Measurement of the top quark mass with dilepton events selected using neuroevolution at CDF

. Events are selected with a neural network which has been directly optimized for statistical precision in top quark mass using neuroevolution, a technique modeled on biological evolution. The top quark mass is extracted from per-event probability densities that are formed by the convolution of leading order matrix elements and detector resolution functions. The joint probability is the product of the probability densities from 344 candidate events in 2.0 fb

^{-1}

of

p\bar{p}

collisions collected with the CDF II detector, yielding a measurement of

M_t= 171.2\pm 2.7(\textrm{stat.})\pm 2.9(\textrm{syst.})\mathrm{GeV}/c^2

.

Note:

Submitted to Phys. Rev. Lett

13.85.Ni
12.15.Ff
14.65.Ha
13.85.Qk
anti-p p: colliding beams
top: pair production
top: mass
top: decay
final state: dilepton
data analysis method

References(23)

Figures(0)

Physics impact of a precise determination of the top quark mass at an $e^{+} e^{-}$ linear collider

- JHEP 09 (2003) 075
•
e-Print:
- hep-ph/0306181
•
DOI:
- 10.1088/1126-6708/2003/09/075

Do about half the top quarks at FNAL come from gluino decays?

Gordon L. Kane
(
- Michigan U.
)
,
S. Mrenna
(
- Argonne
)

- Phys.Rev.Lett. 77 (1996) 3502-3505
•
e-Print:
- hep-ph/9605351
•
DOI:
- 10.1103/PhysRevLett.77.3502

Top quark mass measurement from dilepton events at CDF II

CDF

Collaboration

•

A. Abulencia
(
- Illinois U., Urbana
)

et al.

- Phys.Rev.Lett. 96 (2006) 152002
•
e-Print:
- hep-ex/0512070
•
DOI:
- 10.1103/PhysRevLett.96.152002

Top quark mass measurement from dilepton events at CDF II with the matrix-element method

CDF

Collaboration

•

A. Abulencia
(
- Illinois U., Urbana
)

et al.

- Phys.Rev.D 74 (2006) 032009
•
e-Print:
- hep-ex/0605118
•
DOI:
- 10.1103/PhysRevD.74.032009

Precision measurement of the top quark mass from dilepton events at CDF II

CDF

Collaboration

•

A. Abulencia
(
- Illinois U., Urbana
)

et al.

- Phys.Rev.D 75 (2007) 031105
•
e-Print:
- hep-ex/0612060
•
DOI:
- 10.1103/PhysRevD.75.031105

Measurement of the $t\bar{t}$ production cross section in $p\bar{p}$ collisions at $\sqrt{s} = 1.96$ TeV using dilepton events

CDF

Collaboration

•

D. Acosta
(
- Florida U.
)

et al.

- Phys.Rev.Lett. 93 (2004) 142001
•
e-Print:
- hep-ex/0404036
•
DOI:
- 10.1103/PhysRevLett.93.142001

Measurement of the $J/\psi$ meson and $b-$ hadron production cross sections in $p\bar{p}$ collisions at $\sqrt{s} = 1960$ GeV

CDF

Collaboration

•

D. Acosta
(
- Florida U.
)

et al.

- Phys.Rev.D 71 (2005) 032001
•
e-Print:
- hep-ex/0412071
•
DOI:
- 10.1103/PhysRevD.71.032001

The Topology of three jet events in $\bar{p}p$ collisions at $\sqrt{s} = 1.8$ TeV

CDF

Collaboration

•

F. Abe
(
- KEK, Tsukuba
)

et al.

- Phys.Rev.D 45 (1992) 1448-1458
•
DOI:
- 10.1103/PhysRevD.45.1448

High-energy physics event generation with PYTHIA 6.1

et al.

- Comput.Phys.Commun. 135 (2001) 238-259
•
e-Print:
- hep-ph/0010017
•
DOI:
- 10.1016/S0010-4655(00)00236-8

ALPGEN, a generator for hard multiparton processes in hadronic collisions

Michelangelo L. Mangano
(
- CERN
)
,
Mauro Moretti
(
- Ferrara U. and
- INFN, Ferrara
)
,
Fulvio Piccinini
(
- CERN
)
,
Roberto Pittau
(
- Turin U. and
- INFN, Turin
)
,
Antonio D. Polosa
(
- CERN
)

- JHEP 07 (2003) 001
•
e-Print:
- hep-ph/0206293
•
DOI:
- 10.1088/1126-6708/2003/07/001

CDF Run II silicon tracking projects

CDF

Collaboration

•

A. Sill
(
- Texas Tech.
)

for the collaboration.

- Nucl.Instrum.Meth.A 447 (2000) 1-8
•
DOI:
- 10.1016/S0168-9002(00)00166-2

Measurement of the $t\bar{t}$ production cross section in $p\bar{p}$ collisions at $\sqrt{s} = 1.96$ TeV using lepton + jets events with secondary vertex $b-$ tagging

CDF

Collaboration

•

D. Acosta
(
- Florida U.
)

et al.

- Phys.Rev.D 71 (2005) 052003
•
e-Print:
- hep-ex/0410041
•
DOI:
- 10.1103/PhysRevD.71.052003

Maximizing spin correlations in top quark pair production at the Tevatron

Gregory Mahlon
(
- Michigan U.
)
,
Stephen J. Parke
(
- Fermilab
)

- Phys.Lett.B 411 (1997) 173-179
•
e-Print:
- hep-ph/9706304
•
DOI:
- 10.1016/S0370-2693(97)00987-8

Improved spin basis for angular correlation studies in single top quark production at the Tevatron

Gregory Mahlon
(
- Michigan U.
)
,
Stephen J. Parke
(
- Fermilab
)

- Phys.Rev.D 55 (1997) 7249-7254
•
e-Print:
- hep-ph/9611367
•
DOI:
- 10.1103/PhysRevD.55.7249

Determination of the jet energy scale at the collider detector at Fermilab

CDF

Collaboration

•

A. Bhatti
(
- Rockefeller U.
)

et al.

- Nucl.Instrum.Meth.A 566 (2006) 375-412
•
e-Print:
- hep-ex/0510047
•
DOI:
- 10.1016/j.nima.2006.05.269

HERWIG 6: An Event generator for hadron emission reactions with interfering gluons (including supersymmetric processes)

G. Corcella
(
- Rochester U.
)
,
I.G. Knowles
(
- Edinburgh U.
)
,
G. Marchesini
(
- Milan Bicocca U. and
- INFN, Milan
)
,
S. Moretti
(
- CERN
)
,
K. Odagiri
(
- KEK, Tsukuba
)

et al.

- JHEP 01 (2001) 010
•
e-Print:
- hep-ph/0011363
•
DOI:
- 10.1088/1126-6708/2001/01/010

New generation of parton distributions with uncertainties from global QCD analysis

J. Pumplin
(
- Michigan State U.
)
,
D.R. Stump
(
- Michigan State U.
)
,
J. Huston
(
- Michigan State U.
)
,
H.L. Lai
(
- Michigan State U.
)
,
Pavel M. Nadolsky
(
- Michigan State U.
)

et al.

- JHEP 07 (2002) 012
•
e-Print:
- hep-ph/0201195
•
DOI:
- 10.1088/1126-6708/2002/07/012

The alpha-s dependence of parton distributions

- Phys.Lett.B 356 (1995) 89-94,
- Phys. Lett. B356 (1995) 89-94, and Chilton Rutherford Lab. - RAL-TR-95-013 (95/06,rec.Jul.) 14 p
•
e-Print:
- hep-ph/9506423
•
DOI:
- 10.1016/0370-2693(95)00808-X