Measurement of the differential tt production cross section as a function of the jet mass and extraction of the top quark mass in hadronic decays of boosted top quarks
dc.contributor.author | Tumasyan, Armen | pt_BR |
dc.contributor.author | Silveira, Gustavo Gil da | pt_BR |
dc.contributor.author | Bernardes, César Augusto | pt_BR |
dc.contributor.author | CMS Collaboration | pt_BR |
dc.date.accessioned | 2024-01-10T03:37:12Z | pt_BR |
dc.date.issued | 2023 | pt_BR |
dc.identifier.issn | 1434-6044 | pt_BR |
dc.identifier.uri | http://hdl.handle.net/10183/270809 | pt_BR |
dc.description.abstract | A measurement of the jet mass distribution in hadronic decays of Lorentz-boosted top quarks is presented. The measurement is performed in the lepton + jets channel of top quark pair production (tt) events, where the lepton is an electron or muon. The products of the hadronic top quark decay are reconstructed using a single large-radius jet with transverse momentum greater than 400 GeV. The data were collected with the CMS detector at the LHC in proton- proton collisions and correspond to an integrated luminosity of 138 fb−1 . The differential tt production cross section as a function of the jet mass is unfolded to the particle level and is used to extract the top quark mass. The jet mass scale is calibrated using the hadronic W boson decay within the large-radius jet. The uncertainties in the modelling of the final state radiation are reduced by studying angular corre- lations in the jet substructure. These developments lead to a significant increase in precision, and a top quark mass of 173.06 ± 0.84 GeV. | en |
dc.format.mimetype | application/pdf | pt_BR |
dc.language.iso | eng | pt_BR |
dc.relation.ispartof | The European physical journal. C, Particles and fields. Berlin. Vol. 83, no. 7 (July 2023), 560, 37 p. | pt_BR |
dc.rights | Open Access | en |
dc.subject | Aceleradores de partículas | pt_BR |
dc.subject | Colisões proton-proton | pt_BR |
dc.subject | Bosons W | pt_BR |
dc.title | Measurement of the differential tt production cross section as a function of the jet mass and extraction of the top quark mass in hadronic decays of boosted top quarks | pt_BR |
dc.type | Artigo de periódico | pt_BR |
dc.identifier.nrb | 001189315 | pt_BR |
dc.type.origin | Estrangeiro | pt_BR |
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