2006/12/24 by A. Abulencia et al., A. Abulencia, J. Adelman +98 · 17 citations
Physics and Astronomy · #Algorithm #Collider Detector at Fermilab #Computer science #Energy (signal processing) #Hadron #Jet (fluid) #Large Hadron Collider #Lepton #Nuclear physics #Particle Detector Development and Performance #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quark #Top quark #hep-ex
paper · pdf · open access · doi:10.1103/physrevd.75.071102
published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 75(7) (American Physical Society) · 23 pages, 4 figures, submitted to Phys. Rev. D (Rapid Communication)
arxiv created 2006/12/24 · openalex publication_date 2007/04/10 · arxiv updated 2010/05/12 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We report the first measurement of the top quark mass using the decay length technique in pp collisions at a center-of-mass energy of 1.96 TeV. This technique uses the measured flight distance of the b hadron to infer the mass of the top quark in lepton plus jets events with missing transverse energy. It relies solely on tracking and avoids the jet energy scale uncertainty that is common to all other methods used so far. We apply our novel method to a 695 pb^\ensuremath-1 data sample recorded by the CDF II detector at Fermilab and extract a measurement of mt=180.7_\ensuremath-13.4+15.5(stat.)\ifmmode±\else\textpm\fi8.6(syst.) GeV/c2. While the uncertainty of this result is larger than that of other measurements, the dominant uncertainties in the decay length technique are uncorrelated with those in other methods. This result can help reduce the overall uncertainty when combined with other existing measurements of the top quark mass.