Emergence of long-range angular correlations in low-multiplicity proton-proton collisions
This Letter presents the measurement of near-side associated per-trigger yields, denoted ridge yields, from the analysis of angular correlations of charged hadrons in proton-proton collisions at √𝑠=13 TeV. Long-range ridge yields are extracted for pairs of charged particles with a pseudorapidity dif...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
2024
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| In: |
Physical review letters
Year: 2024, Jahrgang: 132, Heft: 17, Pages: 1-13 |
| ISSN: | 1079-7114 |
| DOI: | 10.1103/PhysRevLett.132.172302 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.1103/PhysRevLett.132.172302 Verlag, kostenfrei, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.132.172302 
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| Verfasserangaben: | S. Acharya et al. (ALICE Collaboration*) |
MARC
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| 245 | 1 | 0 | |a Emergence of long-range angular correlations in low-multiplicity proton-proton collisions |c S. Acharya et al. (ALICE Collaboration*) |
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| 500 | |a Veröffentlicht: 26. April 2024 | ||
| 500 | |a *ALICE Collaboration: S. Acharya, V. Anguelov, A. Berdnikova, L. Bergmann, A.G. Borquez Carcamo, J. Crkovska, M. Danisch, V.J.G. Feuillard, I. Fokin, P. Glässel, N.A. Grunwald, M. Kroesen, A. Nath, Y. Pachmayer, K. Reygers, R. Schicker, F. Schlepper, J.J. Seo, G. Skorodumovs, J. Stachel, S.F. Stiefelmaier, C.A. Van Veen, M.A. Völkl, B. Windelband, A. Yuncu, F. Zanone [und 1028 weitere Personen] | ||
| 500 | |a Gesehen am 09.07.2025 | ||
| 520 | |a This Letter presents the measurement of near-side associated per-trigger yields, denoted ridge yields, from the analysis of angular correlations of charged hadrons in proton-proton collisions at √=13 TeV. Long-range ridge yields are extracted for pairs of charged particles with a pseudorapidity difference of 1.4<|Δ|<1.8 and a transverse momentum of 1<T<2 GeV/, as a function of the charged-particle multiplicity measured at midrapidity. This Letter extends the measurements of the ridge yield to the low multiplicity region, where in hadronic collisions it is typically conjectured that a strongly interacting medium is unlikely to be formed. The precision of the new low multiplicity results allows for the first direct quantitative comparison with the results obtained in e+e− collisions at √ =91 GeV and √=183-209 GeV, where initial-state effects such as preequilibrium dynamics and collision geometry are not expected to play a role. In the multiplicity range 8 ≲⟨ch⟩ ≲24 where the e+e− results have good precision, the measured ridge yields in collisions are substantially larger than the limits set in e+e− annihilations. Consequently, the findings presented in this Letter suggest that the processes involved in e+e− annihilations do not contribute significantly to the emergence of long-range correlations in collisions. | ||
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