Long- and short-range correlations and their event-scale dependence in high-multiplicity pp collisions at √s = 13 TeV
(2021) In Journal of High Energy Physics 2021(5).- Abstract
- Two-particle angular correlations are measured in high-multiplicity proton-proton collisions at s = 13 TeV by the ALICE Collaboration. The yields of particle pairs at short-(∆η ∼ 0) and long-range (1.6 < |∆η| < 1.8) in pseudorapidity are extracted on the near-side (∆φ ∼ 0). They are reported as a function of transverse momentum (pT) in the range 1 < pT< 4 GeV/c. Furthermore, the event-scale dependence is studied for the first time by requiring the presence of high-pT leading particles or jets for varying pT thresholds. The results demonstrate that the long-range “ridge” yield, possibly related to the collective behavior of the system, is present in events with high-pT processes as well. The magnitudes of the short- and... (More)
- Two-particle angular correlations are measured in high-multiplicity proton-proton collisions at s = 13 TeV by the ALICE Collaboration. The yields of particle pairs at short-(∆η ∼ 0) and long-range (1.6 < |∆η| < 1.8) in pseudorapidity are extracted on the near-side (∆φ ∼ 0). They are reported as a function of transverse momentum (pT) in the range 1 < pT< 4 GeV/c. Furthermore, the event-scale dependence is studied for the first time by requiring the presence of high-pT leading particles or jets for varying pT thresholds. The results demonstrate that the long-range “ridge” yield, possibly related to the collective behavior of the system, is present in events with high-pT processes as well. The magnitudes of the short- and long-range yields are found to grow with the event scale. The results are compared to EPOS LHC and PYTHIA 8 calculations, with and without string-shoving interactions. It is found that while both models describe the qualitative trends in the data, calculations from EPOS LHC show a better quantitative agreement for the pT dependency, while overestimating the event-scale dependency. [Figure not available: see fulltext.] © 2021, The Author(s). (Less)
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https://lup.lub.lu.se/record/0e603c70-9e90-4403-87e5-8ffd8013924b
- author
- author collaboration
- organization
- publishing date
- 2021-05-31
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Heavy Ion Experiments
- in
- Journal of High Energy Physics
- volume
- 2021
- issue
- 5
- article number
- 290
- publisher
- Springer
- external identifiers
-
- scopus:85107537579
- ISSN
- 1029-8479
- DOI
- 10.1007/JHEP05(2021)290
- language
- English
- LU publication?
- yes
- id
- 0e603c70-9e90-4403-87e5-8ffd8013924b
- date added to LUP
- 2021-06-29 14:23:31
- date last changed
- 2023-04-02 08:04:47
@article{0e603c70-9e90-4403-87e5-8ffd8013924b, abstract = {{Two-particle angular correlations are measured in high-multiplicity proton-proton collisions at s = 13 TeV by the ALICE Collaboration. The yields of particle pairs at short-(∆η ∼ 0) and long-range (1.6 < |∆η| < 1.8) in pseudorapidity are extracted on the near-side (∆φ ∼ 0). They are reported as a function of transverse momentum (pT) in the range 1 < pT< 4 GeV/c. Furthermore, the event-scale dependence is studied for the first time by requiring the presence of high-pT leading particles or jets for varying pT thresholds. The results demonstrate that the long-range “ridge” yield, possibly related to the collective behavior of the system, is present in events with high-pT processes as well. The magnitudes of the short- and long-range yields are found to grow with the event scale. The results are compared to EPOS LHC and PYTHIA 8 calculations, with and without string-shoving interactions. It is found that while both models describe the qualitative trends in the data, calculations from EPOS LHC show a better quantitative agreement for the pT dependency, while overestimating the event-scale dependency. [Figure not available: see fulltext.] © 2021, The Author(s).}}, author = {{Acharya, S and Adolfsson, Jonatan and Basu, Sumit and Christiansen, Peter and Matonoha, Oliver and Nassirpour, Adrian and Ohlson, Alice and Oskarsson, Anders and Richert, Tuva and Vazquez Rueda, Omar and Silvermyr, David and Zurlo, N}}, issn = {{1029-8479}}, keywords = {{Heavy Ion Experiments}}, language = {{eng}}, month = {{05}}, number = {{5}}, publisher = {{Springer}}, series = {{Journal of High Energy Physics}}, title = {{Long- and short-range correlations and their event-scale dependence in high-multiplicity pp collisions at √s = 13 TeV}}, url = {{http://dx.doi.org/10.1007/JHEP05(2021)290}}, doi = {{10.1007/JHEP05(2021)290}}, volume = {{2021}}, year = {{2021}}, }