UNIGE document Scientific Article
previous document  unige:38638  next document
add to browser collection
Title

Measurement of the top quark mass using the invariant mass of lepton pairs in soft muon b-tagged events

CollaborationWith : Clark, Allan Geoffrey / Garcia Navarro, Jose Enrique / Vallecorsa, Sofia / Wu, Xin
Published in Physical Review. D. 2009, vol. 80, no. 05, p. 051104
Abstract We present the first measurement of the mass of the top quark in a sample of tt→ℓνbbqq 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 pp 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 tt 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.
Identifiers
Full text
Structures
Citation
(ISO format)
CDF COLLABORATION. Measurement of the top quark mass using the invariant mass of lepton pairs in soft muon b-tagged events. In: Physical Review. D, 2009, vol. 80, n° 05, p. 051104. https://archive-ouverte.unige.ch/unige:38638

198 hits

64 downloads

Update

Deposited on : 2014-07-14

Export document
Format :
Citation style :