Measurement of the top quark mass using the invariant mass of lepton pairs in soft muon b-tagged events
Author(s)Bauer, Gerry P.; Gomez-Ceballos, Guillelmo; Choudalakis, Georgios; Goncharov, Maxim; Hahn, Kristian Allan; Henderson, C.; Knuteson, Bruce O.; Makhoul, K.; Paus, Christoph M. E.; Xie, Si; ... Show more Show less
MetadataShow full item record
We present the first measurement of the mass of the top quark in a sample of tt̅ →ℓν̅ bb̅ qq̅ events (where ℓ=e,μ) selected by identifying jets containing a muon candidate from the semileptonic decay of heavy-flavor hadrons (soft muon b tagging). The pp̅ collision data used correspond to an integrated luminosity of 2 fb-1 and were collected by the CDF II detector at the Fermilab Tevatron Collider. The measurement is based on a novel technique exploiting the invariant mass of a subset of the decay particles, specifically the lepton from the W boson of the t→Wb decay and the muon from a semileptonic b decay. We fit template histograms, derived from simulation of tt̅ events and a modeling of the background, to the mass distribution observed in the data and measure a top quark mass of 180.5±12.0(stat)±3.6(syst) GeV/c2, consistent with the current world average value.
DepartmentMassachusetts Institute of Technology. Laboratory for Nuclear Science
Physical Review D
American Physical Society
CDF Collaboration et al. “Measurement of the top quark mass using the invariant mass of lepton pairs in soft muon b-tagged events.” Physical Review D 80.5 (2009): 051104. c2009 American Physical Society.
Final published version