Singh, Rohit Kumar (2025) Correlations between anisotropy flow and mean transverse momentum using subevent cumulants in small systems at CMS. Il nuovo cimento C, 48 (1). pp. 1-5. ISSN 1826-9885
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Abstract
A measurement of correlations between mean transverse momen tum and multiparticle cumulants in pp at √s = 13 TeV, proton-lead (pPb) at √s NN = 8.16 TeV and peripheral lead-lead (PbPb) collisions at √s NN = 5.02 TeV are presented for Fourier harmonics n =2andn = 3. Notably, sign changes in modified Pearson correlators are observed in pp and pPb systems as a function of charged particle multiplicity, but these changes disappear with increased pseudo-rapidity gap. Four-particle cumulants (cn{4}) correlated with mean transverse momentum (pT) also show no sign change, suggesting a reduced non-flow contribution. Further studies of non-flow using the color-glass condensate model is required to understand the origin of azimuthal anisotropy in small systems. Negative correlations between c3{2} and mean pT are consistent across all collision systems. Comparisons with hydrodynamic predictions in pPb indicate a better fit with a smaller initial fireball.
| Item Type: | Article |
|---|---|
| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 24 Mar 2025 15:20 |
| Last Modified: | 24 Mar 2025 15:20 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/23501 |
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