Top quark mass measurement using the template method at CDF

Aaltonen, T.; Alvarez Gonzalez, B.; Amerio, S.; Amidei, D.; Anastassov, A.; Annovi, A.; Antos, J.; Apollinari, G.; Appel, J.A.; Apresyan, A.

doi:10.1103/PhysRevD.83.111101

Top quark mass measurement using the template method at CDF

CDF

Collaboration

May, 2011

9 pages

Published in:

Phys.Rev.D 83 (2011) 111101

e-Print:

1105.0192 [hep-ex]

DOI:

10.1103/PhysRevD.83.111101

PDG:

{{\mathit t}}

-Quark Mass (Direct Measurements)

Report number:

FERMILAB-PUB-11-205-E-PPD

Experiments:

FNAL-E-0830

View in:

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Abstract: (arXiv)

We present a measurement of the top quark mass in the lepton+jets and dilepton channels of

t\bar{t}

decays using the template method. The data sample corresponds to an integrated luminosity of 5.6 fb

^{-1}

of

p\bar{p}

collisions at Tevatron with

\sqrt{s}=1.96

TeV, collected with the CDF II detector. The measurement is performed by constructing templates of three kinematic variables in the lepton+jets and two kinematic variables in the dilepton channel. The variables are two reconstructed top quark masses from different jets-to-quarks combinations and the invariant mass of two jets from the

W

decay in the lepton+jets channel, and a reconstructed top quark mass and

m_{T2}

, a variable related to the transverse mass in events with two missing particles, in the dilepton channel. The simultaneous fit of the templates from signal and background events in the lepton+jets and dilepton channels to the data yields a measured top quark mass of

M_{top} = 172.1 \pm 1.1(stat) \pm 0.9(syst).

Note:

submitted to Phys. Rev. D

13.85.Ni
12.15.Ff
14.65.Ha
13.85.Qk
top: mass: measured
jet: pair production
mass: transverse
dilepton: final state
CDF
background

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