Measurement of Cross Sections for $b$ Jet Production in Events with a $Z$ Boson in $p^-$ anti-p Collisions at $\sqrt{s}$ = 1.96-TeV - INSPIRE

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Measurement of Cross Sections for $b$ Jet Production in Events with a $Z$ Boson in $p^-$ anti-p Collisions at $\sqrt{s}$ = 1.96-TeV

CDF

Collaboration

Dec, 2008

31 pages

Published in:

Phys.Rev.D 79 (2009) 052008

e-Print:

0812.4458 [hep-ex]

DOI:

10.1103/PhysRevD.79.052008

Report number:

FERMILAB-PUB-08-576-E

Experiments:

FNAL-E-0830

View in:

reference search93 citations

Citations per year

Abstract: (arXiv)

A measurement of the \bjet production cross section is presented for events containing a

Z

boson produced in

p\bar{p}

collisions at

\sqrt{s}=1.96

TeV, using data corresponding to an integrated luminosity of 2 fb

^{-1}

collected by the CDF II detector at the Tevatron.

Z

bosons are selected in the electron and muon decay modes. Jets are considered with transverse energy

E_T>20

GeV and pseudorapidity

|\eta|<1.5

and are identified as \bjets using a secondary vertex algorithm. The ratio of the integrated Z+\bjet cross section to the inclusive

Z

production cross section is measured to be

3.32 \pm 0.53 {\rm (stat.)} \pm 0.42 {\rm (syst.)}\times 10^{-3}

. This ratio is also measured differentially in jet

E_T

, jet

\eta

,

Z

-boson transverse momentum, number of jets, and number of \bjets. The predictions from leading order Monte Carlo generators and next-to-leading-order QCD calculations are found to be consistent with the measurements within experimental and theoretical uncertainties.

Note:

submitted to Phys. Rev. D

14.70.Hp
14.65.Fy
jet: bottom
jet: associated production
anti-p p: interaction
Z0: hadroproduction
Batavia TEVATRON Coll
CDF
Z0: leptonic decay
cross section: ratio

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