Measurement of emission-angle anisotropy via long-range angular correlations with high- pT hadrons in d+Au and p+p collisions at s NN =200 GeV

PHENIX Collaboration

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We present measurements of two-particle angular correlations between high-transverse-momentum (2<pT<11 GeV/c) π0 observed at midrapidity (|η|<0.35) and particles produced either at forward (3.1<η<3.9) or backward (-3.7<η<-3.1) rapidity in d+Au and p+p collisions at sNN=200 GeV. The azimuthal angle correlations for particle pairs with this large rapidity gap in the Au-going direction exhibit a characteristic structure that persists up to pT≈6 GeV/c and which strongly depends on collision centrality, which is a similar characteristic to the hydrodynamical particle flow in A+A collisions. The structure is absent in the d-going direction as well as in p+p collisions, in the transverse-momentum range studied. The results indicate that the structure is shifted in the Au-going direction toward more central collisions, similar to the charged-particle pseudorapidity distributions.

Original languageEnglish
Article number014912
JournalPhysical Review C
Volume98
Issue number1
DOIs
Publication statusPublished - 2018 Jul 26

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angular correlation
hadrons
anisotropy
collisions
transverse momentum
charged particles

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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Measurement of emission-angle anisotropy via long-range angular correlations with high- pT hadrons in d+Au and p+p collisions at s NN =200 GeV. / PHENIX Collaboration.

In: Physical Review C, Vol. 98, No. 1, 014912, 26.07.2018.

Research output: Contribution to journalArticle

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