Long- and short-range correlations and their event-scale dependence in high-multiplicity pp collisions at √s = 13 TeV

Acharya, S; Adamova, D.; Adolfson, J; Aggarwal, M.; Rinella, G.; Agnello, M.; Agrawal, N; Bufalino, S.; Concas, M.; Catalano, F.; Fecchio, P.; Balbino, A.

doi:10.1007/JHEP05(2021)290

Two-particle angular correlations are measured in high-multiplicity proton-proton collisions at 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) in the range 1 < pT< 4 GeV/c. Furthermore, the event-scale dependence is studied for the first time by requiring the presence of high-pT leading particles or jets for varying pT 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 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 dependency, while overestimating the event-scale dependency. [Figure not available: see fulltext.]

Long- and short-range correlations and their event-scale dependence in high-multiplicity pp collisions at √s = 13 TeV / Acharya, S; Adamova, D.; Adolfson, J; Aggarwal, M.; Rinella, G.; Agnello, M.; Agrawal, N; Bufalino, S.; Concas, M.; Catalano, F.; Fecchio, P.; Balbino, A.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - STAMPA. - 2021:5(2021). [10.1007/JHEP05(2021)290]

Titolo:	Long- and short-range correlations and their event-scale dependence in high-multiplicity pp collisions at √s = 13 TeV
Autori:	Acharya, S Adamova, D. Adolfson, J Aggarwal, M. Rinella, G. AGNELLO, MICHELANGELO Agrawal, N BUFALINO, STEFANIA CONCAS, MATTEO CATALANO, FABIO FECCHIO, PIETRO BALBINO, ALESSANDRO mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	2021
Rivista:	JOURNAL OF HIGH ENERGY PHYSICS
Digital Object Identifier (DOI):	http://dx.doi.org/10.1007/JHEP05(2021)290
Appare nelle tipologie:	1.1 Articolo in rivista

File in questo prodotto:

File	Descrizione	Tipologia	Licenza
LongShortCorrelations.pdf	Articolo principale	2a Post-print versione editoriale / Version of Record		Visibile a tuttiVisualizza/Apri

Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/11583/2962355

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

PORTO @ Archivio Istituzionale della Ricerca

File in questo prodotto: