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Measurement of jet substructure observables in t t events from proton-proton collisions at s =13 TeV MEASUREMENT of JET SUBSTRUCTURE OBSERVABLES .A. M. SIRUNYAN et al.

By Diego Beghin, Bugra Bilin, Hugues Brun, Barbara Clerbaux, Gilles De Lentdecker, Hugo Delannoy, Brian Dorney, Giuseppe Fasanella, Laurent Favart, Reza Goldouzian, Anastasia Grebenyuk, Amandeep Kaur Kalsi, Thomas Lenzi, Jelena Luetic, Nicolas Postiau, Elizabeth Rose Starling, Laurent Thomas, Catherine Vander Velde, Pascal Vanlaer, David Vannerom and Qun Wang

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.0info:eu-repo/semantics/publishe

Topics: Physique des particules élémentaires
Publisher: 'American Physical Society (APS)'
Year: 2018
DOI identifier: 10.1103/PhysRevD.98.092014
OAI identifier: oai:dipot.ulb.ac.be:2013/299427
Provided by: DI-fusion
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