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Article: Measurement of soft-drop jet observables in pp collisions with the ATLAS detector at √s=13 TeV

TitleMeasurement of soft-drop jet observables in pp collisions with the ATLAS detector at √s=13 TeV
Authors
Issue Date2020
PublisherAmerican Physical Society. The Journal's web site is located at http://journals.aps.org/prd/
Citation
Physical Review D: covering particles, fields, gravitation, and cosmology, 2020, v. 101 n. 5, article no. 052007 How to Cite?
AbstractJet substructure quantities are measured using jets groomed with the soft-drop grooming procedure in dijet events from 32.9 fb-1 of pp collisions collected with the ATLAS detector at √s=13 TeV. These observables are sensitive to a wide range of QCD phenomena. Some observables, such as the jet mass and opening angle between the two subjets which pass the soft-drop condition, can be described by a high-order (resummed) series in the strong coupling constant αS. Other observables, such as the momentum sharing between the two subjets, are nearly independent of αS. These observables can be constructed using all interacting particles or using only charged particles reconstructed in the inner tracking detectors. Track-based versions of these observables are not collinear safe, but are measured more precisely, and universal nonperturbative functions can absorb the collinear singularities. The unfolded data are directly compared with QCD calculations and hadron-level Monte Carlo simulations. The measurements are performed in different pseudorapidity regions, which are then used to extract quark and gluon jet shapes using the predicted quark and gluon fractions in each region. All of the parton shower and analytical calculations provide an excellent description of the data in most regions of phase space.
Persistent Identifierhttp://hdl.handle.net/10722/286262
ISSN
2020 Impact Factor: 5.296
2020 SCImago Journal Rankings: 1.887
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorATLAS Collaboration-
dc.contributor.authorLo, CY-
dc.contributor.authorParedes Hernandez, D-
dc.contributor.authorTu, Y-
dc.date.accessioned2020-08-31T07:01:28Z-
dc.date.available2020-08-31T07:01:28Z-
dc.date.issued2020-
dc.identifier.citationPhysical Review D: covering particles, fields, gravitation, and cosmology, 2020, v. 101 n. 5, article no. 052007-
dc.identifier.issn2470-0010-
dc.identifier.urihttp://hdl.handle.net/10722/286262-
dc.description.abstractJet substructure quantities are measured using jets groomed with the soft-drop grooming procedure in dijet events from 32.9 fb-1 of pp collisions collected with the ATLAS detector at √s=13 TeV. These observables are sensitive to a wide range of QCD phenomena. Some observables, such as the jet mass and opening angle between the two subjets which pass the soft-drop condition, can be described by a high-order (resummed) series in the strong coupling constant αS. Other observables, such as the momentum sharing between the two subjets, are nearly independent of αS. These observables can be constructed using all interacting particles or using only charged particles reconstructed in the inner tracking detectors. Track-based versions of these observables are not collinear safe, but are measured more precisely, and universal nonperturbative functions can absorb the collinear singularities. The unfolded data are directly compared with QCD calculations and hadron-level Monte Carlo simulations. The measurements are performed in different pseudorapidity regions, which are then used to extract quark and gluon jet shapes using the predicted quark and gluon fractions in each region. All of the parton shower and analytical calculations provide an excellent description of the data in most regions of phase space.-
dc.languageeng-
dc.publisherAmerican Physical Society. The Journal's web site is located at http://journals.aps.org/prd/-
dc.relation.ispartofPhysical Review D: covering particles, fields, gravitation, and cosmology-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.titleMeasurement of soft-drop jet observables in pp collisions with the ATLAS detector at √s=13 TeV-
dc.typeArticle-
dc.identifier.emailLo, CY: samuel3@hku.hk-
dc.identifier.emailParedes Hernandez, D: dparedes@hku.hk-
dc.identifier.emailTu, Y: yanjuntu@hku.hk-
dc.identifier.authorityTu, Y=rp01971-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1103/PhysRevD.101.052007-
dc.identifier.scopuseid_2-s2.0-85083566475-
dc.identifier.hkuros313091-
dc.identifier.volume101-
dc.identifier.issue5-
dc.identifier.spagearticle no. 052007-
dc.identifier.epagearticle no. 052007-
dc.identifier.isiWOS:000519886300002-
dc.publisher.placeUnited States-
dc.identifier.issnl2470-0010-

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