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 √ sNN = 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 < pT < 4 GeV/c. Flow coefcients are extracted for the long-range correlations (1.6 < |∆η| < 1.8) in various high-multiplicity event classes using the low-multiplicity template ft method. The method is used to subtract the enhanced yield of away-side jet fragments in high-multiplicity events. These results show decreasing fow signals toward lower multiplicity events. Furthermore, the fow coefcients for events with hard probes, such as jets or leading particles, do not exhibit any signifcant changes compared to those obtained from high-multiplicity events without any specifc 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.

Null, N., Acharya, S., Adamová, D., Aglieri Rinella, G., Agnello, M., Agrawal, N., et al. (2024). Multiplicity and event-scale dependent fow 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), 1-35 [10.1007/jhep03(2024)092].

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

Agrawal, N.;Alici, A.;Arcelli, S.;Bellini, F.;Colocci, M.;Ercolessi, F.;Jacazio, N.;Malfattore, G.;Romanenko, G.;Rubini, N.;Scioli, G.;Strazzi, S.;
2024

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 √ sNN = 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 < pT < 4 GeV/c. Flow coefcients are extracted for the long-range correlations (1.6 < |∆η| < 1.8) in various high-multiplicity event classes using the low-multiplicity template ft method. The method is used to subtract the enhanced yield of away-side jet fragments in high-multiplicity events. These results show decreasing fow signals toward lower multiplicity events. Furthermore, the fow coefcients for events with hard probes, such as jets or leading particles, do not exhibit any signifcant changes compared to those obtained from high-multiplicity events without any specifc 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.
2024
Null, N., Acharya, S., Adamová, D., Aglieri Rinella, G., Agnello, M., Agrawal, N., et al. (2024). Multiplicity and event-scale dependent fow 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), 1-35 [10.1007/jhep03(2024)092].
Null, Null; Acharya, S.; Adamová, D.; Aglieri Rinella, G.; Agnello, M.; Agrawal, N.; Ahammed, Z.; Ahmad, S.; Ahn, S. U.; Ahuja, I.; Akindinov, A.; Al-...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/995414
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