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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 | Name: CDF_2008_S7541902
Year: 2008
Summary: Jet pT and multiplicity distributions in W + jets events
Experiment: CDF
Collider: Tevatron Run 2
SpiresID: 7541902
Status: UNVALIDATED
Authors:
- Ben Cooper <b.d.cooper@qmul.ac.uk>
- Emily Nurse <nurse@hep.ucl.ac.uk>
References:
- arXiv:0711.4044 [hep-ex]
- Phys.Rev.D77:011108,2008
RunInfo:
Requires the process $p\bar{p} \rightarrow {W} \rightarrow {e}\nu$.
Additional hard jets will also have to be included to get a good
description. The LO process in Herwig is set with IPROC=1451.
NumEvents: 1000000
Beams: [p-, p+]
Energies: [1960]
PtCuts: [0]
Description:
Measurement of the cross section for W boson production in association
with jets in $p\bar{p}$ collisions at $\sqrt{s}=1.96$ TeV. The
analysis uses 320 pb$^{-1}$ of data collected with the CDF II
detector. W bosons are identified in their $e\nu$ decay channel and
jets are reconstructed using an $R < 0.4$ cone algorithm. For each $W
+ \geq$ n-jet sample (where n = 1--4) a measurement of
d$\sigma({p}\bar{p} \rightarrow W + \geq$ n jet)/d$E_T(n^{th}$-jet)
$\times$ BR($W \rightarrow{e}\nu$) is made, where d$E_T(n^{th}$-jet)
is the Et of the n$^{th}$-highest Et jet above 20 GeV. A measurement
of the total cross section, $\sigma(p\bar{p} \rightarrow W + \geq$
$n$-jet) $\times$ BR($W \rightarrow{e}\nu)$ with $E_T(n^{th}-jet) > 25$
GeV is also made. Both measurements are made for jets with $|\eta| <
2$ and for a limited region of the $W \rightarrow{e}\nu$ decay phase
space; $|\eta^{e}| < 1.1$, $p_{T}^{e} > 20$ GeV, $p_{T}^{\nu} > 30$
GeV and $M_{T} > 20$ GeV. The cross sections are corrected for all
detector effects and can be directly compared to particle level $W$ +
jet(s) predictions. These measurements can be used to test and tune
QCD predictions for the number of jets in and kinematics of $W$ + jets
events.
NeedCrossSection: yes
BibKey: Aaltonen:2007ip
BibTeX: '@Article{Aaltonen:2007ip,
author = "Aaltonen, T. and others",
collaboration = "CDF",
title = "{Measurement of the cross section for $W^-$ boson
production in association with jets in ppbar collisions at
$\sqrt{s}$ = 1.96-TeV}",
journal = "Phys. Rev.",
volume = "D77",
year = "2008",
pages = "011108",
eprint = "0711.4044",
archivePrefix = "arXiv",
primaryClass = "hep-ex",
doi = "10.1103/PhysRevD.77.011108",
SLACcitation = "%%CITATION = 0711.4044;%%"
}'
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