tvurceVysledku
  • Agakishiev, G.
  • Aggarwal, M. M.
  • Ahammed, Z.
  • Chaloupka, Petr
  • Bielčík, Jaroslav
  • Pachr, Miloš
  • Adamczyk, L.
  • Hájková, Olga
  • Adkins, J. K.
http://linked.open...ain/vavai/riv/wos
  • 000321270800003
http://linked.open...n/vavai/riv/zamer
issn
  • 0556-2813
number of pages
http://bibframe.org/vocab/doi
  • 10.1103/PhysRevC.88.014902
http://localhost/t...ganizacniJednotka
  • 21340
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