Measurement of the Top Mass in the Dilepton Channel in Run 2 of the DØExperiment

Astronomy and Astrophysics – Astrophysics

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Scientific paper

In this talk we will present a study of the improvement in measurement of the top quark mass using a subset of top quark events with dileptons in the final state topology. The rate for these events is rather small, but this final state signature has the least background and is hence the cleanest. We will use dynamical likelihood methods to reconstruct the top quark mass using dilepton events. The study will focus on the determination of the expected precision on the top quark mass measurement using the data sample which will be collected by the DØexperiment at the Fermilab Tevatron in the next few years. The improvement in the determination of the top mass measurement provided by these events will add significantly to the overall precision of the top mass determination using all the final state topologies. Within the framework of the Standard Model, the top quark mass and the W boson mass measurements help constrain the mass of the elusive Higgs Boson.

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