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Long- and short-range correlations and their event-scale dependence in high-multiplicity pp collisions at $$ \sqrt{s} $$ = 13 TeVстатья
Статья опубликована в высокорейтинговом журнале
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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 20 октября 2021 г.
- Авторы: ALICE C., Malinina L.
- Журнал: Journal of High Energy Physics
- Том: 2021
- Номер: 5
- Год издания: 2021
- Издательство: IOP Publishing
- Местоположение издательства: [Bristol, UK], England
- Первая страница: 290
- DOI: 10.1007/jhep05(2021)290
- Аннотация: Two-particle angular correlations are measured in high-multiplicity proton-proton collisions at s \sqrt{s} 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_{T}T) in the range 1 < pT_{T}T< 4 GeV/c. Furthermore, the event-scale dependence is studied for the first time by requiring the presence of high-pT_{T}T leading particles or jets for varying pT_{T}T 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_{T}T 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_{T}T dependency, while overestimating the event-scale dependency.[graphic not available: see fulltext]
- Добавил в систему: Малинина Людмила Владимировна