Cross Section Measurements of High-p(T) Dilepton Final-State Processes Using a Global Fitting Method - INSPIRE

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Cross Section Measurements of High-p(T) Dilepton Final-State Processes Using a Global Fitting Method

CDF

Collaboration

Dec, 2006

20 pages

Published in:

Phys.Rev.D 78 (2008) 012003

e-Print:

hep-ex/0612058 [hep-ex]

DOI:

10.1103/PhysRevD.78.012003

PDG:

{{\mathit t}}{{\overline{\mathit t}}}

Production Cross Section in

{{\mathit p}}{{\overline{\mathit p}}}

\sqrt {s }

Report number:

FERMILAB-PUB-06-486-E

Experiments:

FNAL-E-0830

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Abstract:

We present a new method for studying high-

p_T

dilepton events (

e^{\pm}e^{\mp}

,

\mu^{\pm}\mu^{\mp}

,

e^{\pm}\mu^{\mp}

) and simultaneously extracting the production cross sections of

p\bar{p} \to t\bar{t}

,

p\bar{p} \to W^+W^-

, and p\bar{p} \to \ztt at a center-of-mass energy of

\sqrt{s} = 1.96

TeV. We perform a likelihood fit to the dilepton data in a parameter space defined by the missing transverse energy and the number of jets in the event. Our results, which use

360 {\rm pb^{-1}}

of data recorded with the CDF II detector at the Fermilab Tevatron Collider, are

\sigma(t\bar{t}) = 8.5_{-2.2}^{+2.7}

pb,

\sigma(W^+W^-) = 16.3^{+5.2}_{-4.4}

pb, and \sigma(\ztt) =291^{+50}_{-46} pb.

Note:

20 pages, 2 figures, to be submitted to PRD-RC

13.85.Ni
14.70.-e
13.85.Qk
CDF
anti-p p: colliding beams
anti-p p: inclusive reaction
final state: dilepton
transverse momentum: high
top: pair production
top: decay

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