@article{3158107, title = "Measurement of masses in the t(t)over-tilde system by kinematic endpoints in pp collisions at root s=7 TeV", author = "Chatrchyan, S. and Khachatryan, V. and Sirunyan, A. M. and Tumasyan, A. and and Adam, W. and Bergauer, T. and Dragicevic, M. and Eroe, J. and and Fabjan, C. and Friedl, M. and Fruehwirth, R. and Ghete, V. M. and and Hoermann, N. and Hrubec, J. and Jeitler, M. and Kiesenhofer, W. and and Knunz, V. and Krammer, M. and Kraetschmer, I. and Liko, D. and Mikulec, and I. and Rabady, D. and Rahbaran, B. and Rohringer, C. and Rohringer, H. and and Schoefeck, R. and Strauss, J. and Taurok, A. and and Treberer-Treberspurg, W. and Waltenberger, W. and Wulz, C. -E. and and Mossolov, V. and Shumeiko, N. and Gonzalez, J. Suarez and Alderweireldt, and S. and Bansal, M. and Bansal, S. and Cornelis, T. and De Wolf, E. 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H. and Swanson, J. and CMS and Collaboration", journal = "The European Physical Journal C - Particles and Fields", year = "2013", volume = "73", number = "7", publisher = "Springer-Verlag", issn = "1434-6044, 1434-6052", doi = "10.1140/epjc/s10052-013-2494-7", 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." }