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Measurement of the jet mass distribution and top quark mass in hadronic decays of boosted top quarks in pp collisions at √s = 13 TeV
dc.contributor.author | Sirunyan, A. M. | pt_BR |
dc.contributor.author | Silveira, Gustavo Gil da | pt_BR |
dc.contributor.author | CMS Collaboration | pt_BR |
dc.date.accessioned | 2020-08-04T03:39:14Z | pt_BR |
dc.date.issued | 2020 | pt_BR |
dc.identifier.issn | 0031-9007 | pt_BR |
dc.identifier.uri | http://hdl.handle.net/10183/212598 | pt_BR |
dc.description.abstract | A measurement is reported of the jet mass distribution in hadronic decays of boosted top quarks produced in p p collisions at √ s = 13 TeV . The data were collected with the CMS detector at the LHC and correspond to an integrated luminosity of 35.9 fb − 1 . The measurement is performed in the lepton + jets channel of t ¯ t events, where the lepton is an electron or muon. The products of the hadronic top quark decay t → b W → b q ¯ q ′ are reconstructed as a single jet with transverse momentum larger than 400 GeV. The t ¯ t cross section as a function of the jet mass is unfolded at the particle level and used to extract a value of the top quark mass of 172.6 ± 2.5 GeV . A novel jet reconstruction technique is used for the first time at the LHC, which improves the precision by a factor of 3 relative to an earlier measurement. This highlights the potential of measurements using boosted top quarks, where the new technique will enable future precision measurements. | en |
dc.format.mimetype | application/pdf | pt_BR |
dc.language.iso | eng | pt_BR |
dc.relation.ispartof | Physical review letters. Melville. Vol. 124, no. 20 (May 2020), 202001, 19 p. | pt_BR |
dc.rights | Open Access | en |
dc.subject | Aceleradores de partículas | pt_BR |
dc.subject | Colisões proton-proton | pt_BR |
dc.subject | Hadrons | pt_BR |
dc.title | Measurement of the jet mass distribution and top quark mass in hadronic decays of boosted top quarks in pp collisions at √s = 13 TeV | pt_BR |
dc.type | Artigo de periódico | pt_BR |
dc.identifier.nrb | 001115128 | pt_BR |
dc.type.origin | Estrangeiro | pt_BR |
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