A model-independent simultaneous mass measurement in t=t dilepton events using subsystem MT2

Physics

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Scientific paper

We present a simultaneous measurement of the top quark, W boson, and neutrino masses in dileptonic t=t decays in 7 TeV pp collisions using the CMS detector at the LHC. We use the subsystem MT2 technique. This technique was originally developed to measure particle masses in new physics events containing two weakly-interacting massive particles. As this measurement provides a demonstration of a method that is intended to characterize new physics, the analysis has very minimal dependence on simulation or a particular physics model.

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