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Precise measurement of the top quark mass in dilepton decays using optimized neutrino weighting
Joint Nucl Res Inst, Dubna, Russia..
Michigan State Univ, E Lansing, MI 48824 USA..
Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India..
Univ Illinois, Chicago, IL 60607 USA..
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2016 (English)In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 752, 18-26 p.Article in journal (Refereed) PublishedText
Abstract [en]

We measure the top quark mass in dilepton final states of t (t) over bar events in p (p) over bar collisions at root s = 1.96 TeV, using data corresponding to an integrated luminosity of 9.7 fb(-1) at the Fermilab Tevatron Collider. The analysis features a comprehensive optimization of the neutrino weighting method to minimize the statistical uncertainties. We also improve the calibration of jet energies using the calibration determined in t (t) over bar -> lepton + jets events, which reduces the otherwise limiting systematic uncertainty from the jet energy scale. The measured top quark mass is m(t) = 173.32 +/- 1.36(stat) +/- 0.85(syst) GeV.

Place, publisher, year, edition, pages
2016. Vol. 752, 18-26 p.
National Category
Accelerator Physics and Instrumentation Subatomic Physics
URN: urn:nbn:se:uu:diva-276817DOI: 10.1016/j.physletb.2015.10.086ISI: 000368026000004OAI: diva2:903502
Available from: 2016-02-16 Created: 2016-02-16 Last updated: 2016-02-16Bibliographically approved

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Physics Letters B
Accelerator Physics and InstrumentationSubatomic Physics

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