Measurement of jet substructure observables in <i>t</i>(<i>t</i>)over-bar events from proton-proton collisions at √<i>s</i>=13 TeV



Sirunyan, AM, Tumasyan, A, Adam, W, Ambrogi, F, Asilar, E, Bergauer, T, Brandstetter, J, Brondolin, E, Dragicevic, M, Eroe, J
et al (show 2292 more authors) (2018) Measurement of jet substructure observables in <i>t</i>(<i>t</i>)over-bar events from proton-proton collisions at √<i>s</i>=13 TeV. PHYSICAL REVIEW D, 98 (9). 092014-.

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Abstract

A measurement of jet substructure observables is presented using tt events in the lepton+jets channel from proton-proton collisions at s=13 TeV recorded by the CMS experiment at the LHC, corresponding to an integrated luminosity of 35.9 fb-1. Multiple jet substructure observables are measured for jets identified as bottom, light-quark, and gluon jets, as well as for inclusive jets (no flavor information). The results are unfolded to the particle level and compared to next-to-leading-order predictions from powheg interfaced with the parton shower generators pythia 8 and herwig 7, as well as from sherpa 2 and Dire 2. A value of the strong coupling at the Z boson mass, αS(mZ)=0.115-0.013+0.015, is extracted from the substructure data at leading-order plus leading-log accuracy.

Item Type: Article
Depositing User: Symplectic Admin
Date Deposited: 15 Feb 2019 16:16
Last Modified: 17 Mar 2024 02:03
DOI: 10.1103/PhysRevD.98.092014
Open Access URL: https://doi.org/10.1103/PhysRevD.98.092014
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3032936