Measurement of masses in the t[bar over t] system by kinematic endpoints in pp collisions at s√=7 TeV
Name
Measurement of masses.pdf
Size
1.28 MB
Format
Adobe PDF
Checksum (MD5)
e780d052eb4715ce64c5a3c27ca3334f
Author(s)
Apyan, Aram
Bauer, Gerry P
Busza, Wit
Cali, Ivan Amos
Dutta, Valentina
Gomez-Ceballos, Guillelmo
Goncharov, Maxim
Klute, Markus
Lai, Yue Shi
Levin, Andrew Michael
Alternative Title
Measurement of masses in the tt¯ system by kinematic endpoints in pp collisions at s√=7 TeV
Date Issued
July 2013
Journal
The European Physical Journal C
Publisher
Springer-Verlag
Citation
The CMS Collaboration et al. “Measurement of Masses in the t[bar over t] System by Kinematic Endpoints in Pp Collisions at √s = 7 TeV.” The European Physical Journal C 73.7 (2013): n. pag. © 2013 CERN for the benefit of the CMS collaboration
Version
Final published version
Abstract
A simultaneous measurement of the top-quark, W-boson, and neutrino masses is reported for tt events selected in the dilepton final state from a data sample corresponding to an integrated luminosity of 5.0 fb[superscript −1] collected by the CMS experiment in pp collisions at √s = 7 TeV.
The analysis is based on endpoint determinations in kinematic distributions. When the neutrino and W-boson masses are constrained to their world-average values, a top-quark mass value of M[subscript t] = 173.9 ± 0.9 (stat.)[superscript +1.7] [subscript −2.1] (syst.) GeV is obtained. When such constraints are not used, the three particle masses are obtained in a simultaneous fit. In this unconstrained mode the study serves as a test of mass determination methods that may be used in beyond standard model physics scenarios where several masses in a decay chain may be unknown and undetected particles lead to underconstrained kinematics.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution 4.0 International License
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1140/epjc/s10052-013-2494-7
