Precision measurement of the top quark mass in events with two leptons at D0

Details Precision measurement of the top quark mass in events with two leptons at D0 Precision measurement of the top quark mass in events with two leptons at D0

Mar 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aps..apr.j9003l&link_type=abstract

American Physical Society, APS April Meeting 2012, March 31-Apr 3, 2012, abstract #J9.003

Physics

Scientific paper

We present a measurement of the top quark mass in pp collisions at √s = 1.96 TeV using tt events with two leptons (ee, eμ or μμ) in the final state. This analysis utilizes an integrated luminosity of 4.3 fb-1 collected with the D0 detector at the Fermilab Tevatron collider. We employ a neutrino weighting technique to extract the top mass from 319 dilepton events. To reduce the dominant systematic uncertainties from jet energy calibration, we apply the jet energy corrections determined from a dijet invariant mass using W->jj decays in tt->l+jets events. We also apply corrections to jets in Monte Carlo events to replicate the flavor dependence of the jet response in data.

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