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- Publisher Website: 10.1103/PhysRevLett.131.162301
- PMID: 37925689
- WOS: WOS:001102759000001
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Article: Measurement of the Sensitivity of Two-Particle Correlations in pp Collisions to the Presence of Hard Scatterings
Title | Measurement of the Sensitivity of Two-Particle Correlations in pp Collisions to the Presence of Hard Scatterings |
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Authors | |
Issue Date | 16-Oct-2023 |
Publisher | American Physical Society |
Citation | Physical Review Letters, 2023, v. 131, n. 16, p. 1-21 How to Cite? |
Abstract | A key open question in the study of multiparticle production in high-energy pp collisions is the relationship between the "ridge"-i.e., the observed azimuthal correlations between particles in the underlying event that extend over all rapidities-and hard or semihard scattering processes. In particular, it is not known whether jets or their soft fragments are correlated with particles in the underlying event. To address this question, two-particle correlations are measured in pp collisions at collected by the ATLAS experiment at the LHC, with an integrated luminosity of 15.8 pb-1, in two different configurations. In the first case, charged particles associated with jets are excluded from the correlation analysis, while in the second case, correlations are measured between particles within jets and charged particles from the underlying event. Second-order flow coefficients, v2, are presented as a function of event multiplicity and transverse momentum. These measurements show that excluding particles associated with jets does not affect the measured correlations. Moreover, particles associated with jets do not exhibit any significant azimuthal correlations with the underlying event, ruling out hard processes contributing to the ridge. |
Persistent Identifier | http://hdl.handle.net/10722/340009 |
ISSN | 2021 Impact Factor: 9.185 2020 SCImago Journal Rankings: 3.688 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Aad, G | - |
dc.contributor.author | Abbott, B | - |
dc.contributor.author | Abeling, K | - |
dc.contributor.author | Tam, Kai Chung | - |
dc.contributor.author | Huang, Shuhui | - |
dc.contributor.author | Paredes Hernandez, Daniela Katherinne | - |
dc.contributor.author | Tu, Yanjun | - |
dc.contributor.author | ATLAS Collaboration, | - |
dc.date.accessioned | 2024-03-11T10:40:59Z | - |
dc.date.available | 2024-03-11T10:40:59Z | - |
dc.date.issued | 2023-10-16 | - |
dc.identifier.citation | Physical Review Letters, 2023, v. 131, n. 16, p. 1-21 | - |
dc.identifier.issn | 0031-9007 | - |
dc.identifier.uri | http://hdl.handle.net/10722/340009 | - |
dc.description.abstract | <p>A key open question in the study of multiparticle production in high-energy pp collisions is the relationship between the "ridge"-i.e., the observed azimuthal correlations between particles in the underlying event that extend over all rapidities-and hard or semihard scattering processes. In particular, it is not known whether jets or their soft fragments are correlated with particles in the underlying event. To address this question, two-particle correlations are measured in pp collisions at collected by the ATLAS experiment at the LHC, with an integrated luminosity of 15.8 pb-1, in two different configurations. In the first case, charged particles associated with jets are excluded from the correlation analysis, while in the second case, correlations are measured between particles within jets and charged particles from the underlying event. Second-order flow coefficients, v2, are presented as a function of event multiplicity and transverse momentum. These measurements show that excluding particles associated with jets does not affect the measured correlations. Moreover, particles associated with jets do not exhibit any significant azimuthal correlations with the underlying event, ruling out hard processes contributing to the ridge. </p> | - |
dc.language | eng | - |
dc.publisher | American Physical Society | - |
dc.relation.ispartof | Physical Review Letters | - |
dc.rights | This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. | - |
dc.title | Measurement of the Sensitivity of Two-Particle Correlations in pp Collisions to the Presence of Hard Scatterings | - |
dc.type | Article | - |
dc.identifier.doi | 10.1103/PhysRevLett.131.162301 | - |
dc.identifier.pmid | 37925689 | - |
dc.identifier.volume | 131 | - |
dc.identifier.issue | 16 | - |
dc.identifier.spage | 1 | - |
dc.identifier.epage | 21 | - |
dc.identifier.eissn | 1079-7114 | - |
dc.identifier.isi | WOS:001102759000001 | - |
dc.publisher.place | COLLEGE PK | - |
dc.identifier.issnl | 0031-9007 | - |