/ Experiment-HEP arXiv:1201.5172

Measurement of the top quark mass in $p \bar{p}$ collisions using events with two leptons

Pages: 5

Abstract: We present a measurement of the top quark mass ($m_t$) in $p\bar{p}$ collisions at $\sqrt{s} = 1.96$ TeV using $t\bar{t}$ events with two leptons ($ee$, $e\mu$ or $\mu\mu$) in the final state in 4.3 fb$^{-1}$ of data collected with the D0 detector at the Fermilab Tevatron collider. We analyze the kinematically underconstrained dilepton events by integrating over the neutrino rapidity distributions. We reduce the dominant systematic uncertainties from jet energy calibration using a correction obtained from $t\bar{t}\rightarrow\ell+$jets events. We also correct jets in simulated events to replicate the quark flavor dependence of the jet response in data. In combination with our previous analysis, we measure $m_t = 174.0\pm2.4(\rm stat)\pm1.4(\rm syst)$ GeV.

Note: 5 pages, 1 figure, submitted to Phys. Rev. Letters

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