Multiplicity and event-scale dependent flow and jet fragmentation in pp collisions at √s=13 TeV and in p-Pb collisions at √sNN=5.02 TeV



Acharya, S, Adamova, D, Rinella, G Aglieri, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Ahuja, I, Akindinov, A
et al (show 1044 more authors) (2024) Multiplicity and event-scale dependent flow and jet fragmentation in pp collisions at √s=13 TeV and in p-Pb collisions at √sNN=5.02 TeV JOURNAL OF HIGH ENERGY PHYSICS, 2024 (3). 92-. ISSN 1126-6708, 1029-8479

Access the full-text of this item by clicking on the Open Access link.

Abstract

Long- and short-range correlations for pairs of charged particles are studied via two-particle angular correlations in pp collisions at s = 13 TeV and p–Pb collisions at s<inf>NN</inf> = 5.02 TeV. The correlation functions are measured as a function of relative azimuthal angle ∆φ and pseudorapidity separation ∆η for pairs of primary charged particles within the pseudorapidity interval |η| < 0.9 and the transverse-momentum interval 1 < p<inf>T</inf>< 4 GeV/c. Flow coefficients are extracted for the long-range correlations (1.6 < |∆η| < 1.8) in various high-multiplicity event classes using the low-multiplicity template fit method. The method is used to subtract the enhanced yield of away-side jet fragments in high-multiplicity events. These results show decreasing flow signals toward lower multiplicity events. Furthermore, the flow coefficients for events with hard probes, such as jets or leading particles, do not exhibit any significant changes compared to those obtained from high-multiplicity events without any specific event selection criteria. The results are compared with hydrodynamic-model calculations, and it is found that a better understanding of the initial conditions is necessary to describe the results, particularly for low-multiplicity events.

Item Type: Article
Uncontrolled Keywords: Collective Flow, Hadron-Hadron Scattering, Jets
Depositing User: Symplectic Admin
Date Deposited: 13 Aug 2024 13:35
Last Modified: 22 May 2026 16:36
DOI: 10.1007/JHEP03(2024)092
Open Access URL: https://doi.org/10.1007/JHEP03(2024)092
Related Websites:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3183682
Disclaimer: The University of Liverpool is not responsible for content contained on other websites from links within repository metadata. Please contact us if you notice anything that appears incorrect or inappropriate.