Author
Sirunyan, A. M., Işıldak, Bora
Publication Date
2017
Publication Place
-
Springer International Publishing
Subject
CMS, Physics, Top quark cross section, Top quark mass
Type
Periodical
Language
English
Digital
Yes
Manuscript
No
Library
Özyeğin University
Library Asset ID
1434-6044
Record ID
e1892665-2154-49a8-9dae-f1215bf295d7
Library Location
Natural and Mathematical Sciences
Date
2017
Notes
Due to copyright restrictions, the access to the full text of this article is only available via subscription.
Sample Text
The first measurement of the jet mass mjetmjet of top quark jets produced in tt¯tt¯ events from pp collisions at s√=8s=8 TeVTeV is reported for the jet with the largest transverse momentum pTpT in highly boosted hadronic top quark decays. The data sample, collected with the CMS detector, corresponds to an integrated luminosity of 19.7 fb−1fb−1. The measurement is performed in the lepton+jets channel in which the products of the semileptonic decay t→bWt→bW with W→ℓνW→ℓν where ℓℓ is an electron or muon, are used to select tt¯tt¯ events with large Lorentz boosts. The products of the fully hadronic decay t→bWt→bW with W→qq¯¯¯′W→qq¯′ are reconstructed using a single Cambridge–Aachen jet with distance parameter R=1.2R=1.2, and pT>400pT>400 GeVGeV. The tt¯tt¯ cross section as a function of mjetmjet is unfolded at the particle level and is used to test the modelling of highly boosted top quark production. The peak position of the mjetmjet distribution is sensitive to the top quark mass mtmt, and the data are used to extract a value of mtmt to assess this sensitivity.
DOI
10.1140/epjc/s10052-017-5030-3
Cilt
77
