Measurement of the Top-Quark Mass in All-Hadronic Decays in pp Collisions at CDF II

Journal Article · Fri Apr 06 04:00:00 EDT 2007 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.98.142001· OSTI ID:20951204

Aaltonen, T; Maki, T; Mehtala, P; Orava, R; Osterberg, K; Saarikko, H; Remortel, N van ^[1]; Abulencia, A; Budd, S; Ciobanu, C I; Errede, D; Errede, S; Gerberich, H; Grundler, U; Junk, T R; Kraus, J; Marino, C P; Pitts, K; Rogers, E; Taffard, A ^[2]

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1. Division of High Energy Physics, Department of Physics, University of Helsinki and Helsinki Institute of Physics, FIN-00014, Helsinki (Finland)
2. University of Illinois, Urbana, Illinois 61801 (United States)

We present a measurement of the top-quark mass M{sub top} in the all-hadronic decay channel tt{yields}W{sup +}bW{sup -}b{yields}q{sub 1}q{sub 2}bq{sub 3}q{sub 4}b. The analysis is performed using 310 pb{sup -1} of {radical}(s)=1.96 TeV pp collisions collected with the CDF II detector using a multijet trigger. The mass measurement is based on an event-by-event likelihood which depends on both the sample purity and the value of the top-quark mass, using 90 possible jet-to-parton assignments in the six-jet final state. The joint likelihood of 290 selected events yields a value of M{sub top}=177.1{+-}4.9(stat){+-}4.7(syst) GeV/c{sup 2}.

• OSTI ID: 20951204
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 14 Vol. 98; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
FERMILAB COLLIDER DETECTOR
GEV RANGE 100-1000
HADRONIC PARTICLE DECAY
MASS
PROTON-PROTON INTERACTIONS
T QUARKS
TEV RANGE 01-10
W MINUS BOSONS
W PLUS BOSONS