Measurement of the differential t(t)over-bar production cross section as a function of the jet mass and extraction of the top quark mass in hadronic decays of boosted top quarks
File(s)
Published version
Author(s)
Type
Journal Article
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.
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.
Date Issued
2023-07
Date Acceptance
2023-05-04
Citation
European Physical Journal C, 2023, 83 (7)
ISSN
1434-6044
Publisher
Springer
Journal / Book Title
European Physical Journal C
Volume
83
Issue
7
Copyright Statement
© CERN for the benefit of the CMS collaboration 2023. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
License URL
Identifier
https://link.springer.com/article/10.1140/epjc/s10052-023-11587-8
Subjects
PAIR
Physical Sciences
Physics
Physics, Particles & Fields
PLUS PLUS
Science & Technology
Publication Status
Published
Article Number
560
Date Publish Online
2023-07-03