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|Title:||Measurement of the soft-drop jet mass in pp collisions at √ s=13 TeV with the ATLAS detector|
|Citation:||Physical Review Letters, 2018; 121(9):092001-1-092001-21|
|Publisher:||American Physical Society|
|M. Aaboud … Damir Duvnjak … Paul D. Jackson … Andreas Petridis … Abhishek Sharma … Martin White … et al. (The ATLAS Collaboration)|
|Abstract:||Jet substructure observables have significantly extended the search program for physics beyond the standard model at the Large Hadron Collider. The state-of-the-art tools have been motivated by theoretical calculations, but there has never been a direct comparison between data and calculations of jet substructure observables that are accurate beyond leading-logarithm approximation. Such observables are significant not only for probing the collinear regime of QCD that is largely unexplored at a hadron collider, but also for improving the understanding of jet substructure properties that are used in many studies at the Large Hadron Collider. This Letter documents a measurement of the first jet substructure quantity at a hadron collider to be calculated at next-to-next-to-leading-logarithm accuracy. The normalized, differential cross section is measured as a function of log 10 ρ 2 , where ρ is the ratio of the soft-drop mass to the ungroomed jet transverse momentum. This quantity is measured in dijet events from 32.9 fb − 1 of √ s = 13 TeV proton-proton collisions recorded by the ATLAS detector. The data are unfolded to correct for detector effects and compared to precise QCD calculations and leading-logarithm particle-level Monte Carlo simulations.|
|Rights:||© 2018 CERN, for the ATLAS Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP|
|Appears in Collections:||Physics publications|
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