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

G., Aad ; Åkesson, T. LU orcid ; Bocchetta, S. LU ; Bryngemark, L. LU ; Corrigan, E. LU ; Doglioni, C. LU ; Gregersen, K. LU ; Hansen, E. LU ; Hedberg, V. LU and Jarlskog, G. LU , et al. (2020) In Physical Review D 101(5).
Abstract
Jet 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... (More)
Jet 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. © 2020 CERN. (Less)
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review D
volume
101
issue
5
article number
052007
publisher
American Physical Society
external identifiers
  • scopus:85083566475
ISSN
2470-0010
DOI
10.1103/PhysRevD.101.052007
language
English
LU publication?
yes
id
b6d48b39-f69a-450f-9567-53978d0eb967
date added to LUP
2022-04-05 14:56:16
date last changed
2023-04-02 22:38:51
@article{b6d48b39-f69a-450f-9567-53978d0eb967,
  abstract     = {{Jet 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. © 2020 CERN.}},
  author       = {{G., Aad and Åkesson, T. and Bocchetta, S. and Bryngemark, L. and Corrigan, E. and Doglioni, C. and Gregersen, K. and Hansen, E. and Hedberg, V. and Jarlskog, G. and Kalderon, C. and Kellermann, E. and Konya, B. and Lytken, E. and Mankinen, K. and Marcon, C. and Mjörnmark, J. and Mullier, G. and Poettgen, R. and Poulsen, T. and Skorda, E. and Smirnova, O. and L., Zwalinski}},
  issn         = {{2470-0010}},
  language     = {{eng}},
  number       = {{5}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review D}},
  title        = {{Measurement of soft-drop jet observables in pp collisions with the ATLAS detector at s =13 TeV}},
  url          = {{http://dx.doi.org/10.1103/PhysRevD.101.052007}},
  doi          = {{10.1103/PhysRevD.101.052007}},
  volume       = {{101}},
  year         = {{2020}},
}