Measurement of the jet mass in highly boosted t[bar over t] events from pp collisions at √s=8 TeV
Author(s)
Abercrombie, Daniel Robert; Allen, Brandon Leigh; Apyan, Aram; Azzolini, Virginia; Barbieri, Richard Alexander; Baty, Austin Alan; Bi, Ran; Bierwagen, Katharina; Brandt, Stephanie Akemi; Busza, Wit; Cali, Ivan Amos; D'Alfonso, Mariarosaria; Demiragli, Zeynep; Gomez-Ceballos, Guillelmo; Goncharov, Maxim; Hsu, Dylan George; Iiyama, Yutaro; Innocenti, Gian Michele; Klute, Markus; Kovalskyi, Dmytro; Krajczar, Krisztian F.; Lai, Yue Shi; Lee, Yen-Jie; Levin, Andrew Michael; Luckey Jr, P David; Maier, Benedikt; Marini, Andrea Carlo; McGinn, Christopher Francis; Mironov, Camelia Maria; Narayanan, Siddharth Madhavan; Niu, Xinmei; Paus, Christoph M. E.; Roland, Christof E; Roland, Gunther M; Salfeld-Nebgen, Jakob Maxillian Henry; Stephans, George S. F.; Tatar, Kaya; Velicanu, Dragos Alexandru; Wang, J.; Wang, Ta-Wei; Wyslouch, Boleslaw; ... Show more Show less
Downloads10052-017-5030-3_pdfa.pdf (1.228Mb)
PUBLISHER_CC
Publisher with Creative Commons License
Creative Commons Attribution
Terms of use
Metadata
Show full item recordAbstract
The first measurement of the jet mass m[subscript jet] of top quark jets produced in t[bar over t] events from pp collisions at √s=8 TeV is reported for the jet with the largest transverse momentum p[subscript T] in highly boosted hadronic top quark decays. The data sample, collected with the CMS detector, corresponds to an integrated luminosity of 19.7 fb[superscript -1]. The measurement is performed in the lepton+jets channel in which the products of the semileptonic decay t→bW with W→ℓν where ℓ is an electron or muon, are used to select t[bar over t] events with large Lorentz boosts. The products of the fully hadronic decay t→bW with W→q[bar over q]′ are reconstructed using a single Cambridge–Aachen jet with distance parameter R=1.2 , and p[subscript T]>400 GeV . The t[bar over t] cross section as a function of mjet is unfolded at the particle level and is used to test the modelling of highly boosted top quark production. The peak position of the m[subscript jet] distribution is sensitive to the top quark mass m[subscript t], and the data are used to extract a value of mt to assess this sensitivity. Keywords: CMS, Physics, Top quark cross section, Top quark mass
Date issued
2017-07Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear ScienceJournal
The European Physical Journal C
Publisher
Springer/Società Italiana di Fisica
Citation
CMS Collaboration, et al. “Measurement of the Jet Mass in Highly Boosted t[bar over t] Events from Pp Collisions at √s=8 TeV.” The European Physical Journal C, vol. 77, no. 7, July 2017. © 2017 CERN for the benefit of the CMS collaboration
Version: Final published version
ISSN
1434-6044
1434-6052