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.

Sirunyan, A., Tumasyan, A., Adam, W., Ambrogi, F., Asilar, E., Bergauer, T., et al. (2018). Measurement of jet substructure observables in t t events from proton-proton collisions at s =13 TeV. PHYSICAL REVIEW D, 98(9) [10.1103/PhysRevD.98.092014].

Measurement of jet substructure observables in t t events from proton-proton collisions at s =13 TeV

Benaglia A.;Beschi A.;Brianza L.;Brivio F.;Ciriolo V.;Dinardo M. E.;Fiorendi S.;Ghezzi A.;Govoni P.;Malberti M.;Massironi A.;Moroni L.;Paganoni M.;Ragazzi S.;Tabarelli De Fatis T.;Gerosa R.;Lucchini M. T.;De Guio F.;
2018

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.
Articolo in rivista - Articolo scientifico
jet substructure observables; proton-proton collisions;
English
2018
98
9
092014
none
Sirunyan, A., Tumasyan, A., Adam, W., Ambrogi, F., Asilar, E., Bergauer, T., et al. (2018). Measurement of jet substructure observables in t t events from proton-proton collisions at s =13 TeV. PHYSICAL REVIEW D, 98(9) [10.1103/PhysRevD.98.092014].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/319220
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