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
(2018) In Physical Review C 98(1).- 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... (More)
- 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. (Less)
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- author
- organization
- publishing date
- 2018
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review C
- volume
- 98
- issue
- 1
- publisher
- American Physical Society
- external identifiers
-
- scopus:85050823469
- ISSN
- 2469-9985
- DOI
- 10.1103/PhysRevC.98.014912
- language
- English
- LU publication?
- yes
- id
- a54d3552-c866-450f-8c14-1e67d3e80570
- date added to LUP
- 2018-08-17 15:16:25
- date last changed
- 2023-04-08 15:54:09
@article{a54d3552-c866-450f-8c14-1e67d3e80570, 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.}}, author = {{Adare, A. and Aidala, C. and Ajitanand, N N and Akiba, Y. and Al-Bataineh, H and Alexander, J and Christiansen, Peter and Gustafsson, Hans-Åke and Haslum, Eva and Oskarsson, Anders and Rosendahl, Sarah and Silvermyr, David and Stenlund, Evert and Zhou, L}}, issn = {{2469-9985}}, language = {{eng}}, number = {{1}}, publisher = {{American Physical Society}}, series = {{Physical Review C}}, title = {{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}}, url = {{http://dx.doi.org/10.1103/PhysRevC.98.014912}}, doi = {{10.1103/PhysRevC.98.014912}}, volume = {{98}}, year = {{2018}}, }