Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/10665
Title: Measurement of masses in the t(t)over-tilde system by kinematic endpoints in pp collisions at ?s=7 TeV
Authors: Karapınar, Güler
CMS Collaboration
Issue Date: 2013
Publisher: Springer Verlag
Abstract: A simultaneous measurement of the top-quark, W-boson, and neutrino masses is reported for t (t) over bar events selected in the dilepton final state from a data sample corresponding to an integrated luminosity of 5.0 fb(-1) collected by the CMS experiment in pp collisions at root 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-t = 173.9 +/- 0.9 (stat.)=(+ 1.7)(-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.
URI: https://doi.org/10.1140/epjc/s10052-013-2494-7
https://hdl.handle.net/11147/10665
ISSN: 1434-6044
1434-6052
Appears in Collections:Rectorate / Rektörlük
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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