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

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

CDF

Collaboration

Dec, 2006

7 pages

Published in:

Phys.Rev.Lett. 98 (2007) 142001

e-Print:

hep-ex/0612026 [hep-ex]

DOI:

10.1103/PhysRevLett.98.142001

PDG:

{{\mathit t}}

-Quark Mass (Direct Measurements)

Report number:

FERMILAB-PUB-06-468-E

Experiments:

FNAL-E-0830

View in:

reference search37 citations

Citations per year

Abstract:

We present a measurement of the top-quark mass,

M_{\mathrm{top}}

, in the all-hadronic decay channel

t\bar{t} \to W^+b W^- \bar{b} \to q_1\bar{q}_2 b q_3 \bar{q}_4 \bar{b}

. The analysis is performed using 310 pb

^{-1}

of

\sqrt{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_{\mathrm{top}}

=177.1

\pm

4.9 (stat.)

\pm

4.7 (syst.) GeV/

c^2

.

Note:

7 pages, 2 figures and 1 table, Submitted to Phys. Rev. Lett

12.15.Ff
14.65.Ha
anti-p p: colliding beams
anti-p p: inclusive reaction
top: pair production
top: decay
final state: (6jet)
mass: top
data analysis method
jet: energy

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