Measurement of the top-quark mass in all-hadronic decays in p anti-p collisions at CDF II

Journal Article · Fri Dec 01 04:00:00 EST 2006 · Phys.Rev.Lett.98:142001,2007

OSTI ID:897584

Aaltonen, T; Abulencia, A; Adelman, J; Affolder, T; Akimoto, T; Albrow, M G; Ambrose, D; Amerio, S; Amidei, D; Anastassov, A; Anikeev, K

We present a measurement of the top-quark mass, M{sub tpo}, in the all-hadronic decay channel t{bar t} {yields} W{sup +}bW{sup -}{bar b} {yields} q{sub 1}{bar q}{sub 2}bq{sub 3}{bar q}{sub 4}{bar b}. The analysis is performed using 310 pb{sup -1} of {radical}s = 1.96 TeV p{bar p} collisions collected with the CDF II detector using a multi-jet 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}.

• Research Organization: Fermi National Accelerator Laboratory (FNAL), Batavia, IL
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 897584
• Report Number(s): FERMILAB-PUB-06-468-E; arXiv eprint number hep-ex/0612026
• Journal Information: Phys.Rev.Lett.98:142001,2007, Journal Name: Phys.Rev.Lett.98:142001,2007
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
DECAY
Experiment-HEP
FERMILAB COLLIDER DETECTOR
HADRONIC PARTICLE DECAY