Search for right-handed $W$ bosons in top quark decay - INSPIRE

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Search for right-handed $W$ bosons in top quark decay

D0

Collaboration

May, 2005

7 pages

Published in:

Phys.Rev.D 72 (2005) 011104

e-Print:

hep-ex/0505031 [hep-ex]

DOI:

10.1103/PhysRevD.72.011104

PDG:

{{\mathit F}_{{{+}}}}

Report number:

FERMILAB-PUB-05-187-E

Experiments:

FNAL-E-0823

View in:

reference search42 citations

Citations per year

Abstract:

We present a measurement of the fraction f+ of right-handed W bosons produced in top quark decays, based on a candidate sample of

t\bar{t}

events in the lepton+jets decay mode. These data correspond to an integrated luminosity of 230pb^-1, collected by the DO detector at the Fermilab Tevatron

p\bar{p}

Collider at sqrt(s)=1.96 TeV. We use a constrained fit to reconstruct the kinematics of the

t\bar{t}

and decay products, which allows for the measurement of the leptonic decay angle

\theta^*

for each event. By comparing the

\cos\theta^*

distribution from the data with those for the expected background and signal for various values of f+, we find f+=0.00+-0.13(stat)+-0.07(syst). This measurement is consistent with the standard model prediction of f+=3.6x10^-4.

Note:

Submitted to Physical Review D Rapid Communications 7 pages, 3 figures

14.70.Fm
12.38.Qk
12.15.Ji
13.88.+e
14.65.Ha
13.38.Be
D0
anti-p p: colliding beams
anti-p p: inclusive reaction
top: pair production

References(21)

Figures(5)

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